Gas separation system and gas separation method using same

Abstract

A gas separation system is disclosed. The gas separation system according to an embodiment of the present invention includes: an inlet / outlet flow path unit which receives a gaseous mixed fluid from an external first container and transfers to the outside a recovery fluid and a discharge fluid which are separated from the mixed fluid; a fluid separation unit configured to separate the transferred mixed fluid in a gas phase into the recovery fluid in a gas phase and the discharge fluid in a gas phase; a circulation flow path unit fluidically connected to each of the inlet / outlet flow path unit and the fluid separation unit; and a fluid collection unit fluidically connected to each of the circulation flow path unit and the inlet / outlet flow path unit to receive and collect the separated gaseous recovery fluid.

Description

Gas separation system and gas separation method using the same

[0001] The present invention relates to a gas separation system and a gas separation method using the same, and more particularly, to a gas separation system capable of effectively separating and recovering only a specific fluid from a mixture containing a plurality of fluids, and a gas separation method using the same.

[0002] Gas-insulated switchgear (GIS) is a safety device installed in high-voltage power systems, such as power plants and substations. Under normal operating conditions, GIS switches and disconnects load currents. Furthermore, GIS is installed to protect the power system by switching lines during abnormal conditions, such as fault currents or short-circuit currents.

[0003] Gas-insulated switchgear is equipped with insulating gas. The insulating gas performs an insulating function, thereby improving the operational reliability of the gas-insulated switchgear.

[0004] Traditional gas-insulated switchgear utilizes sulfur hexafluoride (SF6) as the insulating gas. Sulfur hexafluoride is widely used as an insulating gas due to its low cost, excellent insulating properties, high arc extinguishing ability, and rapid insulation recovery.

[0005] However, sulfur hexafluoride is a greenhouse gas that contributes to global warming. With the recent increase in environmental protection interest and regulations, a consensus is forming in developed countries and elsewhere to reduce greenhouse gases, and research is underway to develop an insulating gas that can replace sulfur hexafluoride.

[0006] For example, NOVEC 1230 (C6F) developed by 3M 12O) etc. have been developed and are being used to replace sulfur hexafluoride. However, the insulating gases developed to date require excessive costs to secure insulating performance equivalent to that of sulfur hexafluoride.

[0007] Meanwhile, insulating gas also functions as a consumable. That is, as gas-insulated switchgear continues to operate, the insulating gas must be periodically replaced and recharged. Consequently, the constant supply of expensive insulating gas to gas-insulated switchgear places a significant burden on power grid operators and power consumers.

[0008] Accordingly, technologies for recovering and reusing used insulating gas have been introduced.

[0009] Korean Patent Document No. 10-1086311 discloses a gas filter device for a sulfur hexafluoride gas insulated switchgear. Specifically, the device discloses a gas filter device having a structure capable of removing dust and other contaminants contained in recovered sulfur hexafluoride gas before re-injecting it.

[0010] However, the gas filter device of the sulfur hexafluoride gas-insulated switchgear disclosed in the above-mentioned prior art still assumes that sulfur hexafluoride is used as the insulating gas. In other words, the above-mentioned prior art does not suggest a plan for a material that can be used as an insulating gas to replace sulfur hexafluoride.

[0011] International Patent Publication No. 2015-102229 discloses a method for treating sulfur hexafluoride using radiation, and a byproduct recovery and treatment device. Specifically, the disclosure includes a treatment method and treatment device for irradiating a mixed gas of sulfur hexafluoride and hydrogen to decompose sulfur hexafluoride and hydrogen into hydrogen fluoride and sulfur, and then recovering the resulting product.

[0012] However, the processing method and processing device disclosed in the above-mentioned prior art document only disclose a method for removing sulfur hexafluoride, assuming that it is used as an insulating gas. In other words, the above-mentioned prior art document does not provide a method for recovering an insulating gas composed of a substance other than sulfur hexafluoride.

[0013] Korean Patent No. 10-1086311 (November 23, 2011)

[0014] International Patent Publication No. 2015-102229 (July 9, 2015)

[0015] The present invention is intended to solve the above problems, and an object of the present invention is to provide a gas separation system capable of efficiently separating a fluid to be recovered from a mixed fluid, and a gas separation method using the same.

[0016] Another object of the present invention is to provide a gas separation system and a gas separation method using the same, in which a fluid to be recovered can undergo a separation process multiple times.

[0017] Another object of the present invention is to provide a gas separation system and a gas separation method using the same, which can improve the separation efficiency of a fluid to be recovered.

[0018] Another object of the present invention is to provide a gas separation system capable of efficiently capturing and recovering a fluid to be recovered, and a gas separation method using the same.

[0019] Another object of the present invention is to provide a gas separation system and a gas separation method using the same, in which the remaining fluid to be recovered can undergo a separation process again.

[0020] The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the description below.

[0021] According to one aspect of the present invention, a gas separation system is provided, comprising: an inlet / outlet passage section for receiving a gaseous mixed fluid from an external first container and delivering a recovery fluid and a discharge fluid separated from the mixed fluid to the outside; a fluid separation section configured to separate the delivered gaseous mixed fluid into the gaseous recovery fluid and the gaseous discharge fluid; a circulation passage section fluidly connected to the inlet / outlet passage section and the fluid separation section, respectively; and a fluid collection section fluidly connected to the circulation passage section and the inlet / outlet passage section, respectively, for receiving and collecting the separated gaseous recovery fluid, wherein the inlet / outlet passage section is fluidly connected to the fluid collection section and a second container that accommodates the recovery fluid, and a downstream side of the fluid separation section is positioned higher than an upper side of the fluid collection section, and a lower side of the fluid collection section is positioned higher than the second container, so that the separated recovery fluid flows in a direction from upper to lower and is collected by the fluid collection section and accommodated in the second container.

[0022] At this time, a gas separation system may be provided, including an outlet filter disposed on the inlet / outlet passage section and fluidly connected to the inlet / outlet passage section, configured to separate the gaseous discharge fluid remaining in the phase-transferred recovery fluid flowing toward the container from the fluid collection section, wherein the inlet end of the outlet filter is positioned lower than the lower side of the fluid collection section in the vertical direction, and the outlet end of the outlet filter is positioned higher than the upper side of the second container in the vertical direction.

[0023] In addition, a gas separation system may be provided in which a plurality of fluid separation units are provided, and the plurality of fluid separation units are fluidly connected to each other so that a portion of the mixed fluid in the gas phase that has passed through one of the fluid separation units further passes through another fluid separation unit, and the circulation path section includes a first circulation path fluidly connected to the inlet / outlet path section and one of the fluid separation units, respectively; and a second circulation path extending between a portion and the other portion of the first circulation path and fluidly connected to the other of the fluid separation units, so that the introduced mixed fluid in the gas phase flows along the first circulation path and passes through one of the fluid separation units and is separated into the gas phase recovery fluid and the gas phase residual fluid, and the gas phase residual fluid flows along the second circulation path and passes through the other of the fluid separation units so that the gas phase discharge fluid is further separated and then re-enters the first circulation path.

[0024] At this time, a gas separation system may be provided, wherein the part of the first circulation path is located between the point where the first circulation path is connected to the inlet / outlet passage section and one of the fluid separation sections.

[0025] Additionally, a gas separation system may be provided wherein the second circulation path is fluidly connected to one of the fluid separation units, and the other fluid separation unit is positioned between the portion of the first circulation path and one of the fluid separation units.

[0026] At this time, the fluid collection unit includes a fluid collection cylinder that is fluidly connected to the first circulation path and receives and accommodates the gaseous recovery fluid that has passed through any one of the fluid separation units; and a cooling device that is connected to the fluid collection cylinder and is configured to provide a refrigerant that cools the gaseous recovery fluid so that the gaseous recovery fluid changes into a liquid phase, wherein the fluid collection cylinder extends in a vertical direction, the upper side thereof is positioned below the fluid separation unit, and the lower side thereof is positioned above the second container, wherein a gas separation system can be provided.

[0027] In addition, a gas separation system may be provided in which the circulation path section includes a third circulation path fluidly connected to the fluid collection cylinder and the first circulation path, and the discharged fluid in the gaseous phase that has not undergone a phase change, remaining in the liquid phase recovery fluid contained in the fluid collection cylinder, flows along the third circulation path and re-enters the first circulation path.

[0028] At this time, a gas separation system may be provided in which the inflow / outflow path section includes a recovery fluid outflow path fluidly connected to the fluid collection cylinder and the second container, and the recovery fluid in a phase-changed liquid phase in the fluid collection cylinder flows out to the second container along the recovery fluid outflow path.

[0029] In addition, a gas separation system may be provided, including an outlet filter positioned between the fluid collection cylinder and the second container and configured to separate the gaseous discharge fluid remaining in the liquid-phase recovery fluid by being fluidly connected to the recovery fluid outlet channel, and the inlet / outlet channel section including a separation fluid discharge channel fluidly connected to the outlet filter and forming a channel through which the separated gaseous discharge fluid is discharged to the outside.

[0030] At this time, a gas separation system may be provided, including a flow pump fluidly connected to the separation fluid discharge path and positioned between the outlet filter and the second container, and configured to adjust the flow rate of the recovery fluid in the liquid phase that has passed through the outlet filter.

[0031] In addition, a gas separation system may be provided in which the circulation flow path section includes a fourth circulation flow path fluidically connected to the second container and the first circulation flow path, and the gaseous mixed fluid remaining in the liquid-phase recovery fluid introduced into the second container flows along the fourth circulation flow path and re-enters the first circulation flow path.

[0032] In addition, according to one aspect of the present invention, a gas separation system is provided, including a fluid separation unit configured to receive a gaseous mixed fluid from the outside and separate the delivered gaseous mixed fluid into a gaseous recovery fluid and a gaseous discharge fluid; and a fluid collection unit fluidly connected to the fluid separation unit and receiving and collecting the separated gaseous recovery fluid, wherein a downstream side of the fluid separation unit is positioned higher than an upper side of the fluid collection unit, so that the separated recovery fluid flows in a direction from the upper side to the lower side and is collected in the fluid collection unit.

[0033] In addition, according to one aspect of the present invention, a gas separation system is provided, including a fluid separation unit configured to receive a gaseous mixed fluid from an external first container and separate the delivered gaseous mixed fluid into a gaseous recovery fluid and a gaseous discharge fluid; and a fluid collection unit fluidly connected to the fluid separation unit to receive and collect the separated gaseous recovery fluid, wherein a lower side of the fluid collection unit is positioned higher than a second external container, so that the recovery fluid collected in the fluid collection unit is accommodated in the second container in a direction from upper to lower.

[0034] In addition, according to one aspect of the present invention, there is provided an inlet / outlet passage section for receiving a gaseous mixed fluid from the outside and delivering a recovery fluid and a discharge fluid separated from the gaseous mixed fluid to the outside; a plurality of fluid separation units configured to separate the delivered gaseous mixed fluid into the gaseous recovery fluid and the gaseous discharge fluid; and a circulation passage section fluidly connected to the inlet / outlet passage section and the fluid separation units, respectively, wherein the circulation passage section comprises: a first circulation passage fluidly connected to one of the inlet / outlet passage section and the plurality of fluid separation units; And a second circulation passage extending between a portion and another portion of the first circulation passage and fluidly connected to another one of the plurality of fluid separation units, wherein the introduced gaseous mixed fluid flows along the first circulation passage and passes through one of the fluid separation units, and the gaseous discharge fluid is at least partially separated, and a portion of the gaseous mixed fluid that has passed through one of the fluid separation units flows along the second circulation passage and passes through the other of the fluid separation units, and the gaseous discharge fluid is further separated and then re-enters the first circulation passage.

[0035] At this time, a gas separation system may be provided, wherein the part of the first circulation path is located between the point where the first circulation path is connected to the inlet / outlet passage section and one of the fluid separation sections.

[0036] Additionally, a gas separation system may be provided wherein the second circulation path is fluidly connected to one of the fluid separation units, and the other fluid separation unit is positioned between the portion of the first circulation path and one of the fluid separation units.

[0037] At this time, a gas separation system may be provided, which includes a fluid collection unit that is fluidly connected to the first circulation path, is located downstream of any one of the fluid separation units, and is configured to cool the remainder of the mixed fluid in the gas phase that has passed through any one of the fluid separation units to phase transfer the recovered fluid into a liquid phase and capture it.

[0038] In addition, a gas separation system may be provided, wherein the fluid collection unit includes a fluid collection cylinder fluidly connected to the first circulation path to receive and receive the remainder of the mixed fluid in the gas phase; and a cooling device connected to the fluid collection cylinder and configured to provide a refrigerant that cools the remainder of the mixed fluid in the gas phase so that the recovered fluid in the gas phase is phase-changed into a liquid phase.

[0039] At this time, a gas separation system may be provided in which the circulation path section includes a third circulation path fluidly connected to the fluid collection cylinder and the first circulation path, and a portion of the mixed fluid in the gas phase that has not undergone a phase change, remaining in the liquid phase recovery fluid contained in the fluid collection cylinder, flows along the third circulation path and re-enters the first circulation path.

[0040] In addition, a gas separation system may be provided in which the inlet / outlet flow path includes a recovery fluid flow path fluidly connected to the fluid collection cylinder and an external container, and the recovery fluid in a phase-changed liquid phase in the fluid collection cylinder flows out to the external container along the recovery fluid flow path.

[0041] At this time, a gas separation system may be provided, including an outlet filter positioned between the fluid collection cylinder and the container and configured to separate the gaseous discharge fluid remaining in the liquid-phase recovery fluid by being fluidly connected to the recovery fluid outlet channel, and the inlet / outlet channel section including a separation fluid discharge channel fluidly connected to the outlet filter and forming a channel through which the separated gaseous discharge fluid is discharged to the outside.

[0042] In addition, a gas separation system may be provided in which the circulation flow path section includes a fourth circulation flow path fluidly connected to the container and the first circulation flow path, and the gaseous mixed fluid remaining in the liquid-phase recovery fluid introduced into the container flows along the fourth circulation flow path and re-enters the first circulation flow path.

[0043] In addition, according to one aspect of the present invention, a gas separation system is provided, including a fluid separation unit configured to receive a gaseous mixed fluid from the outside and separate the delivered gaseous mixed fluid into a gaseous recovery fluid and a gaseous exhaust fluid; and a circulation passage unit fluidly connected to the fluid separation unit, wherein the circulation passage unit includes a first circulation passage fluidly connected to the outside and the fluid separation unit, respectively; and a second circulation passage fluidly connected to the fluid separation unit and the first circulation passage, respectively, such that the introduced gaseous mixed fluid flows along the first circulation passage and passes through the fluid separation unit, and the gaseous exhaust fluid is at least partially separated, and a portion of the gaseous mixed fluid that has passed through the fluid separation unit flows along the second circulation passage and passes through the first circulation passage and the fluid separation unit again, and the gaseous exhaust fluid is further separated.

[0044] In addition, according to one aspect of the present invention, a gas separation system is provided, comprising: a plurality of fluid separation units configured to receive a gaseous mixed fluid from the outside and separate the delivered gaseous mixed fluid into a gaseous recovery fluid and a gaseous discharge fluid; and a circulation flow path unit fluidly connected to each of the plurality of fluid separation units, wherein the circulation flow path unit includes: a first circulation flow path fluidly connected to the outside and each of the fluid separation units; and a second circulation flow path extending between the one of the fluid separation units and the first circulation flow path and fluidly connected to the other of the fluid separation units, such that a portion of the introduced gaseous mixed fluid flows along the first circulation flow path past the one of the fluid separation units and flows back into the first circulation flow path, and a remainder of the introduced gaseous mixed fluid flows along the second circulation flow path past the other of the fluid separation units and flows back into the first circulation flow path via the second circulation flow path.

[0045] In addition, according to one aspect of the present invention, a gas separation method is provided, including the steps of (a) introducing a gaseous mixed fluid in which a recovery fluid and a discharge fluid are mixed into an inlet and outlet passage section; (b) a fluid separation section at least partially separating the gaseous recovery fluid from the gaseous mixed fluid; (c) a fluid collection section capturing the gaseous recovery fluid that has passed through the fluid separation section, and the remaining gaseous fluid that has passed through the fluid separation section flows along a circulation passage section and is delivered back to the fluid separation section; and (d) a liquid recovery fluid captured in the fluid collection section is discharged and recovered.

[0046] At this time, a gas separation method may be provided, wherein the step (a) comprises: (a1) a step in which a first container containing the mixed fluid in a gas phase is placed on a balance member; (a2) a step in which an inflow transfer force applying device applies a transfer force to a mixed fluid inflow path; (a3) ​​a step in which the first container is fluidly connected to the mixed fluid inflow path; and (a4) a step in which the mixed fluid in a gas phase is introduced into the mixed fluid inflow path by the transfer force.

[0047] In addition, a gas separation method may be provided, wherein the step (b) comprises: (b1) a step in which the mixed fluid in the gas phase flows along a first circulation path to a first fluid separation unit; and (b2) a step in which the recovered fluid in the gas phase among the mixed fluid in the gas phase passes through the first fluid separation unit, and the residual fluid in the gas phase passes through the first fluid separation unit and is separated.

[0048] At this time, the step (b) includes, prior to the step (b1), a step (b0) in which the flow control module controls at least one of a pressure control member and a flow control member arranged in the first circulation path so that the flow rate and pressure of the mixed fluid in the gas phase are controlled, and the step (b0) includes: (b01) a step in which the flow control module receives information on the pressure and information on the flow rate of the mixed fluid in the gas phase flowing in the first circulation path; (b02) a step in which the flow control module compares preset pressure information with the transmitted information on the pressure and controls the pressure control member so that the pressure is controlled complementarily by the difference; and (b03) a step in which the flow control module compares preset flow rate information with the transmitted information on the flow rate and controls the flow rate control member so that the flow rate is controlled complementarily by the difference.

