Phase separator, carbon dioxide capture system, and method for adjusting phase separator

Abstract

The present disclosure relates to the technical field of carbon dioxide capture, and provides a phase separator, a carbon dioxide capture system, and a method for adjusting a phase separator. The phase separator comprises a phase separation body and a phase separation assembly; the phase separation body has a liquid inlet, a first liquid outlet and a second liquid outlet; the phase separation assembly comprises a phase separation component; the phase separation component comprises a fixed plate and an adjustable plate; the fixed plate extends in the radial direction of the phase separation body; the fixed plate is sealedly connected to the inner wall surface of the phase separation body; the adjustable plate extends in the height direction of the phase separation body; the adjustable plate is sealedly connected to the fixed plate; the height of the adjustable plate is adjustable; the phase separation component and the inner wall surface of the phase separation body define a phase separation chamber; the phase separation chamber is open at the end distant from the fixed plate; and the first liquid outlet is flush with the end of the fixed plate distant from the second liquid outlet, so as to discharge liquid from the phase separation chamber.

Description

Phase separator, carbon dioxide capture system and method of conditioning a phase separator

[0001] Cross-reference to related applications

[0002] The present disclosure is based on and claims priority from Chinese Patent Application No. 202410476128.9 filed on April 19, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of carbon dioxide capture, in particular to a phase separator, a carbon dioxide capture system and a method of conditioning a phase separator. BACKGROUND

[0004] The chemical absorption method is the most widely used method for absorbing carbon dioxide. In the operation of a carbon dioxide capture system, an absorbent absorbs carbon dioxide in an absorption tower, and the rich liquid of the absorbent loaded with carbon dioxide is sent to a regeneration tower for heating and regeneration. Due to the high proportion of water in the absorbent, a large amount of energy is consumed for the heating and volatilization of water during the high-temperature desorption of carbon dioxide in the regeneration tower, resulting in high energy consumption and operating cost of the carbon capture system. SUMMARY

[0005] The present disclosure aims to at least partially solve one of the technical problems in the related art. To this end, an embodiment of the present disclosure proposes a phase separator that can phase separate the rich liquid, improve the phase separation efficiency, and thus reduce the solution entering the regeneration tower, thereby reducing the operating cost.

[0006] An embodiment of the present disclosure further proposes a carbon dioxide capture system.

[0007] An embodiment of the present disclosure further proposes a method of conditioning a phase separator.

[0008] An embodiment of the present disclosure provides a phase separator, comprising:

[0009] a phase separation body having a liquid inlet, a first liquid outlet and a second liquid outlet, the liquid inlet and the first liquid outlet being arranged at intervals in the circumferential direction of the phase separation body, and the first liquid outlet and the second liquid outlet being arranged at intervals in the height direction of the phase separation body;

[0010] The phase separation assembly comprises a phase separation component, the phase separation component comprises a fixed plate and an adjusting plate, the fixed plate extends along the radial direction of the phase separation body, one end of the fixed plate is sealingly connected with the inner wall surface of the phase separation body, the adjusting plate extends along the height direction of the phase separation body, one end of the adjusting plate is sealingly connected with the other end of the fixed plate, the height of the adjusting plate is adjustable, the fixed plate, the adjusting plate and the inner wall surface of the phase separation body define a phase separation chamber, the phase separation chamber is arranged with an opening away from one end of the fixed plate, the first liquid outlet is flush with one end of the fixed plate away from the second liquid outlet, and the first liquid outlet communicates with the phase separation chamber to discharge the liquid in the phase separation chamber.

[0011] The phase separator of the embodiment of the present disclosure can separate the rich liquid, improve the phase separation efficiency, and then reduce the solution entering the regeneration tower, thereby reducing the operation cost.

[0012] In some embodiments, the adjusting plate is a first arc-shaped plate, two ends of the first arc-shaped plate in the arc length direction are respectively sealingly connected with the inner wall surface of the phase separation body, and one end of the first arc-shaped plate in the height direction is sealingly connected with the fixed plate.

[0013] In some embodiments, the number of the adjusting plates is multiple, the adjacent adjusting plates are movably connected, and one of the adjusting plates relative to the other adjusting plate moves between a retracted position and an extended position, in the retracted position, the one adjusting plate is located in the other adjusting plate, and in the extended position, the one adjusting plate is located outside the other adjusting plate.

[0014] In some embodiments, the phase separator further comprises a detection piece, the detection piece is movably connected with the inner wall surface of the phase separation body, so that the detection piece is movable relative to the phase separation body along the height direction of the phase separation body.

[0015] In some embodiments, the phase separation assembly further comprises a second arc-shaped plate, the second arc-shaped plate is located in the phase separation body and arranged adjacent to the liquid inlet, and two ends of the second arc-shaped plate in the arc length direction are respectively sealingly connected with the inner wall surface of the phase separation body.

[0016] In some embodiments, the