[0049] In addition, a gas separation method may be provided, wherein the step (b) includes, prior to the step (b2), a step (b2') in which the fluid separation unit control module controls the temperature of the first fluid separation unit, and the step (b2') includes a step (b21') in which the fluid separation unit control module receives information about the temperature of the first fluid separation unit; and a step (b22') in which the fluid separation unit control module compares preset temperature information with the transmitted temperature information and controls a temperature control member provided in the first fluid separation unit so that the temperature is complementarily controlled by the difference.

[0050] At this time, a gas separation method may be provided, wherein the step (c) includes: (c1) a step in which the recovered fluid in the gas phase is captured by a phase transfer in a fluid collection cylinder; and (c2) a step in which the residual fluid in the gas phase flows through the circulation path section and is transferred back to the fluid separation section.

[0051] In addition, a gas separation method may be provided, wherein the step (c1) includes: (c11) a step in which the recovery fluid in the gas phase flows into the fluid collection cylinder; (c12) a step in which a cooling device cools the fluid collection cylinder so that the recovery fluid in the gas phase changes into a liquid phase; and (c13) a step in which the recovery fluid in the liquid phase falls to the lower side of the fluid collection cylinder and is collected.

[0052] At this time, the step (c2) may include a step of: (c21) the residual fluid in the gas phase flows to a second fluid separation unit along a second circulation path; (c22) the recovered fluid in the gas phase among the residual fluid in the gas phase passes through the second fluid separation unit, and the discharged fluid in the gas phase passes through the second fluid separation unit and is separated; (c23) the separated recovered fluid in the gas phase is reintroduced into the first circulation path and delivered back to the first fluid separation unit; and (c24) the discharged fluid in the gas phase flows along the first separated fluid discharge path and is discharged to the outside. A gas separation method may be provided.

[0053] In addition, a gas separation method may be provided, wherein the step (c2) includes, before the step (c22), a step (c22') in which the fluid separation unit control module controls the temperature of the second fluid separation unit, and the step (c22') includes: (c221') a step in which the fluid separation unit control module receives information about the temperature of the second fluid separation unit; and (c222') a step in which the fluid separation unit control module compares preset temperature information with the transmitted temperature information and controls a temperature control member provided in the second fluid separation unit so that the temperature is complementarily controlled by the difference.

[0054] At this time, a gas separation method may be provided, wherein the step (c1) includes a step (c14) in which the gaseous discharge fluid remaining in the gaseous recovery fluid flows along the third circulation path and is re-introduced into the first circulation path and delivered again to the fluid separation unit.

[0055] In addition, a gas separation method may be provided, wherein the step (d) comprises: (d1) a step in which the liquid-phase recovery fluid captured in the fluid collection cylinder flows along a recovery fluid outlet channel; (d2) a step in which the gas-phase discharge fluid remaining in the liquid-phase recovery fluid passes through an outlet filter disposed on the recovery fluid outlet channel and is separated; and (d3) a step in which the liquid-phase recovery fluid flows along the recovery fluid outlet channel and is received in a second container.

[0056] At this time, a gas separation method may be provided, wherein the step (d1) includes: a step of (d11) generating detection information on the height of the water surface of the recovered fluid in the liquid phase captured in the fluid capture cylinder by a water level sensor; and a step of (d12) comparing the generated detection information with preset reference height information by a flow control module.

[0057] In addition, a gas separation method may be provided, wherein the step (d1) includes, after the step (d12), a step (d13) in which the generated detection information is greater than or equal to the reference height information, a step in which the flow control module controls the valve member to open the recovery fluid discharge path; and a step (d14) in which the transfer force application unit control module controls the discharge transfer force application device to operate.

[0058] At this time, a gas separation method may be provided, including: a step (d1) in which, after the step (d12), if the generated detection information (d15) is less than the reference height information, the flow control module controls the valve member to close the recovery fluid outlet path; and a step (d16) in which the transfer force application unit control module controls the discharge transfer force application device to be stopped.

[0059] In addition, the step (d2) may include a step of controlling a flow pump by a transfer force application unit control module so that a flow rate of the liquid-phase recovery fluid is adjusted; (d22) a step of allowing the liquid-phase recovery fluid to flow at a preset flow rate and enter the outlet filter; (d23) a step of allowing the remaining gas-phase discharge fluid to pass through the outlet filter and flow along a second separation fluid discharge path and be discharged to the outside; and (d24) a step of allowing the liquid-phase recovery fluid to pass through the outlet filter and continue to flow along the recovery fluid discharge path.

[0060] At this time, a gas separation method may be provided, wherein the step (d3) includes: (d31) a step in which the liquid-phase recovery fluid is received in the second container; and (d32) a step in which the gas-phase discharge fluid remaining in the liquid-phase recovery fluid flows along the fourth circulation path and is re-introduced into the first circulation path and delivered back to the fluid separation unit.

[0061] According to the above configuration, the gas separation system and the gas separation method using the same according to an embodiment of the present invention can efficiently separate the fluid to be recovered from the mixed fluid.

[0062] In addition, according to the above configuration, the gas separation system and the gas separation method using the same according to an embodiment of the present invention can allow the fluid to be recovered to undergo a separation process multiple times.

[0063] In addition, according to the above configuration, the gas separation system according to an embodiment of the present invention and the gas separation method using the same can improve the separation efficiency of the fluid to be recovered.

[0064] In addition, according to the above configuration, the gas separation system and the gas separation method using the same according to an embodiment of the present invention can efficiently capture and recover the fluid to be recovered.

[0065] In addition, according to the above configuration, the gas separation system and the gas separation method using the same according to an embodiment of the present invention can allow the remaining fluid to be recovered to undergo a separation process again.

[0066] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the composition of the invention described in the claims.

[0067] FIG. 1 is a block diagram illustrating the configuration of a gas separation system according to an embodiment of the present invention.

[0068] Figure 2 is a drawing showing the coupling relationship between the components of the gas separation system of Figure 1.

[0069] Figure 3 is a drawing illustrating various flows formed in the gas separation system of Figure 1.

[0070] Fig. 4 is a perspective view illustrating a first fluid separation unit provided in the gas separation system of Fig. 1.

[0071] Fig. 5 is a perspective view illustrating a second fluid separation unit provided in the gas separation system of Fig. 1.

[0072] Figure 6 is a conceptual diagram illustrating a fluid collection unit provided in the gas separation system of Figure 1.

[0073] Figure 7 is a conceptual diagram showing the height relationship between each component provided in the gas separation system of Figure 1.

[0074] Figure 8 is a front view showing an enclosure housing the gas separation system of Figure 1.

[0075] Figure 9 is a rear view showing the outer case of Figure 8.

[0076] Figure 10 is a side view showing the enclosure of Figure 8.

[0077] Fig. 11 is a flowchart showing the flow of a gas separation method using the gas separation system of Fig. 1.

[0078] Figure 12 is a flowchart showing the detailed flow of step S100 of the gas separation method of Figure 11.

[0079] Figure 13 is a flowchart showing the detailed flow of step S200 of the gas separation method of Figure 11.

[0080] Figure 14 is a flowchart showing the detailed flow of step S210 of the gas separation method of Figure 13.

[0081] Figure 15 is a flowchart showing the detailed flow of step S230 of the gas separation method of Figure 13.

[0082] Figure 16 is a flowchart showing the detailed flow of step S300 of the gas separation method of Figure 11.

[0083] Figure 17 is a flowchart illustrating the detailed flow of step S310 of the gas separation method of Figure 16.

[0084] Figure 18 is a flowchart showing the detailed flow of step S320 of the gas separation method of Figure 16.

[0085] Figure 19 is a flowchart showing the detailed flow of step S322 of the gas separation method of Figure 18.

[0086] Figure 20 is a flowchart illustrating the detailed flow of step S400 of the gas separation method of Figure 11.

[0087] Figure 21 is a flowchart illustrating the detailed flow of step S410 of the gas separation method of Figure 20.

[0088] Figure 22 is a flowchart showing the detailed flow of step S420 of the gas separation method of Figure 20.

[0089] Figure 23 is a flowchart illustrating the detailed flow of step S430 of the gas separation method of Figure 20.

[0090] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily practice the present invention. The present invention may be implemented in various different forms and is not limited to the embodiments described herein. To clearly explain the present invention, parts irrelevant to the description are omitted in the drawings, and the same reference numerals designate identical or similar components throughout the specification.

[0091] The words and terms used in this specification and claims should not be construed as limited to their ordinary or dictionary meanings, but should be interpreted in a way that is consistent with the technical idea of ​​the present invention, in accordance with the principles by which the inventor can define terms and concepts in order to best explain his or her invention.

[0092] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings correspond to a preferred embodiment of the present invention, and do not represent all of the technical ideas of the present invention, so there may be various equivalents and modified examples that can replace the configuration at the time of filing of the present invention.

[0093] In the following description, descriptions of some components may be omitted to clarify the features of the present invention.

[0094]

[0095] The term "fluid communication" as used herein means that one or more elements are fluidly connected to each other. In one embodiment, the fluid communication may be formed by elements such as conduits, pipes, or piping.

[0096] The term "conduction" as used herein refers to one or more elements being connected to each other in a manner that allows the transmission of current or electrical signals. In one embodiment, the conduction may be in the form of a wire, such as through a conductor, or in the form of a wireless connection, such as Bluetooth, Wi-Fi, or RFID.

[0097] The term "fluid" used in the following description refers to a substance in any state that can change shape due to external pressure or temperature, etc. In one embodiment, the fluid may be provided in the form of a liquid or a gas.

[0098] The term "mixed fluid" described below refers to any fluid that is supplied to the gas separation system (10) and subjected to a separation process. In one embodiment, the mixed fluid may be composed of a gaseous fluid discharged from an external device, such as an insulating gas switchgear.

[0099] The term "recovery fluid" used in the following description refers to the fluid mixed in the mixed fluid that is to be captured and recovered. In an embodiment where the mixed fluid is provided as a fluid discharged from an insulating gas switchgear, the recovery fluid may refer to insulating gas. In the above embodiment, the recovery fluid may be C4F7N or C5F10O, etc.

[0100] In the above embodiment, the recovery fluid may be in a gas phase. Alternatively, the recovery fluid may be captured and recovered by changing into a liquid phase.

[0101] The term "discharge fluid" used in the following description refers to the remaining fluid, excluding the recovery fluid, among the fluids mixed in the mixed fluid. In an embodiment where the mixed fluid is provided as a fluid discharged from an insulating gas switchgear, the discharge fluid may be a gaseous fluid excluding the insulating gas, such as oxygen or carbon dioxide.

[0102] The term "residual fluid" used in the following description refers to the remaining fluid from which the recovery fluid has been at least partially separated from the externally provided mixed fluid. The residual fluid may be in a state where some of the recovery fluid remains or in a state where the recovery fluid has been completely removed. In embodiments where the mixed fluid is provided as a fluid discharged from an insulating gas switchgear, the residual fluid may refer to a fluid other than an insulating gas, such as oxygen or hydrogen, or a fluid in which the other fluid and the recovery fluid are mixed.

[0103] The term "permeates the fluid separation unit (300)" used in the following description means a state in which the fluid flows through a membrane, such as a membrane. The discharged fluid is composed of a membrane-permeable material (permeate), such as a membrane, and can be discharged from the fluid separation unit (300) after passing through the membrane provided in the fluid separation unit (300), which will be described later.

[0104] In addition, the term "passes through the fluid separation unit (300)" used in the following description means a state in which the fluid does not pass through the membrane but flows along the membrane. The recovered fluid is composed of a membrane-impermeable material (retentate) such as a membrane, and thus does not pass through the membrane provided in the fluid separation unit (300) described below, but flows along the membrane and can be discharged from the fluid separation unit (300).

[0105] Furthermore, the term "passes through the fluid separation unit (300)" used in the following description may be used to encompass the terms "penetrates through the fluid separation unit (300)" and "passes through the fluid separation unit (300)". That is, the expression that a fluid passes through the fluid separation unit (300) includes both a situation in which the fluid penetrates through the fluid separation unit (300) and a situation in which the fluid passes through the fluid separation unit (300).

[0106]

[0107] Referring to FIGS. 1 to 3, the configuration of a gas separation system (10) according to an embodiment of the present invention and the connection relationship between each component are illustrated as an example. The gas separation system (10) according to the illustrated embodiment can receive a mixed fluid from an external device and separate it into a plurality of fluids. The separated plurality of fluids can be discharged to the outside through different paths. At this time, at least some of the separated plurality of fluids can be discharged to the outside in a gaseous phase, and the other portions can be discharged in a liquid phase.

[0108] Accordingly, one fluid mixed in the mixed fluid can be separated from the other fluid and supplied again to an external device. Accordingly, the recovery efficiency of one fluid mixed in the mixed fluid can be increased, thereby reducing the amount of one fluid that must be newly prepared for supply to the external device.

[0109] Accordingly, the financial costs required to operate external devices can be reduced. Furthermore, as the recovery efficiency of a single fluid is improved, the amount of newly supplied fluid is also reduced, thereby preventing environmental pollution.

[0110] Additionally, the gas separation system (10) according to an embodiment of the present invention may be configured such that the received mixed fluid undergoes at least one separation process before being discharged to the outside. Accordingly, the separation efficiency of the recovered fluid from the mixed fluid can be improved. Furthermore, the purity of the separated recovered fluid can also be increased.

[0111] In addition, the gas separation system (10) according to an embodiment of the present invention can capture the recovered fluid separated from the gaseous mixed fluid by changing its phase into a phase that is easy to capture, for example, a liquid phase. Accordingly, the gas separation system (10) can easily capture and accommodate the recovered fluid that is the target of recovery.

[0112] Furthermore, the gas separation system (10) according to an embodiment of the present invention can re-separate and capture the recovered fluid remaining in the residual fluid from which the recovered fluid has been at least partially separated. Accordingly, the amount of recovered fluid recovered by the gas separation system (10) can be increased.

[0113] Each component of the gas separation system (10) described below is connected to each other, so that at least one of a mixed fluid, a recovery fluid, a discharge fluid, and a residual fluid can flow therein.

[0114] In addition, the power and control signals required for the operation of each component of the gas separation system (10) can be transmitted from an external power source (not shown) and a control unit (800), etc. Each component of the gas separation system (10), particularly the transfer force application unit (600) and utility unit (700) requiring power and control signals, are electrically connected to an external power source (not shown) and a control unit (800).

[0115] In the illustrated embodiment, the gas separation system (10) includes an inlet / outlet flow path section (100), a circulation flow path section (200), a fluid separation section (300), a fluid collection section (400), a filter section (500), a transfer force application section (600), a utility section (700), and a control section (800).

[0116] The inlet / outlet passage (100) is a configuration in which the gas separation system (10) communicates with the outside. Mixed fluid collected from an external device can be supplied to the gas separation system (10) through the inlet / outlet passage (100). In addition, each fluid separated from the mixed fluid by the gas separation system (10) can be discharged or recovered to the outside through the inlet / outlet passage (100).

[0117] In the illustrated embodiment, the inlet / outlet flow path (100) is connected to external containers (C1, C2). The upstream side of the inlet / outlet flow path (100) (i.e., the mixed fluid inlet flow path (110)) is connected to a first container (C1) containing the mixed fluid. A portion of the downstream side of the inlet / outlet flow path (100) (i.e., the recovery fluid outflow flow path (120)) is connected to a second container (C2) containing the recovery fluid. Another portion of the downstream side of the inlet / outlet flow path (100) (i.e., the separated fluid discharge flow path (130)) is open and connected to the outside.

[0118] The inlet / outlet flow path (100) is connected to the circulation flow path (200). The gaseous mixed fluid introduced into the inlet / outlet flow path (100) flows along the circulation flow path (200) and the recovery fluid can be separated. As described below, the mixed fluid introduced through the inlet / outlet flow path (100) can undergo at least one separation process and the recovery fluid can be separated.

[0119] The inlet / outlet flow path (100) may be provided in any form that can be fluidly connected to the external containers (C1, C2) and the circulation flow path (200), respectively. In one embodiment, the inlet / outlet flow path (100) may be provided in the form of a stainless steel pipe, pipe, tube, or the like.

[0120] In the illustrated embodiment, the inlet / outlet flow path (100) includes a mixed fluid inlet flow path (110), a recovery fluid outflow flow path (120), and a separated fluid discharge flow path (130).

[0121] The mixed fluid inlet passage (110) constitutes a portion of the inlet / outlet passage section (100). The mixed fluid inlet passage (110) is a portion where the gas separation system (10) communicates with the outside and receives a gaseous mixed fluid. The mixed fluid inlet passage (110) is fluidly connected to an external first container (C1) that receives the gaseous mixed fluid. In the illustrated embodiment, the upstream end of the mixed fluid inlet passage (110) is fluidly connected to the first container (C1).

[0122] The mixed fluid inlet passage (110) is connected to the circulation passage (200). Specifically, the mixed fluid inlet passage (110) is fluidly connected to the first circulation passage (210), so that the introduced gaseous mixed fluid can flow into the first circulation passage (210). In the illustrated embodiment, the downstream end of the mixed fluid inlet passage (110) is fluidly connected to the first circulation passage (210).

[0123] A flow rate control valve (711) of a utility unit (700) is arranged on the mixed fluid inlet passage (110). The flow rate of each fluid flowing in the mixed fluid inlet passage (110) can be controlled by the flow rate control valve (711). Accordingly, the flow rate of the gaseous mixed fluid flowing into the first circulation passage (210) through the mixed fluid inlet passage (110) can be controlled.

[0124] The recovery fluid outflow path (120) constitutes another part of the inlet / outlet path section (100). The recovery fluid outflow path (120) is a part where the gas separation system (10) is connected to the outside and provides the liquid-phase recovery fluid separated from the mixed fluid to the outside.

[0125] The recovery fluid outlet channel (120) is fluidly connected to a fluid collection cylinder (410) that is configured to change the separated recovery fluid into a liquid phase. The liquid-phase recovery fluid collected in the fluid collection cylinder (410) can be introduced into the recovery fluid outlet channel (120). In the illustrated embodiment, the upstream side of the recovery fluid outlet channel (120) is fluidly connected to the lower side of the fluid collection cylinder (410).

[0126] The recovery fluid outlet channel (120) is fluidly connected to a second container (C2) that receives the recovery fluid. In the illustrated embodiment, the downstream side of the recovery fluid outlet channel (120) is fluidly connected to the second container (C2).

[0127] The recovery fluid outlet passage (120) is fluidly connected to the second separation fluid discharge passage (132). Specifically, the recovery fluid outlet passage (120) is fluidly connected to the second separation fluid discharge passage (132) through an outlet filter (520). Some gaseous discharge fluid remaining in the liquid-phase recovery fluid discharged from the fluid collection cylinder (410) can be filtered by the outlet filter (520) and discharged to the outside through the second separation fluid discharge passage (132).

[0128] A flow pump (640) is placed on the recovery fluid outlet path (120). The flow pump (640) is positioned between the outlet filter (520) and the second container (C2), and can apply a transfer force to the liquid-phase recovery fluid collected in the fluid collection cylinder (410) and simultaneously control the flow rate of the flowing liquid-phase recovery fluid.

[0129] A flow rate control valve (711) of a utility unit (700) is arranged on the recovery fluid discharge path (120). The flow rate of each fluid flowing in the recovery fluid discharge path (120) can be controlled by the flow rate control valve (711). Accordingly, the flow rates of the liquid-phase recovery fluid flowing along the recovery fluid discharge path (120) and the gas-phase discharge fluid remaining therein can be controlled.

[0130] The separation fluid discharge path (130) constitutes the remaining portion of the inlet / outlet passage section (100). The separation fluid discharge path (130) is a portion of the gas separation system (10) that communicates with the outside and discharges the gaseous discharge fluid separated from the mixed fluid to the outside. The separation fluid discharge path (130) communicates with the outside. In the illustrated embodiment, the downstream end of the separation fluid discharge path (130) is open and communicates with the outside. Accordingly, the gaseous discharge fluid can be sprayed into the atmosphere without being separately captured.

[0131] The separation fluid discharge path (130) is connected to the recovery fluid discharge path (120). Specifically, the separation fluid discharge path (130) is connected to the recovery fluid discharge path (120) through an outlet filter (520). The gaseous discharge fluid remaining in the liquid-phase recovery fluid flowing on the recovery fluid discharge path (120) can be filtered by the outlet filter (520) and discharged to the outside through the separation fluid discharge path (130).

[0132] The separated fluid discharge path (130) is connected to the circulation path section (200). The separated gaseous discharge fluid passing through the fluid separation section (300) arranged in the circulation path section (200) can be discharged to the outside through the separated fluid discharge path (130).

[0133] A plurality of separation fluid discharge channels (130) may be provided. The plurality of separation fluid discharge channels (130) may be fluidly connected to the recovery fluid outlet channel (120) and the circulation channel section (200), respectively. In the illustrated embodiment, the separation fluid discharge channel (130) includes a first separation fluid discharge channel (131) and a second separation fluid discharge channel (132).

[0134] The first separated fluid discharge path (131) is fluidly connected to the circulation path (200) and constitutes a discharge path through which the gaseous discharge fluid separated by the fluid separation unit (300) is discharged to the outside. The first separated fluid discharge path (131) is fluidly connected to the second fluid separation unit (320), which is fluidly connected to the second circulation path (220). The gaseous discharge fluid separated while passing through the second fluid separation unit (320) can be discharged to the outside through the first separated fluid discharge path (131).

[0135] In the illustrated embodiment, the upstream end of the first separation fluid discharge channel (131) is fluidly connected to the second fluid separation unit (320), and the downstream end of the first separation fluid discharge channel (131) is formed open.

[0136] A flow control member (740) of a utility unit (700) is positioned on the first separation fluid discharge path (131). The flow control member (740) is configured to control the flow rate of gaseous discharge fluid flowing out along the first separation fluid discharge path (131).

[0137] The second separation fluid discharge path (132) is fluidly connected to the recovery fluid discharge path (120) and constitutes a discharge path through which the gaseous discharge fluid separated by the discharge filter (520) is discharged to the outside. The second separation fluid discharge path (132) is fluidly connected to the recovery fluid discharge path (120) through the discharge filter (520). The gaseous discharge fluid separated by passing through the discharge filter (520) can be discharged to the outside through the second separation fluid discharge path (132).

[0138] In the illustrated embodiment, the upstream end of the second separation fluid discharge channel (132) is fluidly connected to the outlet filter (520), and the downstream end of the second separation fluid discharge channel (132) is formed open.

[0139] A discharge transfer force application device (630) may be placed on the second separation fluid discharge path (132). The discharge transfer force application device (630) provides a transfer force for the gaseous discharge fluid to be discharged to the outside along the second separation fluid discharge path (132).

[0140] A flow rate control valve (711) may be arranged on the second separation fluid discharge path (132). The flow rate of the gaseous discharge fluid flowing along the second separation fluid discharge path (132) may be controlled by the flow rate control valve (711).

[0141] The circulation flow path (200) constitutes a flow path through which the introduced gaseous mixed fluid, the separated gaseous recovered fluid, and the residual gaseous fluid from which the gaseous recovered fluid is at least partially separated flow. The gaseous mixed fluid introduced through the inlet / outlet flow path (100) can be transferred to and flow through the circulation flow path (200). In addition, the gaseous recovered fluid and the residual gaseous fluid separated from the gaseous mixed fluid can flow along the circulation flow path (200).

[0142] The circulation flow path (200) is fluidly connected to the inlet and outlet flow paths (100). Specifically, the circulation flow path (200) is fluidly connected to the mixed fluid inlet flow path (110) so as to receive the gaseous mixed fluid provided from the first container (C1). In addition, the circulation flow path (200) is fluidly connected to the recovery fluid outflow flow path (120) so as to transmit the gaseous recovered fluid separated from the gaseous mixed fluid.

[0143] The circulation flow path (200) is fluidly connected to the fluid separation unit (300). The gaseous mixed fluid flowing in the circulation flow path (200) passes through the fluid separation unit (300) and can be separated into gaseous recovery fluid and gaseous residual fluid. The separated gaseous recovery fluid and gaseous residual fluid can flow again in the circulation flow path (200).

[0144] The circulation flow path (200) is fluidly connected to the fluid collection unit (400). The gaseous recovery fluid flowing in the circulation flow path (200) can be transferred to the fluid collection unit (400). As will be described later, the gaseous recovery fluid can be phase-changed into a liquid phase by the fluid collection unit (400).

[0145] The circulation flow path (200) is fluidly connected to the filter section (500). Specifically, an inflow filter (510) is arranged in one component (i.e., the first circulation flow path (210)) that is fluidly connected to the mixed fluid inflow path (110) among the components of the circulation flow path (200), so that particulate matter remaining in the mixed fluid phase of the inflowing gas can be removed.

[0146] A flow control valve (711) is arranged on the circulation flow path (200). The flow rate of each fluid flowing in the circulation flow path (200) can be controlled by the flow control valve (711). A check valve (713) is arranged on the circulation flow path (200). The flow direction of each fluid flowing in the circulation flow path (200) can be controlled by the check valve (713).

[0147] The circulation flow path (200) may include a plurality of components. Each component included in the circulation flow path (200) may constitute a flow path through which a gaseous mixed fluid, a gaseous recovered fluid separated from the gaseous mixed fluid, and a gaseous residual fluid flow.

[0148] At this time, each of the above components is fluidly connected to each other, so that the mixed fluid in the gas phase and the residual fluid in the gas phase are circulated and flowed along the circulation path section (200), and the recovered fluid in the gas phase can be separated multiple times by the fluid separation section (300) and the filter section (500).

[0149] In the illustrated embodiment, the circulation flow path (200) includes a first circulation flow path (210), a second circulation flow path (220), a third circulation flow path (230), and a fourth circulation flow path (240).

[0150] The first circulation path (210) constitutes a portion of the circulation path section (200). The first circulation path (210) is fluidly connected to the mixed fluid inlet path (110) and can receive the gaseous mixed fluid provided from the first container (C1). A first fluid separator (310) is positioned on the first circulation path (210), so that the gaseous mixed fluid can pass through the first fluid separator (310) and be separated into a gaseous recovery fluid and a gaseous residual fluid.

[0151] The first circulation flow path (210) is fluidly connected to the mixed fluid inlet flow path (110). In the embodiments illustrated in FIGS. 2 and 3, the flow path connecting the first container (C1) and one of the flow control valves (711) positioned most adjacent to the first container (C1) may be defined as the mixed fluid inlet flow path (110). In the above embodiment, the first circulation flow path (210) may extend from one of the flow control valves (711).

[0152] The first circulation path (210) is fluidly connected to the second circulation path (220). Specifically, the first circulation path (210) is fluidly connected to the second circulation path (220) through the first fluid separator (310).

[0153] The residual gaseous fluid separated from the gaseous mixed fluid by passing through the first fluid separation unit (310) may flow along the second circulation path (220) and enter the second fluid separation unit (320). In addition, the residual gaseous fluid (i.e., the gaseous discharge fluid further separated) that has passed through the second fluid separation unit (320) may enter the first circulation path (210) again.

[0154] Accordingly, a portion of the gaseous mixed fluid flowing along the first circulation path (210) passes through the first fluid separation unit (310) and the second fluid separation unit (320), and the gaseous recovery fluid can be separated multiple times.

[0155] The first circulation path (210) is fluidly connected to the third circulation path (230). Specifically, the first circulation path (210) is fluidly connected to the third circulation path (230) through a fluid collection cylinder (410).

[0156] The gaseous recovery fluid separated through the first fluid separation unit (310) flows into the fluid collection cylinder (410). At this time, some residual gaseous fluid may remain in the gaseous recovery fluid flowing into the fluid collection cylinder (410).

[0157] As will be described later, the fluid collection cylinder (410) can change the recovered fluid from a gaseous phase to a liquid phase by cooling or compressing it. At this time, the remaining fluid remains in a gaseous phase and can flow along the third circulation path (230) and re-enter the first circulation path (210).

[0158] Accordingly, another portion of the gaseous mixed fluid flowing along the first circulation path (210) passes through the first fluid separation unit (310) and the second fluid separation unit (320) again, and the gaseous recovery fluid can be separated multiple times.

[0159] The first circulation path (210) is fluidly connected to the fourth circulation path (240). The gaseous residual fluid remaining in the liquid-phase recovery fluid introduced into the external second container (C2) can flow along the fourth circulation path (240) and re-enter the first circulation path (210). In the illustrated embodiment, the upstream side of the first circulation path (210) is fluidly connected to the downstream side of the mixed fluid inlet path (110), the downstream side of the third circulation path (230), and the downstream side of the fourth circulation path (240), respectively.

[0160] The first circulation path (210) is fluidly connected to the first fluid separation unit (310). The gaseous mixed fluid flowing along the first circulation path (210) must pass through the first fluid separation unit (310) and then flow to the fluid collection cylinder (410) or the second fluid separation unit (320).

[0161] The first circulation path (210) is fluidly connected to the fluid collection cylinder (410). The gaseous recovery fluid separated by passing through the first fluid separation unit (310) can flow further through the first circulation path (210) and be introduced into the fluid collection cylinder (410).

[0162] An inlet filter (510) is arranged on the first circulation path (210). The gaseous mixed fluid introduced along the mixed fluid inlet path (110) passes through the inlet filter (510) and particulate matter is removed, after which it can flow along the first circulation path (210). In the illustrated embodiment, the inlet filter (510) is arranged adjacent to the upstream end of the first circulation path (210).

[0163] The first circulation path (210) is fluidly connected to the inflow transfer force applying device (610). The gaseous mixed fluid introduced from the mixed fluid inflow path (110) can flow along the first circulation path (210) by the transfer force applied by the inflow transfer force applying device (610). In addition, the remaining gaseous fluid that has passed through the second to fourth circulation paths (220, 230, 240) can also flow back to the first fluid separation unit (310) along the first circulation path (210) by the transfer force applied by the inflow transfer force applying device (610).

[0164] A plurality of flow control valves (711) are arranged on the first circulation path (210). The plurality of flow control valves (711) can be configured to control the flow rate of each fluid in the gas phase flowing in the first circulation path (210).

[0165] A check valve (713) is arranged on the first circulation path (210). The check valve (713) can restrict the flow direction of each gaseous fluid flowing along the first circulation path (210). Therefore, each gaseous fluid flowing on the first circulation path (210) can only proceed in a direction from the upstream side to the downstream side of the first circulation path (210).

[0166] A pressure regulating member (730) is arranged on the first circulation path (210). The pressure of the gaseous mixed fluid and the gaseous residual fluid flowing in the first circulation path (210) can be regulated by the pressure regulating member (730).

[0167] A flow control member (740) is arranged on the first circulation path (210). The flow rates of the gaseous mixed fluid and the gaseous residual fluid flowing in the first circulation path (210) can be controlled by the flow control member (740).

[0168] The second circulation path (220) constitutes another part of the circulation path section (200). The second circulation path (220) is fluidically connected to the first circulation path (210) at a plurality of points, and constitutes a path through which the gaseous mixed fluid or the gaseous residual fluid flowing in the first circulation path (210) is re-introduced into the first circulation path (210) and circulated toward the first fluid separation unit (310).

[0169] The upstream end of the second circulation path (220) is fluidly connected to the first fluid separation unit (310). The gaseous mixed fluid flowing in the first circulation path (210) passes through the first fluid separation unit (310) and a portion of it is separated into a gaseous residual fluid. The separated gaseous residual fluid can enter the second circulation path (220).

[0170] A second fluid separation unit (320) is arranged on the second circulation path (220). The second circulation path (220) is fluidically connected to the second fluid separation unit (320). The remaining gaseous fluid separated by passing through the first fluid separation unit (310) flows along the second circulation path (220) and then enters the second fluid separation unit (320), where the separation process of the gaseous discharged fluid can be performed again.

[0171] The downstream end of the second circulation path (220) is fluidly connected to the first circulation path (210). At this time, the point where the downstream end of the second circulation path (220) is fluidly connected to the first circulation path (210) may be upstream of the first fluid separation unit (310). Accordingly, the remaining gaseous fluid that passes through the second fluid separation unit (320) and is separated again may flow into the first circulation path (210) and pass through the first fluid separation unit (310) again.

[0172] In another embodiment, the downstream end of the second circulation path (220) may be fluidly connected to the upstream end of the inflow transfer force applying device (610) among the portions of the first circulation path (210). In this embodiment, the remaining gaseous fluid passing through the second circulation path (220) may be more effectively flowed into the first circulation path (210) by the transfer force applied by the inflow transfer force applying device (610).

[0173] That is, the downstream end of the second circulation path (220) can be fluidly connected to any point located on the upstream side of the first fluid separation unit (310) among the parts of the first circulation path (210).

[0174] The second circulation path (220) is fluidly connected to the first separation fluid discharge path (131) through the second fluid separation unit (320). The separated gaseous discharge fluid passing through the second fluid separation unit (320) can be discharged to the outside of the gas separation system (10) through the first separation fluid discharge path (131).

[0175] The second circulation path (220) is fluidly connected to the circulation transfer force application device (620). The remaining gaseous fluid separated in the first fluid separation unit (310) can flow along the second circulation path (220) by the transfer force applied by the circulation transfer force application device (620) and be introduced into the second fluid separation unit (320).

[0176] A plurality of flow rate control valves (711) are arranged on the second circulation path (220). Each of the plurality of flow rate control valves (711) can be configured to control the flow rate of the remaining fluid in the gas phase flowing in the second circulation path (220).

[0177] A check valve (713) is arranged on the second circulation path (220). The check valve (713) can limit the flow direction of each fluid in the gas phase flowing along the second circulation path (220).

[0178] A pressure regulating member (730) is arranged on the second circulation path (220). The pressure of the remaining fluid in the gas phase flowing in the second circulation path (220) can be regulated by the pressure regulating member (730).

[0179] The third circulation path (230) constitutes another part of the circulation path section (200). The third circulation path (230) is fluidly connected to the first circulation path (210) at a plurality of points, and constitutes a path through which the remaining fluid in the gas phase that has flowed through the first circulation path (210) is circulated again by flowing into the first circulation path (210).

[0180] The upstream end of the third circulation path (230) is fluidly connected to the fluid collection cylinder (410). The residual gaseous fluid mixed with the separated gaseous recovery fluid passing through the first fluid separation unit (310) can be introduced into the third circulation path (230). As described above, the residual gaseous fluid can be easily separated as the gaseous recovery fluid is liquefied.

[0181] The downstream end of the third circulation passage (230) is fluidly connected to the upstream end of the first circulation passage (210). The remaining gaseous fluid flowing along the third circulation passage (230) can be re-introduced into the first circulation passage (210).

[0182] A plurality of flow rate control valves (711) are arranged on the third circulation path (230). Each of the plurality of flow rate control valves (711) can be configured to control the flow rate of the remaining fluid in the gas phase flowing in the third circulation path (230).

[0183] A check valve (713) is arranged on the third circulation path (230). The check valve (713) can limit the flow direction of each fluid in the gas phase flowing along the third circulation path (230).

[0184] A flow control member (740) is arranged on the third circulation path (230). The flow rate of the remaining fluid in the gas phase flowing in the third circulation path (230) can be controlled by the flow control member (740).

[0185] The fourth circulation path (240) constitutes the remainder of the circulation path section (200). The fourth circulation path (240) is fluidly connected to the second container (C2) containing the liquid-phase recovery fluid and the first circulation path (210), respectively, so as to constitute a path through which the gaseous residual fluid remaining in the liquid-phase recovery fluid contained in the second container (C2) is circulated back into the first circulation path (210).

[0186] The upstream end of the fourth circulation channel (240) is fluidly connected to a second container (C2) that receives the liquid-phase recovery fluid. The remaining gaseous fluid received in the second container (C2) can be introduced into the fourth circulation channel (240).

[0187] The downstream end of the fourth circulation passage (240) is fluidly connected to the upstream end of the first circulation passage (210). The remaining gaseous fluid flowing along the fourth circulation passage (240) can be re-introduced into the first circulation passage (210).

[0188] A plurality of flow rate control valves (711) are arranged on the fourth circulation path (240). Each of the plurality of flow rate control valves (711) can be configured to control the flow rate of the remaining fluid in the gas phase flowing in the fourth circulation path (240).

[0189] A check valve (713) is arranged on the fourth circulation path (240). The check valve (713) can limit the flow direction of each fluid in the gas phase flowing along the fourth circulation path (240).

[0190] Accordingly, the gaseous mixed fluid introduced through the mixed fluid inlet path (110) can circulate along the first to fourth circulation paths (210, 220, 230, 240) and pass through the fluid separation unit (300) multiple times. Accordingly, the process of separating the gaseous recovery fluid from the gaseous mixed fluid can also be performed multiple times, thereby improving the separation efficiency of the liquid recovery fluid.

[0191] A detailed description of the process in which the introduced gaseous mixed fluid circulates along the circulation path (200) and the gaseous recovery fluid is separated multiple times will be described later.

[0192] The fluid separation unit (300) substantially performs the function of separating the gaseous mixed fluid or the gaseous residual fluid into the gaseous recovery fluid and the gaseous discharge fluid. The fluid separation unit (300) is disposed on the circulation flow path unit (200) and is in communication with the circulation flow path unit (200). The gaseous mixed fluid and the gaseous residual fluid flowing in the circulation flow path unit (200) pass through the fluid separation unit (300) and can be separated into the gaseous recovery fluid and the gaseous discharge fluid (or the gaseous residual fluid).

[0193] The fluid separation unit (300) is fluidically connected to the mixed fluid inlet passage (110) through the circulation passage (200). The gaseous mixed fluid introduced through the mixed fluid inlet passage (110) can be introduced into the fluid separation unit (300).

[0194] The fluid separation unit (300) is connected to the circulation flow path unit (200). Specifically, the fluid separation unit (300) is configured to separate the gaseous recovery fluid from the introduced gaseous mixed fluid or gaseous residual fluid by being connected and coupled to the first circulation flow path (210) or the second circulation flow path (220).

[0195] The fluid separation unit (300) is fluidly connected to the recovery fluid outlet channel (120) through the fluid collection unit (400). The gaseous recovery fluid separated while passing through the fluid separation unit (300) is captured by changing into a liquid phase in the fluid collection unit (400) and can then be discharged to the second container (C2) through the recovery fluid outlet channel (120).

[0196] The fluid separation unit (300) is fluidly connected to the separation fluid discharge passage (130). The gaseous discharge fluid separated while passing through the fluid separation unit (300) can be discharged to the outside through the separation fluid discharge passage (130).

[0197] The fluid separation unit (300) may be configured in any form capable of separating a plurality of gaseous fluids having different physical and chemical properties. In one embodiment, the fluid separation unit (300) may be provided in the form of a membrane filter including a plurality of hollow fibers.

[0198] In the above embodiment, the gas phase recovery fluid among the gas phase mixed fluids introduced into the fluid separation unit (300) can flow in the longitudinal direction without passing through the membrane and be discharged from the fluid separation unit (300). The discharged gas phase recovery fluid is transferred to the fluid collection unit (400).

[0199] Additionally, among the mixed fluids in the gas phase, the gas phase discharge fluid can pass through the membrane and flow in a radial direction and be discharged. The discharged gas phase discharge fluid can be introduced into another fluid separation unit (300) or discharged to the outside.

[0200] In one embodiment, the hollow fiber may be manufactured from a super engineering plastic such as polysulfone or polyimide. In this case, the hollow fiber may be manufactured through a spinning process.

[0201] In the above embodiment, the membrane constituting the fluid separation unit (300) can be designed to have various permeabilities and selectivities for various gaseous fluids.

[0202] At this time, the fluid flowing into each fluid separation unit (300) may be limited to a gas phase. In an embodiment in which the fluid separation unit (300) is configured to include a membrane, there is a concern that if a liquid phase fluid flows in, the membrane may become wet, thereby reducing the separation efficiency of the gas phase fluid.

[0203] A plurality of fluid separation units (300) may be provided. Each of the plurality of fluid separation units (300) may be connected and communicated with a different circulation flow path unit (200). In addition, the mixed fluid in the gas phase or the residual fluid in the gas phase may sequentially pass through the plurality of fluid separation units (300), and the separation process of the gas phase recovery fluid may be performed multiple times.

[0204] In the illustrated embodiment, the fluid separation unit (300) includes a first fluid separation unit (310), a second fluid separation unit (320), a thermal insulation jacket (330), a temperature control member (340), and a temperature sensing member (350).

[0205] The first fluid separation unit (310) is connected to and communicates with the first circulation path (210). The first fluid separation unit (310) is configured to receive the gaseous mixed fluid or the gaseous residual fluid that has flowed into the first circulation path (210) and separate the gaseous recovery fluid and the gaseous discharge fluid therefrom. The gaseous mixed fluid that has flowed into the gas separation system (10) can be separated into the gaseous recovery fluid and the gaseous discharge fluid by the first fluid separation unit (310) at least once.

[0206] The first fluid separation unit (310) is positioned on the first circulation path (210). At this time, the first fluid separation unit (310) may be positioned between the fluid collection cylinder (410) positioned at the downstream end of the first circulation path (210) and a portion where the first circulation path (210) and the second circulation path (220) are connected.

[0207] Accordingly, the remaining gaseous fluid that flows back into the first circulation path (210) through the second circulation path (220) can pass through the first fluid separator (310) again and be separated into gaseous recovery fluid and gaseous discharge fluid.

[0208] The first fluid separation unit (310) is fluidically connected to the second circulation path (220). The remaining gaseous fluid separated while passing through the first fluid separation unit (310) flows out to the second circulation path (220) and can then flow into the second fluid separation unit (320).

[0209] In an embodiment in which the first fluid separation unit (310) is provided in the form of a membrane, the first fluid separation unit (310) may include a plurality of membranes. In the illustrated embodiment, the first fluid separation unit (310) is composed of two membranes, including a first separation membrane (311) and a second separation membrane (312). Alternatively, the first fluid separation unit (310) may be composed of three or more membranes.

[0210] The first and second separation membranes (311, 312) are fluidly connected to the first circulation path (210) and the second circulation path (220), respectively. The first and second separation membranes (311, 312) can receive the gaseous mixed fluid or the gaseous residual fluid flowing along the first circulation path (210) and separate the gaseous recovery fluid. The gaseous residual fluid separated by the first and second separation membranes (311, 312) can be transferred to the second circulation path (220).

[0211] The first and second separation membranes (311, 312) can be fluidly connected to the first circulation path (210) and the second circulation path (220) in parallel. Therefore, the gaseous mixed fluid or the gaseous residual fluid flowing along the first circulation path (210) can be divided and introduced into the first and second separation membranes (311, 312). In addition, the gaseous separated recovery fluid and the gaseous residual fluid in the first and second separation membranes (311, 312) can flow out into the first circulation path (210) and the second circulation path (220), respectively.

[0212] The first and second separation membranes (311, 312) are fluidly connected to the first circulation path (210) and the second circulation path (220), respectively, and may have any shape capable of separating the gaseous recovery fluid from the gaseous mixed fluid. In the embodiment illustrated in FIG. 4, the first and second separation membranes (311, 312) are cylindrical in shape, having a diameter of a first diameter (d1) and a length of a first length (l1).

[0213] The second fluid separation unit (320) is connected to and communicates with the second circulation path (220). The second fluid separation unit (320) is configured to receive the gaseous residual fluid that has flowed into the second circulation path (220) and separate the gaseous recovery fluid and the gaseous discharge fluid therefrom. The gaseous residual fluid that has flowed into the second circulation path (220) passes through the second fluid separation unit (320), and after the gaseous discharge fluid is separated again, it can flow along the first circulation path (210) again and flow into the first fluid separation unit (310).

[0214] The second fluid separation unit (320) is positioned on the second circulation path (220). At this time, the second fluid separation unit (320) may be positioned between the first fluid separation unit (310) located at the upstream end of the second circulation path (220) and the part where the first circulation path (210) and the second circulation path (220) are connected.

[0215] Accordingly, the residual gaseous fluid that has passed through the first fluid separation unit (310) can be introduced into the second fluid separation unit (320). In addition, the residual gaseous fluid separated in the second fluid separation unit (320) (i.e., the gaseous discharge fluid from which the gaseous discharge fluid has been removed again) can be introduced back into the first circulation path (210).

[0216] In an embodiment in which the second fluid separation unit (320) is provided in the form of a membrane, the second fluid separation unit (320) may include a plurality of membranes. In the illustrated embodiment, the second fluid separation unit (320) is composed of two membranes, including a third separation membrane (321) and a fourth separation membrane (322). Alternatively, the second fluid separation unit (320) may be composed of three or more membranes.

[0217] The third and fourth separation membranes (321, 322) are each fluidly connected to the second circulation path (220). The third and fourth separation membranes (321, 322) can receive the mixed fluid in the gas phase or the residual fluid in the gas phase flowing along the second circulation path (220) and separate the fluid in the recovered gas phase. The residual fluid in the gas phase separated by the third and fourth separation membranes (321, 322) can be transferred to the second circulation path (220).

[0218] The third and fourth separation membranes (321, 322) can be fluidly connected to the second circulation path (220) in parallel. Therefore, the remaining gaseous fluid flowing along the second circulation path (220) can be divided and introduced into the third and fourth separation membranes (321, 322). In addition, the gaseous recovery fluid and the remaining gaseous fluid separated in the third and fourth separation membranes (321, 322) can each flow out into the second circulation path (220).

[0219] The third and fourth separation membranes (321, 322) are each fluidly connected to the first separation fluid discharge path (131). The gaseous discharge fluid separated from the third and fourth separation membranes (321, 322) can flow along the first separation fluid discharge path (131) and be discharged to the outside of the gas separation system (10).

[0220] The third and fourth separation membranes (321, 322) are fluidly connected to the second circulation path (220) and the first separation fluid discharge path (131), respectively, and may have any shape capable of re-separating the gaseous recovery fluid from the gaseous mixed fluid that has passed through the first fluid separation unit (310). In the embodiment illustrated in FIG. 5, the third and fourth separation membranes (321, 322) are cylindrical in shape, having a diameter of the second diameter (d2) and a length of the second length (l2).

[0221] In the above embodiment, the second diameter (d2) may be less than or equal to the first diameter (d1), and the second length (l2) may be less than or equal to the first length (l1). This is because the gaseous mixed fluid delivered to the second fluid separation unit (320) passes through the first fluid separation unit (310) at least once, and the gaseous recovery fluid is separated at least once, so a separation ability as high as that of the first fluid separation unit (310) is not required.

[0222] Of course, it will be understood that when the second diameter (d2) is formed to be the same as the first diameter (d1) and the second length (l2) is also formed to be the same as the first length (l1), the separation effect of the gaseous recovery fluid or the gaseous discharge fluid from the gaseous mixed fluid can be maximized.

[0223] Meanwhile, since the first fluid separation unit (310) and the second fluid separation unit (320) are each configured to include a plurality of separation membranes (311, 312, 321, 322), the contact area and time of the mixed fluid in the gas phase or the residual fluid in the gas phase with the first and second fluid separation units (310, 320) can be controlled.

[0224] That is, if the time for the gaseous mixed fluid to pass through the first and second fluid separation units (310, 320) is excessive, some of the gaseous mixed fluid may liquefy and wet the separation membrane (311, 312, 321, 322), which may lower the separation efficiency.

[0225] Accordingly, the gas separation system (10) according to an embodiment of the present invention comprises first and second fluid separation units (310, 320) each composed of a plurality of separation membranes (311, 312, 321, 322). Accordingly, while maintaining the flow rate of the gaseous mixed fluid passing through the first and second fluid separation units (310, 320), the contact area and time can be controlled to prevent the separation membranes (311, 312, 321, 322) from being wetted by the liquid mixed fluid or the residual fluid in the liquid phase.

[0226] Meanwhile, the upstream side of the fluid separation unit (300) may be defined as one side from which the gaseous mixed fluid, the gaseous residual fluid, the gaseous discharge fluid, or the gaseous recovery fluid flows in. The downstream side of the fluid separation unit (300) may be defined as the other side from which the gaseous mixed fluid, the gaseous residual fluid, the gaseous discharge fluid, or the gaseous recovery fluid flows out.

[0227] That is, the upstream side of the first fluid separation unit (310) may be defined as the side where the gaseous mixed fluid, gaseous residual fluid, gaseous discharge fluid, or gaseous recovery fluid flowing through the first circulation path (210) flows in, or the right side in the embodiments shown in FIGS. 2 and 3. The downstream side of the first fluid separation unit (310) may be defined as the other side where the gaseous recovery fluid passing through the first fluid separation unit (310) is discharged, or the left side in the embodiments shown in FIGS. 2 and 3.

[0228] Likewise, the upstream side of the second fluid separation unit (320) can be defined as the side into which the residual fluid in the gas phase flowing through the second circulation path (220) flows, i.e., the right side in the embodiments shown in FIGS. 2 and 3.

[0229] The downstream side of the second fluid separation unit (320) can be defined as the other side from which the gaseous recovery fluid passing through the second fluid separation unit (320) is discharged, the right side in the embodiments shown in FIGS. 2 and 3.

[0230] The thermal insulation jacket (330) is configured to thermally insulate each of the separation membranes (311, 312, 321, 322) constituting the first fluid separation unit (310) and the second fluid separation unit (320) from the outside. By the thermal insulation jacket (330), liquefaction due to pressure change of the gaseous mixed fluid flowing into the first and second separation membranes (311, 312) can be minimized. Accordingly, the first to fourth separation membranes (311, 312, 321, 322) can be prevented from wetting, and thus the separation efficiency of the gaseous mixed fluid can be maintained.

[0231] The thermal insulation jacket (330) surrounds the outer surfaces of the first to fourth separation membranes (311, 312, 321, 322). In the illustrated embodiment, the first to fourth separation membranes (311, 312, 321, 322) are each formed in a cylindrical shape with a circular cross-section and a height in one direction. In the above embodiment, the thermal insulation jacket (330) can surround the outer surfaces of the first to fourth separation membranes (311, 312, 321, 322).

[0232] The thermal insulation jacket (330) may be provided in any form that can thermally insulate the first to fourth separation membranes (311, 312, 321, 322) from the outside. In one embodiment, the thermal insulation jacket (330) may be provided in the form of Styrofoam, thermal insulation tape, ceramic paper, or the like.

[0233] The temperature control member (340) is configured to control the temperature of the first and second fluid separation units (310, 320). The temperature control member (340) may be positioned between the outer periphery of the first to fourth separation membranes (311, 312, 321, 322) and the thermal insulation jacket (330). In one embodiment, the temperature control member (340) may be arranged to at least partially surround the outer periphery of the first to fourth separation membranes (311, 312, 321, 322).

[0234] The temperature control member (340) is electrically connected to the fluid separation unit control module (830) of the control unit (800). The temperature control member (340) is operated by a control signal applied by the fluid separation unit control module (830), and can control the temperatures of the first to fourth separation membranes (311, 312, 321, 322), respectively.

[0235] The temperature control member (340) may be provided in any form that can control the temperature of the first to fourth separation membranes (311, 312, 321, 322) by cooling or heating the first and second fluid separation units (310, 320).

[0236] In one embodiment, the temperature control member (340) is provided in the form of a tube through which a heat medium for cooling or heating can flow, and can at least partially surround the outer periphery of the first to fourth separation membranes (311, 312, 321, 322). In the above embodiment, the temperature control member (340) can be fluidly connected to an external heat medium supply source (not shown).

[0237] In another embodiment, the temperature control member (340) may be configured to include a means for cooling and a means for heating, respectively. In the above embodiment, the temperature control member (340) may be configured to include both a heating wire for heating and a pipe through which a refrigerant for cooling flows.

[0238] In any case, it is sufficient if the temperature control member (340) is positioned between the outer circumference of the first to fourth separation membranes (311, 312, 321, 322) and the heat insulating jacket (330) so as to be configured to control the temperature of the first to fourth separation membranes (311, 312, 321, 322).

[0239] The temperature sensing member (350) is configured to sense the temperature of the first to fourth separation membranes (311, 312, 321, 322). The temperature sensing member (350) is positioned between the outer circumference of the first to fourth separation membranes (311, 312, 321, 322) and the thermal insulation jacket (330). The temperature sensing member (350) can sense the temperature of the first to fourth separation membranes (311, 312, 321, 322) controlled by the temperature control member (340).

[0240] The temperature sensing member (350) may be provided in any form capable of sensing the temperature of the first to fourth separation membranes (311, 312, 321, 322). In one embodiment, the temperature sensing member (350) may be provided as a thermocouple temperature sensor, RTD, thermistor, infrared thermometer, bimetal, etc.

[0241] The temperature sensing member (350) is electrically connected to the fluid separation unit control module (830). Information about the temperatures of the first to fourth separation membranes (311, 312, 321, 322) detected by the temperature sensing member (350) is transmitted to the fluid separation unit control module (830) and can be utilized to control the temperature control member (340). A detailed description of the above process will be provided later.

[0242] The temperature control member (340) and temperature sensing member (350) described above may be provided in multiple numbers, and may be provided in each of the multiple separation membranes (311, 312, 321, 322). Accordingly, it will be understood that the temperatures of the multiple separation membranes (311, 312, 321, 322) can be independently detected and controlled.

[0243] The fluid collection unit (400) receives the gaseous recovery fluid separated from the fluid separation unit (300). The fluid collection unit (400) can cool the received gaseous recovery fluid to change its phase into a liquid phase. Accordingly, the fluid collection unit (400) can easily capture the phase-changed liquid recovery fluid.

[0244] For this purpose, the fluid collection unit (400) may be positioned downstream of the fluid separation unit (300). Specifically, as illustrated in FIGS. 2 and 3, the fluid collection unit (400) is positioned downstream of the fluid separation unit (300) with respect to the first circulation flow (FC1) formed along the first circulation path (210).

[0245] The fluid collection unit (400) is fluidically connected to the inlet / outlet passage unit (100). The gaseous recovery fluid collected in the fluid collection unit (400) can flow along the inlet / outlet passage unit (100) and be accommodated in the second container (C2).

[0246] The fluid collection unit (400) is fluidically connected to the circulation flow unit (200). The recovered gaseous fluid that passes through the fluid separation unit (300) can be delivered to the fluid collection unit (400).

[0247] In the illustrated embodiment, the fluid collection unit (400) includes a fluid collection cylinder (410), a cooling device (420), and a refrigerant passage (430).

[0248] The fluid collection cylinder (410) receives and collects the recovered fluid in the separated gas phase. The fluid collection cylinder (410) is fluidly connected to the first circulation path (210) and can receive the recovered fluid in the gas phase separated by the fluid separation unit (300). In one embodiment, the fluid collection cylinder (410) can be fluidly connected to the first circulation path (210) on one side in the height direction, that is, on the upper side in the illustrated embodiment.

[0249] The fluid collection cylinder (410) can transfer the recovered liquid phase that has been phase-changed to the second container (C2). For this purpose, the fluid collection cylinder (410) can be fluidly connected to the recovery fluid outlet channel (120). In one embodiment, the fluid collection cylinder (410) can be fluidly connected to the recovery fluid outlet channel (120) on the other side in the height direction, that is, on the lower side in the illustrated embodiment.

[0250] As described above, the fluid collection unit (400) can capture the gaseous recovery fluid by changing its phase into a liquid phase. Accordingly, the gaseous recovery fluid introduced into the upper portion of the fluid collection cylinder (410) can be phase changed into a liquid phase, fall, and be captured at the lower portion. Consequently, the separated gaseous recovery fluid can easily be introduced into the fluid collection cylinder (410), captured, and discharged into the second container (C2).

[0251] The fluid collection cylinder (410) is fluidly connected to the third circulation path (230). The gaseous recovery fluid flowing into the fluid collection cylinder (410) may include some residual gaseous fluid. When the introduced gaseous recovery fluid is cooled or compressed and changes into a liquid phase, the liquid recovery fluid may fall, but the residual fluid may remain in the gaseous phase. The remaining gaseous residual fluid may flow into the third circulation path (230) and flow again along the first circulation path (210).

[0252] In the above embodiment, the fluid collection cylinder (410) can be fluidly connected to the third circulation passage (230) on one side in the height direction, i.e., on the upper side in the illustrated embodiment. Accordingly, the remaining fluid in the gas phase with a relatively low density can be easily discharged into the third circulation passage (230).

[0253] In the illustrated embodiment, the fluid collection cylinder (410) includes a level indicator (411), a pressure sensor (412) and a level sensor (413).

[0254] The level indicator (411) is fluidly connected to the fluid collection cylinder (410). The level indicator (411) is formed to have a height in the same direction as the fluid collection cylinder (410). In the illustrated embodiment, the level indicator (411) extends in the vertical direction, so that its upper and lower sides are fluidly connected to the fluid collection cylinder (410), respectively.

[0255] Accordingly, the pressure formed inside the fluid collection cylinder (410) and the pressure formed inside the level indicator (411) become the same. As a result, the fluid height (ph) of the fluid collection cylinder (410) and the fluid height (ph) of the level indicator (411) can be formed to be the same.

[0256] Accordingly, the operator can easily recognize information about the amount of recovery fluid captured in the fluid collection cylinder (410), i.e., the water level of the liquid-phase recovery fluid liquefied and contained in the fluid collection cylinder (410), through the water level indicator (411).

[0257] For this purpose, the water level indicator (411) is formed of a transparent material so that the user can easily check the water level of the liquid-phase recovery fluid formed on the water level indicator (411) with the naked eye.

[0258] The pressure sensor (412) is configured to detect the pressure inside the fluid collection cylinder (410). Information about the pressure detected by the pressure sensor (412) can be transmitted to and output from the main control panel (810) of the control unit (800).

[0259] The water level sensor (413) is configured to detect the height of the water surface formed by the liquid-phase recovery fluid collected in the fluid collection cylinder (410), i.e., the water level. The water level sensor (413) is electrically connected to the transfer force application unit control module (840) and can transmit information about the detected water level. As will be described later, the transfer force application unit control module (840) can control the discharge transfer force application device (630) in accordance with the information about the detected water level.

[0260] Referring to FIG. 6, a coupling structure of a fluid collection cylinder (410) and another configuration is illustrated as an example.

[0261] In the illustrated embodiment, the fluid collection cylinder (410) is formed to have a circular cross-section and a vertical height. In the above embodiment, the upper side of the fluid collection cylinder (410) is fluidly connected to the first circulation path (210) and the third circulation path (230), respectively. In addition, the lower side of the fluid collection cylinder (410) is fluidly connected to the recovery fluid discharge path (120).

[0262] The gaseous recovery fluid (or gaseous residual fluid) that has passed through the fluid separation unit (300) and has been at least partially separated from the discharged fluid can be introduced into the upper portion of the fluid collection cylinder (410) along the first circulation path (210).

[0263] As described above, the gaseous recovery fluid introduced into the fluid collection cylinder (410) is cooled or compressed and changes into a liquid phase. Accordingly, the liquid-phase recovery fluid falls due to the density difference and is collected at the lower side of the fluid collection cylinder (410). The liquid-phase recovery fluid collected at the lower side can flow out of the fluid collection cylinder (410) into the recovery fluid discharge path (120) due to its own weight. At this time, the flow rate of the liquid-phase recovery fluid flowing out can be maintained constant by the flow pump (640).

[0264] On the other hand, the discharged fluid in the gas phase that has not undergone a phase change is relatively located at the upper side of the fluid collection cylinder (410) due to the difference in density. This discharged fluid in the gas phase can flow back to the first circulation passage (210) through the third circulation passage (230) that is fluidly connected to the upper side of the fluid collection cylinder (410).

[0265] Accordingly, it will be understood that the position at which the fluid collection cylinder (410) is fluidically connected to other configurations, i.e., the first circulation path (210), the third circulation path (230) and the recovery fluid outlet path (120), can be determined depending on the phase of the fluid to flow in the paths (210, 230, 120).

[0266] The cooling device (420) provides a refrigerant for cooling the gaseous recovery fluid introduced into the fluid collection cylinder (410). The cooling device (420) is connected to the fluid collection cylinder (410) through a refrigerant passage (430). In one embodiment, the refrigerant delivered from the cooling device (420) may flow in a tube (not shown) configured to surround the outer periphery of the fluid collection cylinder (410).

[0267] Additionally, the cooling device (420) provides a refrigerant for cooling the gaseous recovery fluid contained in the second container (C2). The cooling device (420) is connected to the second container (C2) through a refrigerant conduit (430). In one embodiment, the refrigerant delivered from the cooling device (420) may flow in a tube (not shown) configured to surround the outer periphery of the second container (C2).

[0268] The cooling device (420) may be provided in any form capable of providing a refrigerant for heat exchange with the gaseous or liquid phase recovery fluid introduced into the fluid collection cylinder (410) or the second container (C2). In one embodiment, the cooling device (420) may be provided in the form of a chiller.

[0269] The cooling device (420) can be electrically connected to an external power source (not shown) and a control unit (800), respectively. The cooling device (420) can receive power and control signals required for operation from the external power source (not shown) and the control unit (800).

[0270] The refrigerant passage (430) fluidly connects the cooling device (420) to the fluid collection cylinder (410) and the second container (C2). The refrigerant passage (430) constitutes a passage for delivering the refrigerant provided from the cooling device (420) to the fluid collection cylinder (410) and the second container (C2). In addition, the refrigerant passage (430) constitutes a passage for returning the refrigerant that has exchanged heat with the recovery fluid back to the cooling device (420).

[0271] In the illustrated embodiment, the refrigerant passage (430) includes a refrigerant inlet passage (431) and a refrigerant outlet passage (432).

[0272] The refrigerant inlet passage (431) constitutes a passage through which the refrigerant provided from the cooling device (420) flows to the fluid collection cylinder (410) and the second container (C2). The refrigerant inlet passage (431) fluidly connects the cooling device (420) to the fluid collection cylinder (410) and the second container (C2).

[0273] The refrigerant inlet passage (431) may include a branching point. One portion of the branched refrigerant inlet passage (431) is connected to the fluid collection cylinder (410). Another portion of the branched refrigerant inlet passage (431) is fluidly connected to the second container (C2).

[0274] A flow control valve (711) is arranged on the refrigerant inlet passage (431). The flow control valve (711) may be configured to control the flow rate of the refrigerant flowing in the refrigerant inlet passage (431). At this time, the flow control valve (711) may be positioned between the point where the refrigerant inlet passage (431) branches and the cooling device (420).

[0275] The refrigerant outflow path (432) constitutes a path through which the refrigerant heat-exchanged with the recovery fluid contained in the fluid collection cylinder (410) and the second container (C2) returns to the cooling device (420). The refrigerant outflow path (432) fluidly connects the cooling device (420) with the fluid collection cylinder (410) and the second container (C2).

[0276] The refrigerant outlet passage (432) may include a branching point. One portion of the branched refrigerant outlet passage (432) is connected to the fluid collection cylinder (410). Another portion of the branched refrigerant outlet passage (432) is fluidly connected to the second container (C2).

[0277] A flow control valve (711) is arranged on the refrigerant outlet passage (432). The flow control valve (711) may be configured to control the flow rate of the refrigerant flowing in the refrigerant outlet passage (432). The flow control valve (711) may be positioned between the point where the refrigerant outlet passage (432) branches and the cooling device (420).

[0278] The filter unit (500) is configured to remove particulate matter remaining in the introduced mixed fluid. In addition, the filter unit (500) is configured to separate the discharged fluid remaining in the recovered fluid captured in the fluid collection cylinder (410). The filter unit (500) is fluidically connected to the inlet / outlet passage unit (100) and the circulation passage unit (200), respectively.

[0279] The filter unit (500) may include a plurality of components. Some of the plurality of components may be configured to remove particulate matter remaining in the incoming mixed fluid. Others of the plurality of components may be configured to separate the discharge fluid remaining in the captured recovery fluid.

[0280] In the illustrated embodiment, the filter unit (500) includes an inlet filter (510) and an outlet filter (520).

[0281] The inlet filter (510) is configured to remove particulate matter remaining in the introduced gaseous mixed fluid. The introduced gaseous mixed fluid may be introduced into the fluid separation unit (300) after passing through the inlet filter (510).

[0282] The inlet filter (510) may be provided in any form capable of removing particulate matter remaining in the gaseous mixed fluid flowing into the fluid separation unit (300). In one embodiment, the inlet filter (510) may be provided in the form of a particle filter.

[0283] The inlet filter (510) can be positioned at any location where the gaseous mixed fluid can be introduced into the fluid separation unit (300) after the remaining particulate matter has been removed. In the illustrated embodiment, the inlet filter (510) is positioned between the mixed fluid inlet path (110) and the fluid separation unit (300).

[0284] The effluent filter (520) is configured to separate the gaseous exhaust fluid remaining in the liquid-phase recovery fluid captured in the fluid collection unit (400). The liquid-phase recovery fluid captured in the fluid collection unit (400) can be accommodated in the second container (C2) after passing through the effluent filter (520).

[0285] The effluent filter (520) may be provided in any form capable of separating the gaseous exhaust fluid remaining in the liquid phase recovery fluid. In one embodiment, the effluent filter (520) may be provided in the form of a reverse osmosis (RO) membrane filter.

[0286] The effluent filter (520) may be positioned at any location capable of separating the gaseous exhaust fluid remaining in the liquid phase recovery fluid. In the illustrated embodiment, the effluent filter (520) is positioned between the fluid collection cylinder (410) and the second container (C2).

[0287] At this time, the discharge filter (520) may be positioned lower than the other side, i.e., the lower side, in the height direction of the fluid collection cylinder (410). Accordingly, the liquid-phase recovery fluid collected in the fluid collection cylinder (410) may be dropped by its own weight without a separate transfer force and transferred to the discharge filter (520).

[0288] Meanwhile, the effluent filter (520) receives the recovery fluid from the fluid collection cylinder (410), separates the gaseous discharge fluid therefrom, and then discharges the gaseous discharge fluid to the outside and delivers the liquid-phase recovery fluid to the second container (C2). To this end, the effluent filter (520) is fluidically connected to the fluid collection cylinder (410), the outside, and the second container (C2), respectively.

[0289] Specifically, the outflow filter (520) is in communication with the recovery fluid outflow path (120) and can be fluidly connected to the fluid collection cylinder (410) and the second container (C2), respectively. In addition, the outflow filter (520) is in communication with the second separation fluid discharge path (132) and can be fluidly connected to the outside.

[0290] Accordingly, the liquid-phase recovery fluid captured in the fluid collection unit (400) can be accommodated in the second container (C2) after the gaseous discharge fluid is further separated by the discharge filter (520). Accordingly, the purity of the liquid-phase recovery fluid accommodated in the second container (C2) can be improved.

[0291] The transfer force application unit (600) provides a transfer force for fluid to flow in the gas separation system (10). In particular, the transfer force application unit (600) may be configured to provide a transfer force to a gaseous mixed fluid, a gaseous residual fluid, or a gaseous discharge fluid. In addition, the transfer force application unit (600) may be configured to provide a transfer force to a liquid-phase recovery fluid.

[0292] The conveying force application unit (600) is connected to the inlet / outlet flow path unit (100) and the circulation flow path unit (200), respectively. The conveying force provided by the conveying force application unit (600) can be transmitted to the fluid flowing in the inlet / outlet flow path unit (100) or the circulation flow path unit (200).

[0293] The conveying force applying unit (600) may be provided in any form capable of providing conveying force to the fluid. In one embodiment, the conveying force applying unit (600) may be provided in the form of a pump or a compressor.

[0294] The transfer force application unit (600) is electrically connected to an external power source (not shown) and a control unit (800). The power and control signals required for the operation of the transfer force application unit (600) can be transmitted from the external power source (not shown) and the control unit (800).

[0295] A plurality of conveying force applying units (600) may be provided. The plurality of conveying force applying units (600) may be connected and communicated with the inlet / outlet flow path (100) or the circulation flow path (200) at different locations, respectively. The plurality of conveying force applying units (600) may provide conveying force to the fluid flowing in the inlet / outlet flow path (100) or the circulation flow path (200), respectively.

[0296] In the illustrated embodiment, the transfer force application unit (600) includes an inlet transfer force application device (610), a circulation transfer force application device (620), an outlet transfer force application device (630), and a flow pump (640).

[0297] The inflow transfer force application device (610) is coupled and communicated with the first circulation path (210) to provide a transfer force for the gaseous mixed fluid to be introduced. In addition, the inflow transfer force application device (610) provides a transfer force for the gaseous residual fluid introduced from the third circulation path (230) and the fourth circulation path (240) to be introduced back into the first circulation path (210).

[0298] The inflow transfer force application device (610) can be positioned at any location capable of providing a transfer force for the gaseous mixed fluid or the gaseous residual fluid to be introduced into the first circulation passage (210). In the illustrated embodiment, the inflow transfer force application device (610) is positioned adjacent to the upstream end of the first circulation passage (210). In this case, the inflow transfer force application device (610) can be positioned downstream from the point where the third circulation passage (230) and the fourth circulation passage (240) are fluidly connected to the first circulation passage (210).

[0299] As described above, in the embodiment in which the second circulation path (220) is connected to the first circulation path (210) on the upstream side of the inflow transfer force applying device (610), the inflow transfer force applying device (610) can also apply a transfer force to the remaining gaseous fluid flowing in the second circulation path (220). In the embodiment, the check valve (713) provided in the second circulation path (220) is opened by the applied transfer force, so that the remaining gaseous fluid flowing in the second circulation path (220) can flow more quickly to the first circulation path (210).

[0300] The circulation transfer force application device (620) is connected and connected to the second circulation path (220) to provide a transfer force for the gaseous residual fluid that has passed through the first fluid separation unit (310) to flow toward the second fluid separation unit (320). In addition, the circulation transfer force application device (620) provides a transfer force for the gaseous discharge fluid separated in the second fluid separation unit (320) to flow along the first separation fluid discharge path (131) and be discharged to the outside.

[0301] The circulating transfer force application device (620) can be positioned at any location capable of providing a transfer force to the residual fluid in the gas phase or the exhaust fluid in the gas phase. In the illustrated embodiment, the circulating transfer force application device (620) is positioned between the first fluid separation unit (310) and the second fluid separation unit (320).

[0302] The discharge transfer force application device (630) is coupled and communicated with the second separation fluid discharge path (132) to provide a transfer force for the gaseous discharge fluid separated from the discharge filter (520) to be discharged to the outside. In addition, the discharge transfer force application device (630) can apply a transfer force to the liquid-phase recovery fluid contained in the fluid collection cylinder (410). When the discharge transfer force application device (630) is operated, the liquid-phase recovery fluid collected in the fluid collection cylinder (410) can be discharged to the recovery fluid discharge path (120).

[0303] The exhaust transfer force application device (630) may be positioned at any location capable of providing a transfer force to the exhaust fluid in the gas phase. In the illustrated embodiment, the exhaust transfer force application device (630) is positioned between the downstream end of the second separation fluid discharge path (132) and the outlet filter (520).

[0304] The flow pump (640) is configured to limit the flow rate of the liquid phase recovery fluid collected in the fluid collection cylinder (410) and discharged. By the flow pump (640), the flow rate of the liquid phase recovery fluid discharged from the fluid collection cylinder (410) is maintained constant, so that the flow rate of the liquid phase recovery fluid flowing into the discharge filter (520) can also be maintained constant.

[0305] Accordingly, a situation in which the liquid phase recovery fluid is introduced into the discharge filter (520) at an excessive flow rate, thereby reducing the separation efficiency of the gas phase discharge fluid, can be prevented.

[0306] The flow pump (640) may be provided in any form capable of limiting the flow rate of the liquid-phase recovery fluid flowing out of the fluid collection cylinder (410). In one embodiment, the flow pump (640) may be provided in the form of a fan having a plurality of blades, thereby limiting the flow rate of the liquid-phase recovery fluid in the form of a waterwheel.

[0307] The flow pump (640) is electrically connected to the transfer force application unit control module (840) of the control unit (800). The flow pump (640) is controlled by the transfer force application unit control module (840), so that the flow rate of the liquid-phase recovery fluid flowing out of the fluid collection cylinder (410) can be adjusted.

[0308] The flow pump (640) is positioned on the recovery fluid outlet channel (120) and is fluidly connected to the recovery fluid outlet channel (120). At this time, the flow pump (640) may be positioned between the outlet filter (520) and the second container (C2).

[0309] The utility unit (700) is configured to control the flow of fluid flowing in the inlet / outlet passage unit (100) or the circulation passage unit (200). In addition, the utility unit (700) can detect information on the state of the fluid flowing in the inlet / outlet passage unit (100) or the circulation passage unit (200). Furthermore, the utility unit (700) can detect information on the mass of the gaseous mixed fluid contained in the first container (C1) or the liquid recovered fluid contained in the second container (C2).

[0310] The utility unit (700) can be electrically connected to an external power source (not shown) and a control unit (800). Power and control signals required for the operation of the utility unit (700) can be transmitted from the external power source (not shown) and the control unit (800). In addition, information detected by the utility unit (700) can be transmitted to the external control unit (800).

[0311] In the illustrated embodiment, the utility unit (700) includes a valve member (710), a scale member (720), a pressure regulating member (730), and a flow regulating member (740).

[0312] The valve member (710) is disposed on the inlet / outlet passage section (100) or the circulation passage section (200). The valve member (710) is configured to control the flow of fluid in the inlet / outlet passage section (100) or the circulation passage section (200). In one embodiment, the valve member (710) can control the flow rate or flow direction of the fluid.

[0313] To this end, in the illustrated embodiment, the valve member (710) includes a flow control valve (711) and a check valve (713).

[0314] The flow control valve (711) is arranged on the inlet / outlet flow path section (100) or the circulation flow path section (200) and is configured to control the flow rate of the fluid.

[0315] The flow control valve (711) may be provided in any form that can control the flow rate of the fluid flowing in the inlet / outlet passage section (100) or the circulation passage section (200). In one embodiment, the flow control valve (711) may be provided in the form of a needle valve.

[0316] A plurality of flow control valves (711) may be provided. The plurality of flow control valves (711) are arranged at different locations to control the flow rate of each fluid flowing in the inlet / outlet flow path section (100) or the circulation flow path section (200).

[0317] A check valve (713) is arranged on the circulation flow path (200) and is configured to limit the flow direction of the fluid.

[0318] A plurality of check valves (713) may be provided. The plurality of check valves (713) may be arranged at different locations to restrict the flow direction of the fluid flowing in the circulation path section (200). In the illustrated embodiment, the check valves (713) are arranged in each of the first to fourth circulation paths (210, 220, 230, 240).

[0319] Accordingly, it will be understood that each check valve (713) restricts the direction of flow of the fluid so that the fluid flows back into the first fluid separation unit (310) along the first circulation path (210).

[0320] The scale member (720) is configured to detect the mass of each fluid contained in the first and second containers (C1, C2) and the first and second containers (C1, C2). Based on the mass detected by the scale member (720), the remaining amount of the combined fluid in the mixed gas phase to be supplied and the amount of the recovered fluid in the collected liquid phase can be determined.

[0321] The scale member (720) may be provided in any form capable of detecting the mass of the first and second containers (C1, C2) and the mass of each fluid contained in the first and second containers (C1, C2). In one embodiment, the scale member (720) may be provided in the form of an electronic scale. In the above embodiment, the scale member (720) may be electrically connected to an external power source (not shown) and a control unit (800). Information about the mass detected by the scale member (720) may be transmitted to the control unit (800).

[0322] A plurality of scale members (720) may be provided. The plurality of scale members (720) may be configured to detect the mass of a gaseous mixed fluid and a first container (C1) containing the mixed fluid and the mass of a liquid recovery fluid and a second container (C2) containing the mixed fluid.

[0323] In the illustrated embodiment, the scale member (720) includes an inlet scale member (721) and an outlet scale member (722).

[0324] The inflow balance member (721) detects the mass of the mixed fluid in the gas phase contained in the first container (C1) and the mixed fluid inflow path (110). The outflow balance member (722) detects the mass of the mixed fluid in the liquid phase contained in the second container (C2) and the mixed fluid inflow path (110).

[0325] A pressure regulating member (730) is arranged on the circulation flow path (200) and is configured to regulate the pressure of the flowing fluid. The pressure of the fluid can be regulated by the pressure regulating member (730).

[0326] A plurality of pressure regulating members (730) may be provided. The plurality of pressure regulating members (730) are arranged at different locations, and can each regulate the pressure of the fluid. In the illustrated embodiment, one pressure regulating member (730) is provided in the first circulation path (210) and one is provided in the second circulation path (220).

[0327] A pressure regulating member (730) disposed in the first circulation path (210) may be positioned adjacent to the upstream side of the first circulation path (210). The pressure regulating member (730) may regulate the pressure of the gaseous mixed fluid and the gaseous residual fluid flowing into the first circulation path (210). In one embodiment, the pressure of the gaseous fluids may be lowered from 7 bar to 3 bar by the pressure regulating member (730).

[0328] A pressure regulating member (730) disposed in the second circulation path (220) may be positioned adjacent to the downstream side of the second circulation path (220). The pressure regulating member (730) may regulate the pressure of the gaseous residual fluid to be introduced from the second circulation path (220) into the first circulation path (210). In one embodiment, the pressure of the gaseous residual fluid may be maintained at 3 bar by the pressure regulating member (730).

[0329] The pressure regulating member (730) is electrically connected to the flow control module (850) of the control unit (800). The pressure regulating member (730) is controlled by the flow control module (850), so that the pressure of the gaseous fluid passing through the pressure regulating member (730) can be regulated.

[0330] The flow control member (740) is configured to control the flow rate of the gaseous mixed fluid or the gaseous residual fluid flowing in the circulation flow path (200). The flow rate of the fluid can be controlled by the flow control member (740).

[0331] A plurality of flow control members (740) may be provided. The plurality of flow control members (740) are arranged at different locations, and can each control the flow rate of the fluid. In the illustrated embodiment, one flow control member (740) is provided in the first circulation path (210), one in the second circulation path (220), one in the third circulation path (230), and one in the first separated fluid discharge path (131).

[0332] The flow control member (740) provided in the first circulation path (210) may be positioned between the point where the first circulation path (210) is fluidly connected to the second circulation path (220) and the first fluid separation unit (310). The flow control member (740) provided in the second circulation path (220) may be positioned between the first fluid separation unit (310) and the second fluid separation unit (320).

[0333] Additionally, the flow control member (740) provided in the third circulation path (230) may be positioned between the point where the third circulation path (230) is fluidly connected to the first circulation path (210) and the fluid collection cylinder (410). The flow control member (740) provided in the first separation fluid discharge path (131) may be positioned on the downstream side of the second fluid separation unit (320).

[0334] The flow control member (740) is electrically connected to the flow control module (850) of the control unit (800). The flow control member (740) is controlled by the flow control module (850), so that the flow rate of the gaseous fluid flowing through the flow control member (740) can be controlled.

[0335] The control unit (800) applies a control signal to control the configuration of the gas separation system (10). The control unit (800) can be electrically connected to an external terminal (not shown) to receive the control signal. Alternatively, the control unit (800) may be configured to include a separate component for receiving a control signal from an operator.

[0336] The control unit (800) may be provided in any form capable of inputting, calculating, and outputting information. In one embodiment, the control unit (800) may be configured to include a configuration for calculating, such as a CPU or microprocessor, a configuration for communicating, such as an input / output port or wireless communication module, a configuration for inputting information, such as a button, a touch screen, or a touch panel, and a configuration for outputting information, such as a speaker or a screen.

[0337] The control unit (800) is electrically connected to the fluid separation unit (300), the fluid collection unit (400), the transfer force application unit (600), and the utility unit (700), respectively. The control unit (800) calculates control signals for controlling the fluid separation unit (300), the fluid collection unit (400), the transfer force application unit (600), and the utility unit (700), and can control them in accordance with the calculated control signals.

[0338] In the illustrated embodiment, the control unit (800) includes a main control panel (810), a sub-control panel (820), a fluid separation unit control module (830), a transfer force application unit control module (840), and a flow control module (850). Each of the above-described panels (810, 820) and each of the modules (830, 840, 850) can be electrically connected to each other.

[0339] The main control panel (810) receives control information for controlling the fluid separation unit (300), the fluid collection unit (400), the transfer force application unit (600), and the utility unit (700). In addition, the main control panel (810) can output the operating status or detected information of the fluid separation unit (300), the fluid collection unit (400), the transfer force application unit (600), and the utility unit (700). The main control panel (810) is electrically connected to the fluid separation unit (300), the fluid collection unit (400), the transfer force application unit (600), and the utility unit (700).

[0340] The sub-control panel (820) receives a control signal for controlling the cooling device (420). The sub-control panel (820) can control the cooling device (420) according to the input control signal. In addition, the sub-control panel (820) can output information on the operating status of the cooling device (420). The sub-control panel (820) is electrically connected to the cooling device (420).

[0341] The fluid separation unit control module (830) is electrically connected to the fluid separation unit (300). The fluid separation unit control module (830) can receive information detected by the temperature sensing member (350), i.e., information about the temperature of each separation membrane (311, 312, 321, 322).

[0342] Additionally, the fluid separation unit control module (830) can calculate control information for controlling the temperature control member (340) in accordance with the received temperature. The fluid separation unit control module (830) can control the temperature control member (340) in accordance with the calculated control information.

[0343] In one embodiment, the fluid separation unit control module (830) can control the temperature control member (340) in accordance with control information input through the main control panel (810). In the above embodiment, the fluid separation unit control module (830) can compare the input control information, i.e., the preset temperature, with the detected temperature, and calculate a control signal for controlling the temperature control member (340) based on the result.

[0344] The conveying force application unit control module (840) is electrically connected to the conveying force application unit (600). The conveying force application unit control module (840) can calculate control information for controlling each component of the conveying force application unit (600), i.e., the inlet conveying force application device (610), the circulation conveying force application device (620), the discharge conveying force application device (630), and the flow pump (640). In addition, the conveying force application unit control module (840) can control each component of the conveying force application unit (600) in accordance with the calculated control information.

[0345] In one embodiment, the transfer force application unit control module (840) can control the discharge transfer force application device (630) using information about the level of the liquid-phase recovery fluid detected by the level sensor (413). That is, when the information about the detected water level is higher than the preset water level information, the transfer force application unit control module (840) controls the discharge transfer force application device (630) to operate so that the liquid-phase recovery fluid captured in the fluid collection cylinder (410) can flow.

[0346] The flow control module (850) is electrically connected to the utility unit (700) and configured to control the flow of fluid formed in the gas separation system (10). The flow control module (850) is electrically connected to the valve member (710), the scale member (720), the pressure control member (730), and the flow control member (740) of the utility unit (700).

[0347] The flow control module (850) can control the utility unit (700) in accordance with a preset pressure value or flow rate value.

[0348] In particular, the flow control module (850) can control the pressure regulating member (730) to maintain the pressure of the gaseous mixed fluid or the gaseous residual fluid flowing in the circulation flow path (200) corresponding to a preset pressure value.

[0349] In addition, the flow control module (850) can control the flow control member (740) to maintain the flow rate of the gaseous mixed fluid or the gaseous residual fluid flowing in the circulation flow path (200) corresponding to a preset flow rate value.

[0350] At this time, the preset pressure value and the preset flow rate value can be set to any value that can maximize the separation efficiency in the fluid separation unit (300).

[0351] Referring to FIG. 7, the height difference between each component of the above-described gas separation system (10) is illustrated as an example. In the illustrated embodiment, the portion indicated as (datum) is a reference line and may be the ground or the lower surface of the outer case (20).

[0352] First, the first height (h1), which is the height of the first fluid separation unit (310) and the second fluid separation unit (320) of the fluid separation unit (300), is formed to be the largest compared to other configurations. That is, the first fluid separation unit (310) and the second fluid separation unit (320) are positioned at the highest level compared to other configurations of the gas separation system (10).

[0353] This means that when the first fluid separation unit (310) and the second fluid separation unit (320) are positioned lower than other configurations, the gaseous recovery fluid separated by the first and second fluid separation units (310, 320) must flow along the upwardly extending flow path to other configurations.

[0354] In this case, the gaseous recovery fluid may accumulate in the section where the flow path is bent due to the density difference, and liquefaction may proceed. In the above case, the gaseous recovery fluid separated in the first and second fluid separation units (310, 320) may accumulate, reducing the separation efficiency and adversely affecting the circulation of fluid within the gas separation system (10).

[0355] Therefore, the gas separation system (10) according to an embodiment of the present invention places the first and second fluid separation units (310, 320) at the uppermost side, so that the recovered fluid of the separated gas can flow downward, i.e., in the direction of gravity.

[0356] To this end, the height of the downstream side of the first and second fluid separation units (310, 320), i.e., the portion from which the gaseous recovery fluid flows out, may be positioned higher than the fluid collection cylinder (410) that captures and phase-changes the gaseous recovery fluid and the second container (C2) that receives the phase-changed recovery fluid.

[0357] In addition, the second height (h2), which is the height on the upstream side of the fluid collection cylinder (410), is formed to be less than or equal to the first height (h1), but greater than or equal to the third height (h3), which is the height on the downstream side of the fluid collection cylinder (410). Accordingly, the gaseous recovery fluid (or gaseous residual fluid) that has passed through the fluid separation unit (300) can flow into the fluid collection cylinder (410) in a direction from the upper side to the lower side.

[0358] In addition, as described above, the fluid capture cylinder (410) can be extended in the vertical direction. Accordingly, the gaseous recovery fluid introduced into the upstream side of the fluid capture cylinder (410) undergoes a phase change and flows downstream, where it can be captured in the fluid capture cylinder (410).

[0359] In addition, the third height (h3), which is the height on the downstream side of the fluid collection cylinder (410), may be greater than the fourth height (h4), which is the height on the upstream side of the outlet filter (520), the fifth height (h5), which is the height on the downstream side, and the sixth height (h6), which is the height of the second container (C2). The fourth height (h4), which is the height of the upstream side of the outlet filter (520), i.e., the inlet end, is formed to be less than or equal to the third height (h3), which is the height on the downstream side of the fluid collection cylinder (410). Therefore, the liquid-phase recovery fluid collected in the fluid collection cylinder (410) can flow from the upper side to the lower side to the outlet filter (520).

[0360] The fifth height (h5), which is the height of the downstream side of the outlet filter (520), i.e., the outlet end, may be greater than or equal to the sixth height (h6), which is the height of the upper side of the second container (C2). Accordingly, the liquid-phase recovery fluid that has passed through the outlet filter (520) can be received in the second container (C2) in a direction from the upper side to the lower side.

[0361] Meanwhile, the seventh height (h7), which is the height of the transfer force application unit (600), may be formed to be lower than the first to sixth heights (h1, h2, h3, h4, h5, h6). Accordingly, the transfer force application unit (600) is positioned lower than the upper side of the fluid separation unit (300), the discharge filter (520), and the second container (C2).

[0362] This is because the fluid separation unit (300) may be affected by vibrations generated when the transfer force application unit (600) is operated. In addition, the gaseous mixed fluid flowing into the fluid separation unit (300) and the gaseous recovered fluid or gaseous residual fluid flowing out have low densities, so it may be more advantageous to suction them from the lower side.

[0363] Therefore, the recovery fluid in the gaseous or liquid phase can flow from the fluid separation unit (300) to the second container (C2) in a direction from the upper side to the lower side.

[0364] Referring again to FIG. 3, a process in which a fluid flows in various forms inside a gas separation system (10) according to an embodiment of the present invention is illustrated as an example.

[0365] First, the inflow (FI) of the fluid flowing into the gas separation system (10) is formed along a mixed fluid inflow path (110) that is fluidically connected to a first container (C1) that accommodates a mixed fluid in a gas phase. The inflow (FI) can be defined as the flow of the mixed fluid in a gas phase.

[0366] The inflow (FI) is continuous with the first circulation flow (FC1). The inflow (FI) can be formed by a conveying force provided by an inflow conveying force applying device (610) disposed on the first circulation path (210).

[0367] The first circulation flow (FC1) starts at the upstream end of the first circulation path (210), i.e., at the portion where the first circulation path (210) is fluidly connected to the mixed fluid inlet path (110). The first circulation flow (FC1) extends to the fluid collection cylinder (410) through the inlet filter (510), the utility unit (700), and the first fluid separation unit (310) disposed on the first circulation path (210). The first circulation flow (FC1) can be defined as the flow of the mixed fluid in the gas phase or the residual fluid in the gas phase.

[0368] The first circulation flow (FC1) can be formed by the conveying force provided by the inflow conveying force applying device (610) placed on the first circulation path (210).

[0369] The first circulation flow (FC1) is continuous with the second circulation flow (FC2). The second circulation flow (FC2) starts from the first fluid separation unit (310) and extends to the portion where the second circulation path (220) is fluidly connected to the first circulation path (210), i.e., to the downstream end of the second circulation path (220). The remaining gaseous fluid separated in the first fluid separation unit (310) forms the second circulation flow (FC2) that passes through the second fluid separation unit (320) along the second circulation path (220).

[0370] The remaining gaseous fluid forming the second circulation flow (FC2) passes through the second fluid separation unit (320) and the gaseous discharge fluid is further separated. The separated gaseous discharge fluid forms a first discharge flow (FD1) that is continuous with the second circulation flow (FC2) along the first separation fluid discharge path (131) and is discharged to the outside of the gas separation system (10).

[0371] The remaining gaseous fluid, from which the gaseous exhaust fluid is further separated, flows along the second circulation path (220) and then flows back into the first circulation path (210) to form the first circulation flow (FC1). The second circulation flow (FC2) can be formed by the conveying force provided by the circulating conveying force applying device (620) disposed on the second circulation path (220).

[0372] Meanwhile, the gaseous fluid flowing along the first circulation flow (FC1) to the fluid collection cylinder (410) is mostly a gaseous recovery fluid, but may be mixed with some gaseous discharge fluid. At this time, the gaseous discharge fluid may remain in the gaseous phase in the fluid collection cylinder (410).

[0373] The above gaseous discharge fluid flows along the third circulation path (230) and forms a third circulation flow (FC3). The third circulation flow (FC3) extends from the fluid collection cylinder (410) to the upstream end of the first circulation path (210). The third circulation flow (FC3) is continuous with the first circulation flow (FC1). Accordingly, the gaseous discharge fluid forms the first circulation flow (FC1) again and can be introduced back into the first fluid separation unit (310).

[0374] The liquid-phase recovery fluid captured in the fluid collection cylinder (410) flows along the recovery fluid discharge path (120) to the second container (C2) and forms an outflow flow (FO). At this time, the outflow flow (FO) is formed by passing through an outflow filter (520), and the gaseous discharge fluid remaining in the liquid-phase recovery fluid is separated by the outflow filter (520). The separated gaseous discharge fluid flows along the second separation fluid discharge path (132) by the conveying force provided by the discharge conveying force applying device (630) and forms a second discharge flow (FD2).

[0375] Meanwhile, the liquid-phase recovery fluid that forms the outflow flow (FO) and flows to the second container (C2) is received in the second container (C2). At this time, some gaseous discharge fluid may remain in the liquid-phase recovery fluid. The gaseous discharge fluid forms a fourth circulation flow (FC4) by the conveying force provided by the inflow conveying force applying device (610) and flows along the fourth circulation path (240).

[0376] At this time, the downstream sides of the second circulation flow (FC2), the third circulation flow (FC3), and the fourth circulation flow (FC4) are continuous with the upstream side of the first circulation flow (FC1). Therefore, each of the gaseous fluids forming the second to third circulation flows (FC2, FC3, FC4) again forms the first circulation flow (FC1) and is again introduced into the fluid separation unit (300), so that the separation process of the gaseous recovery fluid can be additionally performed.

[0377] Meanwhile, the cooling device (420) forms a refrigerant flow (FRI, FRO) to be heat-exchanged with the gaseous recovery fluid captured in the fluid capture cylinder (410). The refrigerant inlet flow (FRI) extends from the cooling device (420) to the fluid capture cylinder (410), but branches off at one portion to the second vessel (C2). The refrigerant outlet flow (FRO) extends from the fluid capture cylinder (410) and the second vessel (C2) to the cooling device (420), but joins at one portion.

[0378] Accordingly, the gas separation system (10) according to an embodiment of the present invention can separate the introduced gaseous mixed fluid into a gaseous recovery fluid and a gaseous discharge fluid through multiple separation processes. Consequently, the separation efficiency of the recovery fluid can be improved, and the purity of the separated recovery fluid can also be improved.

[0379] Therefore, in the case of the gas separation system (10) according to an embodiment of the present invention, the separation process of the recovery fluid is performed multiple times, so the separation efficiency and purity of the recovery fluid can be improved.

[0380] Referring to FIGS. 8 to 10, an enclosure (20) housing a gas separation system (10) is illustrated. The enclosure (20) can house the gas separation system (10) such that some components of the gas separation system (10), for example, a main control panel (810) and a sub-control panel (820), are exposed to the outside.

[0381] In addition, some components of the outer case (20) may be configured to be movable. The space formed inside the outer case (20) (i.e., the receiving space (23) to be described later) may be at least partially opened by the above configuration. The first container (C1) containing the gaseous mixed fluid and the second container (C2) containing the liquid recovery fluid may be received in the outer case (20) or withdrawn from the outer case (20) through the partially opened portion.

[0382] The outer case (20) can be formed of a high-strength and high-heat-resistant material. This is to stably support the heavy gas separation system (10) and the first and second containers (C1, C2), and to prevent damage caused by heat generated or absorbed during the fluid recovery process.

[0383] The outer case (20) may have a shape corresponding to the shape of the gas separation system (10). In the illustrated embodiment, the outer case (20) has a rectangular cross-section and a rectangular prism shape having a vertical height.

[0384] In the illustrated embodiment, the enclosure (20) includes a first enclosure opening (21), a second enclosure opening (22), a receiving space (23), a ventilation opening (24), and a door (25).

[0385] The first outer case opening (21) constitutes a passage through which the accommodation space (23) formed inside the outer case (20) and the gas separation system (10) accommodated therein are at least partially exposed to the outside. The first outer case opening (21) is formed penetrating one side of the outer case (20), in the illustrated embodiment, the front side. The main control panel (810) can be exposed to the outside through the first outer case opening (21). The first outer case opening (21) can be formed to have a larger area than the second outer case opening (22).

[0386] The second outer case opening (22) constitutes another passage through which the accommodation space (23) formed inside the outer case (20) and the gas separation system (10) accommodated therein are at least partially exposed to the outside. The second outer case opening (22) is formed penetrating the one surface of the outer case (20), in the illustrated embodiment, the front side. The sub-control panel (820) can be exposed to the outside through the second outer case opening (22). The second outer case opening (22) can be formed to have a smaller area than the first outer case opening (21).

[0387] The accommodation space (23) is a space formed inside the outer case (20). The accommodation space (23) accommodates a gas separation system (10). The accommodation space (23) is connected to the outside through the first outer case opening (21), the second outer case opening (22), and the ventilation opening (24).

[0388] The ventilation opening (24) constitutes a space for outside air to flow into the receiving space (23). Heat generated while the gas separation system (10) is operating can be cooled by the outside air flowing in through the ventilation opening (24). The ventilation opening (24) is formed on the other side of the outer case (20), in the illustrated embodiment, on the rear side. A plurality of ventilation openings (24) can be formed and spaced apart from each other in the width direction and height direction of the outer case (20).

[0389] The door (25) is a part of the outer case (20), that is, a movable component. The door (25) is provided to be movable, so that the receiving space (23) can be opened or closed. The door (25) is formed on another side of the outer case (20), in the illustrated embodiment, on the left side. In one embodiment, the door (25) is provided to be rotatable, so that the left side of the receiving space (23) can be opened or closed. The first and second containers (C1, C2) can be received in the receiving space (23) or withdrawn from the receiving space (23) through the opening opened by the door (25).

[0390] Referring to FIGS. 11 to 23, the flow of a gas separation method using a gas separation system (10) according to an embodiment of the present invention is illustrated as an example. It will be understood that the gas separation method according to the illustrated embodiment can be implemented through the gas separation system (10) according to the embodiment of the present invention described above.

[0391] In the embodiment illustrated in FIG. 11, the gas separation method includes a step (S100) in which a gaseous mixed fluid in which a recovery fluid and an exhaust fluid are mixed is introduced into an inlet / outlet passage section (100), a step (S200) in which a fluid separation section (300) at least partially separates the gaseous recovery fluid from the gaseous mixed fluid, a step (S300) in which a fluid collection section (400) collects the gaseous recovery fluid that has passed through the fluid separation section (300), and the gaseous residual fluid that has passed through the fluid separation section (300) flows along the circulation passage section (200) and is transferred back to the fluid separation section (300), and a step (S400) in which a liquid-phase recovery fluid collected in the fluid collection section (400) is discharged and recovered.

[0392] Referring to Fig. 12, the detailed flow of the step (S100) in which a gaseous mixed fluid containing a recovery fluid and a discharge fluid is introduced into the inlet / outlet passage section (100) is illustrated. This step (S100) is a step (S100) in which a first container (C1) for receiving the gaseous mixed fluid is connected to the inlet / outlet passage section (100) and the gaseous mixed fluid is introduced into the inlet / outlet passage section (100).

[0393] First, a first container (C1) containing a gaseous mixed fluid is placed on an inlet balance member (721) (S110). The mass of the first container (C1) and the gaseous mixed fluid contained therein detected by the inlet balance member (721) can be transmitted to and output by the control unit (800).

[0394] The inflow transfer force application device (610) applies a transfer force to the mixed fluid inflow path (110) (S120). To this end, the transfer force application unit control module (840) of the control unit (800) can control the operation of the inflow transfer force application device (610) in accordance with the mass detected by the inflow scale member (721).

[0395] For example, if the mass detected in the inflow balance member (721) exceeds a preset reference mass value, i.e., the mass of the first container (C1) itself, it can be understood that a gaseous mixed fluid is contained in the first container (C1). In the above case, the transfer force application unit control module (840) can control the inflow transfer force application device (610) so that the inflow transfer force application device (610) operates.

[0396] The first container (C1) is fluidly connected to the mixed fluid inlet passage (110) (S130). Accordingly, the first container (C1) is in communication with the mixed fluid inlet passage (110). The gaseous mixed fluid contained in the first container (C1) is introduced into the mixed fluid inlet passage (110) by the conveying force applied by the inlet conveying force applying device (610) (S140).

[0397] Meanwhile, even if the mass detected by the inflow balance member (721) decreases below a preset reference mass value, the transfer force application unit control module (840) can control the inflow transfer force application device (610) to continue to operate. This is because the inflow transfer force application device (610) applies a transfer force not only to the mixed fluid in the gas phase that is introduced, but also to the discharge fluid in the gas phase that flows along the circulation flow path (200).

[0398] Referring to FIGS. 13 to 15, the detailed flow of the step (S200) in which the fluid separation unit (300) at least partially separates the gaseous recovery fluid from the gaseous mixed fluid is illustrated. This step (S200) is a step (S200) in which a part of the introduced gaseous mixed fluid passes through the fluid separation unit (300) and the remainder passes through the fluid separation unit (300) as is and is separated.

[0399] In order to control the flow rate and pressure of the mixed fluid in the gas phase, the flow control module (850) controls at least one of the pressure control member (730) and the flow rate control member (740) arranged in the first circulation path (210) (S210). At this time, the flow control module (850) controls both the pressure control member (730) and the flow rate control member (740), so that both the flow rate and pressure of the mixed fluid in the gas phase flowing in the first circulation path (210) can be controlled.

[0400] Referring to Fig. 14, the detailed flow of this step (S210) is illustrated as an example.

[0401] First, the flow control module (850) receives information on the pressure and flow rate of the gaseous mixed fluid flowing in the first circulation path (210) (S211). To this end, the flow control module (850) can be electrically connected to a pressure sensor (not shown) and a flow rate sensor (not shown) provided in the first circulation path (210), respectively.

[0402] Thereafter, the flow control module (850) can control the pressure control member (730) and the flow control member (740), respectively. That is, the pressure and flow rate of the gaseous mixed fluid flowing in the first circulation path (210) can be independently controlled.

[0403] The flow control module (850) compares the preset pressure information with the information on the transmitted pressure. If there is a difference in the comparison result, the flow control module (850) controls the pressure control member (730) so that the pressure is adjusted complementarily by the difference (S212).

[0404] Additionally, the flow control module (850) compares the preset flow rate information with the information on the transmitted flow rate. If there is a difference in the comparison result, the flow control module (850) controls the flow rate control member (740) so that the flow rate is adjusted complementarily by the difference (S213).

[0405] In one embodiment, this step (S210) may be performed optionally. That is, the subsequent step (S220) may be performed without performing this step (S210).

[0406] The gaseous mixed fluid introduced through the mixed fluid inlet path (110) flows along the first circulation path (210) to the first fluid separation unit (310) (S220). As described above, the introduced gaseous mixed fluid flows so as to pass through the first fluid separation unit (310) at least once.

[0407] At this time, the fluid separation unit control module (830) can control the temperature of the first fluid separation unit (310) so that the gaseous recovery fluid and the gaseous residual fluid (or discharge fluid) are effectively separated from the gaseous mixed fluid (S230). To this end, the fluid separation unit control module (830) can control the temperature control member (340) provided in the first fluid separation unit (310).

[0408] Referring to Fig. 15, the detailed flow of this step (S230) is illustrated as an example.

[0409] First, the fluid separation unit control module (830) receives information about the temperature of the first fluid separation unit (310) (S231). To this end, the fluid separation unit control module (830) can be electrically connected to a temperature sensing member (350) provided in the first fluid separation unit (310).

[0410] The fluid separation unit control module (830) compares the preset temperature information with the transmitted temperature information. If there is a difference in the comparison result, the fluid separation unit control module (830) controls the temperature control member (340) provided in the first fluid separation unit (310) so that the temperature is adjusted complementarily by the difference (S232).

[0411] In one embodiment, this step (S230) may be performed optionally. That is, the subsequent step (S240) may be performed without performing this step (S230).

[0412] Among the mixed fluids in the gas phase, the gas phase recovery fluid passes through the first fluid separation unit (310) as is, and the gas phase residual fluid passes through the first fluid separation unit (310) and is separated (S240). Therefore, the gas phase recovery fluid and the gas phase residual fluid that have passed through the first fluid separation unit (310) can then flow along different flow paths.

[0413] Referring to FIGS. 16 to 19, the detailed flow of the step (S300) in which the fluid collection unit (400) captures the gaseous recovery fluid that has passed through the fluid separation unit (300), and the gaseous residual fluid that has passed through the fluid separation unit (300) flows along the circulation flow path unit (200) and is transferred back to the fluid separation unit (300) is illustrated.

[0414] This step (S300) is a step (S300) in which the gaseous recovery fluid that has passed through the fluid separation unit (300) is captured by changing into a liquid phase in the fluid collection unit (400), and the remaining gaseous fluid that has passed through the fluid separation unit (300) flows again along the first circulation path (210) and is transferred back to the fluid separation unit (300).

[0415] That is, through this step (S300), a technical feature of a gas separation method according to an embodiment of the present invention, in which residual gaseous fluid or exhaust gaseous fluid circulates through the gas separation system (10) and the gaseous recovery fluid is separated multiple times, can be implemented.

[0416] This step (S300) can be divided into a step (S310) in which the gaseous recovery fluid is captured by changing phase in a fluid capture cylinder (410) and a step (S320) in which the gaseous residual fluid flows through the circulation path (200) and is transferred back to the fluid separation unit (S320).

[0417] Referring to FIG. 17, a detailed flow of a step (S310) in which a gaseous recovery fluid is phase-changed and captured in a fluid capture cylinder (410) is illustrated as an example.

[0418] First, the gaseous recovery fluid that has passed through the first fluid separation unit (310) flows further along the first circulation path (210) and flows into the fluid collection cylinder (410) (S311). The introduced gaseous recovery fluid is cooled by a refrigerant provided by a cooling device (420) connected to the fluid collection cylinder (410) and changes into a liquid phase (S312).

[0419] As described above, in one embodiment, the gaseous recovery fluid may be phase-changed into a liquid phase by a pressure change in the fluid collection cylinder (410). In the above embodiment, the fluid collection cylinder (410) may be connected to any device for compression, such as a pump or compressor.

[0420] The liquid-phase recovery fluid is dropped to the lower side of the fluid collection cylinder (410) and captured (S313). At this time, some gaseous discharge fluid may remain in the gaseous recovery fluid that has flowed into the fluid collection cylinder (410). Even if the gaseous recovery fluid changes into a liquid phase, the gaseous discharge fluid may remain in a gaseous phase. Due to the density difference, the gaseous discharge fluid is located at the upper side of the fluid collection cylinder (410).

[0421] The gaseous discharge fluid remaining in the gaseous recovery fluid flows along the third circulation path (230) which is fluidly connected to the fluid collection cylinder (410). The third circulation path (230) is fluidly connected to the first circulation path (210), so that the gaseous discharge fluid flows again along the first circulation path (210) and is then delivered back to the first fluid separation unit (310) (S314).

[0422] Accordingly, the gaseous discharge fluid remaining in the gaseous recovery fluid initially separated by the first fluid separation unit (310) can be separated once again in the fluid collection cylinder (410). In addition, it will be understood that the gaseous discharge fluid can be introduced back into the first fluid separation unit (310) so that the separation process of the gaseous recovery fluid remaining therein can be performed again.

[0423] Referring to FIG. 18, a detailed flow of a step (S320) in which the residual fluid in the gas phase flows along the circulation path (200) and is transferred back to the fluid separation unit (300) is illustrated as an example.

[0424] The residual fluid in the gas phase, i.e., the residual fluid in the gas phase separated by passing through the first fluid separation unit (310), flows along the second circulation flow path (220) fluidly connected to the first circulation flow path (210) and enters the second fluid separation unit (320) (S321).

[0425] The fluid separation unit control module (830) controls the temperature of the second fluid separation unit (320) so that the gaseous recovery fluid and the gaseous discharge fluid are effectively separated from the gaseous residual fluid (S322).

[0426] Referring to Fig. 19, the detailed flow of this step (S322) is illustrated as an example.

[0427] First, the fluid separation unit control module (830) receives information about the temperature of the second fluid separation unit (320) (S322a). To this end, the fluid separation unit control module (830) may be electrically connected to a temperature sensing member (350) provided in the second fluid separation unit (320).

[0428] The fluid separation unit control module (830) compares the preset temperature information with the received temperature information. If there is a difference in the comparison result, the fluid separation unit control module (830) controls the temperature control member (340) provided in the second fluid separation unit (320) so that the temperature is adjusted complementarily by the difference (S322b).

[0429] This step (S322) may be performed optionally. That is, the subsequent step (S323) may be performed without performing this step (S322).

[0430] Among the gaseous residual fluids flowing into the second fluid separation unit (320), the gaseous recovery fluid passes through the second fluid separation unit (320) as is, and the gaseous discharge fluid passes through the second fluid separation unit (320) and is separated (S323).

[0431] The separated gaseous recovery fluid flows further along the second circulation path (220) and is reintroduced into the first circulation path (210). The gaseous recovery fluid flows further along the first circulation path (210) and is reintroduced into the first fluid separation unit (310) (S324).

[0432] Accordingly, it will be understood that the residual gaseous fluid separated in the first fluid separation unit (310) can be re-introduced into the first fluid separation unit (310) after the remaining gaseous discharge fluid is separated again by the second fluid separation unit (320), so that the separation process of the gaseous recovery fluid can be performed again.

[0433] In addition, the gaseous discharge fluid flows along the first separation fluid discharge path (131) fluidly connected to the second fluid separation unit (320) and is discharged to the outside (S325). Therefore, it will be understood that the gaseous discharge fluid discharged along the first separation fluid discharge path (131) passes through each of the first and second fluid separation units (310, 320) at least once, and the gaseous recovery fluid is separated.

[0434] Referring to FIGS. 20 to 23, the detailed flow of the step (S400) in which the liquid-phase recovery fluid captured in the fluid capture unit (400) is discharged and recovered is illustrated. This step (S400) is a step in which the liquid-phase recovery fluid captured by the fluid capture unit (400) through a phase change is discharged to the outside, and the gaseous discharge fluid remaining in the liquid-phase recovery fluid is additionally separated (S400).

[0435] The liquid-phase recovery fluid captured in the fluid capture cylinder (410) flows along the recovery fluid outlet path (120) fluidly connected to the fluid capture cylinder (410) (S410). By this step (S410), the captured liquid-phase recovery fluid can be transferred to the second container (C2).

[0436] Referring to Figure 21, the detailed flow of this step (S410) is illustrated.

[0437] First, a water level sensor (413) provided in a fluid collection cylinder (410) generates detection information regarding the height of the water surface of the liquid-phase recovery fluid captured in the fluid collection cylinder (410) (S411). The generated detection information is transmitted to a flow control module (850). The water level sensor (413) is electrically connected to the flow control module (850).

[0438] The fluid control module (850) compares the generated detection information with the preset reference height information (S412). That is, this step (S412) is a step (S412) for determining whether the liquid-phase recovery fluid has been captured in the fluid collection cylinder (410) to the extent that it should be discharged.

[0439] If the generated detection information is higher than the reference height information, it can be understood that a situation requires the discharge of liquid-phase recovery fluid. Accordingly, the flow control module (850) controls the valve member (710) to open the recovery fluid discharge path (120) (S413). Accordingly, the fluid collection cylinder (410) and the recovery fluid discharge path (120) are connected.

[0440] The transfer force application control module (840) controls the discharge transfer force application device (630) to operate (S414). As described above, the discharge transfer force application device (630) is fluidly connected to the recovery fluid outlet channel (120) through the second separation fluid outlet channel (132). Accordingly, the discharge transfer force application device (630) can apply a transfer force to the recovery fluid outlet channel (120) and the recovery fluid in the liquid phase flowing therethrough.

[0441] If the generated detection information is lower than the reference height information, it can be understood that the outflow of the liquid-phase recovery fluid is unnecessary. Accordingly, the flow control module (850) controls the valve member (710) to close the recovery fluid outflow path (120) (S415). Accordingly, the communication between the fluid collection cylinder (410) and the recovery fluid outflow path (120) is blocked.

[0442] Although not shown, the fluid control module (850) can control an additional valve (not shown) provided in the fluid collection cylinder (410) in a manner corresponding to the control method of the valve member (710). Accordingly, the fluid collection cylinder (410) and the recovery fluid outlet path (120) can be fluidically connected to or blocked from each other.

[0443] In one embodiment, the reference height information may be composed of a plurality of pieces of information having a relationship with each other.

[0444] At this time, any one reference height information can be defined as height information related to an upper limit, that is, height information that serves as a reference for determining that the amount of liquid-phase recovery fluid captured in the fluid capture cylinder (410) is excessive and requires discharge when exceeded.

[0445] Another reference height information may be defined as height information related to the lower limit, that is, height information that serves as a reference for determining that the amount of liquid-phase recovery fluid captured in the fluid capture cylinder (410) is insufficient and therefore discharge is unnecessary if it is lower than this.

[0446] The transfer force application control module (840) controls the discharge transfer force application device (630) to stop (S416). Accordingly, the liquid recovery fluid does not flow on the recovery fluid discharge path (120).

[0447] Next, the gaseous discharge fluid remaining in the liquid phase recovery fluid is further separated by passing through the discharge filter (520) disposed on the recovery fluid discharge path (120) (S420). By this step (S420), the liquid phase recovery fluid captured in the fluid collection cylinder (410) can be transferred to the second container (C2) after its purity has been further improved.

[0448] Referring to Fig. 22, the detailed flow of this step (S420) is illustrated as an example.

[0449] First, the transfer force application control module (840) controls the flow pump (640) so that the flow rate of the liquid-phase recovery fluid is regulated (S421). As described above, the flow pump (640) can be controlled so that the liquid-phase recovery fluid flows at a constant flow rate along the recovery fluid outlet channel (120).

[0450] Accordingly, the liquid-phase recovery fluid can flow at a preset flow rate and be introduced into the outlet filter (520) (S422). The liquid-phase recovery fluid introduced into the outlet filter (520) can be introduced after the gaseous exhaust fluid is separated again.

[0451] Specifically, the remaining gaseous exhaust fluid passes through the outlet filter (520) and is separated from the liquid-phase recovery fluid. The separated gaseous exhaust fluid flows along the second separation fluid discharge path (132) and is discharged to the outside (S423).

[0452] In addition, the liquid phase recovery fluid from which the gaseous exhaust fluid is separated passes through the discharge filter (520) and continues to flow along the recovery fluid discharge path (120) (S424).

[0453] The liquid-phase recovery fluid that has passed through the outflow filter (520) continues to flow along the recovery fluid outflow path (120) and is received in the second container (C2) (S430).

[0454] Referring to Fig. 23, the detailed flow of this step (S430) is illustrated as an example.

[0455] The liquid-phase recovery fluid flowing along the recovery fluid outlet path (120) is received in the second container (C2) (S431). At this time, the liquid-phase recovery fluid moves to the lower side of the second container (C2) due to the density difference.

[0456] At this time, some gaseous discharge fluid may remain in the liquid-phase recovery fluid introduced, despite the multiple separation processes described above. The gaseous discharge fluid is located at the upper side of the second container (C2) due to the density difference.

[0457] Accordingly, the gaseous discharge fluid remaining in the liquid-phase recovery fluid flows along the fourth circulation path (240) that is fluidly connected to the second container (C2). The fourth circulation path (240) is fluidly connected to the first circulation path (210), so that the gaseous discharge fluid flows into the first circulation path (210) and then flows back into the fluid separation unit (300) (S423).

[0458] Therefore, in this step (S400), the gaseous discharge fluid remaining in the liquid-phase recovery fluid captured in the fluid collection cylinder (410) can be further separated at least once in each of the discharge filter (520) and the second container (C2). In addition, the gaseous discharge fluid separated in the second container (C2) can be transferred back to the fluid separation unit (300) so that any gaseous recovery fluid that may remain can be further separated.

[0459] Therefore, in the gas separation method according to an embodiment of the present invention, the separation process of the recovered fluid is performed multiple times, so that the separation efficiency and purity of the recovered fluid can be improved.

[0460] Although the embodiments of the present invention have been described, the spirit of the present invention is not limited to the embodiments presented in this specification, and those skilled in the art who understand the spirit of the present invention will be able to easily propose other embodiments by adding, changing, deleting, or adding components within the scope of the same spirit, but this will also be considered to fall within the spirit of the present invention.

[0461] 10: Gas separation system 20: Enclosure

[0462] 21: First outer case opening 22: Second outer case opening

[0463] 23: Reception space 24: Ventilation opening

[0464] 25: Door 100: Inflow and outflow passage

[0465] 110: Mixed fluid inlet path 120: Recovery fluid outlet path

[0466] 130: Separation fluid discharge path 131: First separation fluid discharge path

[0467] 132: Second separation fluid discharge path 200: Circulation path section

[0468] 210: 1st Circulation Euro 220: 2nd Circulation Euro

[0469] 230: Third Circulation Euro 240: Fourth Circulation Euro

[0470] 300: Fluid separation unit 310: First fluid separation unit

[0471] 311: First separation membrane 312: Second separation membrane

[0472] 320: Second fluid separation unit 321: Third separation membrane

[0473] 322: Fourth separation membrane 330: Thermal insulation jacket

[0474] 340: Temperature control member 350: Temperature sensing member

[0475] 400: Fluid collection unit 410: Fluid collection cylinder

[0476] 411: Fluid pressure meter 412: Pressure sensor

[0477] 413: Water level sensor 420: Cooling device

[0478] 430: Refrigerant flow path 431: Refrigerant inlet flow path

[0479] 432: Refrigerant leak Euro 500: Filter section

[0480] 510: Inlet filter 520: Outlet filter

[0481] 600: Transfer force application unit 610: Inlet transfer force application device

[0482] 620: Circulation transfer force application device 630: Discharge transfer force application device

[0483] 640: Flow pump 700: Utility section

[0484] 710: Valve member 711: Flow control valve

[0485] 713: Check valve 720: Scale member

[0486] 721: Inflow balance absence 722: Outflow balance absence

[0487] 730: Pressure control member 740: Flow control member

[0488] 800: Control unit 810: Main control panel

[0489] 820: Sub-control panel 830: Fluid separation unit control module

[0490] 840: Transfer force application control module 850: Flow control module

[0491] C1: Container 1 C2: Container 2

[0492] FI: Inflow flow FO: Outflow flow

[0493] FD1: First discharge flow FD2: Second discharge flow

[0494] FC1: First circulation flow FC2: Second circulation flow

[0495] FC3: Third circulation flow FC4: Fourth circulation flow

[0496] FRI: Refrigerant inflow FRO: Refrigerant outflow

Claims

1. An inlet / outlet passage section that receives a gaseous mixed fluid from an external first container and delivers a recovery fluid and a discharge fluid separated from the mixed fluid to the outside; A fluid separation unit configured to separate the mixed fluid in the gas phase into the recovery fluid in the gas phase and the discharge fluid in the gas phase; A circulation flow path part fluidly connected to the above inlet / outlet flow path part and the fluid separation part, respectively; and It includes a fluid collection unit that is fluidly connected to the above circulation flow section and the inlet / outlet flow section, respectively, and receives and captures the recovered fluid in the separated gas phase. The above inlet / outlet flow path is fluidly connected to the fluid collection section and the second container that receives the recovered fluid, The downstream side of the fluid separation unit is positioned higher than the upper side of the fluid collection unit, and the lower side of the fluid collection unit is positioned higher than the second container. The separated recovery fluid flows in a direction from the top to the bottom and is captured in the fluid collection unit and stored in the second container. Gas separation system.

2. In paragraph 1, An outlet filter is disposed on the inlet / outlet passage section and fluidly connected to the inlet / outlet passage section, and is configured to separate the gaseous discharge fluid remaining in the phase-transferred recovery fluid flowing toward the container from the fluid collection section. The inlet end of the above-mentioned effluent filter is positioned lower than the lower side of the fluid collection section in the vertical direction, The outlet of the above outlet filter is positioned higher than the upper side of the second container in the vertical direction. Gas separation system.

3. In paragraph 1, The fluid separation unit is provided in multiple numbers, and the multiple fluid separation units are fluidically connected to each other so that a portion of the mixed fluid in the gas phase that has passed through one of the fluid separation units passes through another fluid separation unit. The above circulating flow section is, A first circulation path fluidly connected to the above inlet / outlet flow path and one of the above fluid separation sections; and Including a second circulation path extending between a portion and another portion of the first circulation path and fluidly connected to the other fluid separation section, The mixed fluid in the gas phase flows along the first circulation path and passes through one of the fluid separation units, and is separated into the recovered fluid in the gas phase and the residual fluid in the gas phase. The residual fluid in the gas phase flows along the second circulation path and passes through the other fluid separation unit, and the discharged fluid in the gas phase is further separated and then re-enters the first circulation path. Gas separation system.

4. In paragraph 3, The part of the first circulation path is located between the point where the first circulation path is connected to the inlet and outlet passages and one of the fluid separation sections. Gas separation system.

5. In paragraph 3, The second circulation path is fluidly connected to one of the fluid separation units, The other fluid separation unit is located between the part of the first circulation path and the one fluid separation unit. Gas separation system.

6. In paragraph 3, The above fluid collection unit, A fluid collection cylinder fluidly connected to the first circulation path and receiving and receiving the recovery fluid in the gas phase that has passed through one of the fluid separation units; and A cooling device connected to the fluid collection cylinder and configured to provide a refrigerant for cooling the gaseous recovery fluid so that the gaseous recovery fluid changes into a liquid phase, The fluid collection cylinder extends in the vertical direction, its upper side is located below the fluid separation section, and its lower side is located above the second container. Gas separation system.

7. In paragraph 6, The above circulating flow section is, including a third circulation path fluidly connected to the fluid collection cylinder and the first circulation path, The liquid phase remaining in the recovered fluid contained in the fluid collection cylinder and the discharged fluid in the gaseous phase that has not undergone a phase change flows along the third circulation path and re-enters the first circulation path. Gas separation system.

8. In paragraph 6, The above inflow and outflow flow section is, A recovery fluid outlet path fluidly connected to the fluid collection cylinder and the second container, The recovered fluid in the phase-changed liquid phase in the fluid collection cylinder flows into the second container along the recovered fluid discharge path. Gas separation system.

9. In paragraph 8, A discharge filter is positioned between the fluid collection cylinder and the second container, and is configured to be fluidly connected to the recovery fluid discharge path and to separate the gaseous discharge fluid remaining in the liquid phase of the recovery fluid. The above inflow and outflow flow section is, Including a separation fluid discharge path fluidically connected to the above discharge filter and forming a path through which the discharge fluid in the separated gas phase is discharged to the outside; Gas separation system.

10. In paragraph 9, A flow pump fluidly connected to the separation fluid discharge path and positioned between the outlet filter and the second container, the flow pump configured to adjust the flow rate of the recovery fluid in the liquid phase passing through the outlet filter. Gas separation system.

11. In paragraph 8, The above circulating flow section is, comprising a fourth circulation path fluidly connected to the second container and the first circulation path; The gaseous mixed fluid remaining in the liquid phase recovered fluid introduced into the second container flows along the fourth circulation path and re-enters the first circulation path. Gas separation system.

12. A fluid separation unit configured to receive a gaseous mixed fluid from the outside and separate the delivered gaseous mixed fluid into a gaseous recovery fluid and a gaseous discharge fluid; and It includes a fluid collection unit that is fluidly connected to the fluid separation unit and receives and captures the recovered fluid in the separated gas phase. The downstream side of the fluid separation unit is positioned higher than the upper side of the fluid collection unit, so that the separated recovery fluid flows in a direction from the upper side to the lower side and is captured in the fluid collection unit. Gas separation system.

13. A fluid separation unit configured to receive a gaseous mixed fluid from an external first container and separate the delivered gaseous mixed fluid into a gaseous recovery fluid and a gaseous discharge fluid; and It includes a fluid collection unit that is fluidly connected to the fluid separation unit and receives and captures the recovered fluid in the separated gas phase. The lower part of the fluid collection unit is positioned higher than the second external container, so that the recovered fluid collected in the fluid collection unit is received in the second container in a direction from the upper side to the lower side. Gas separation system.

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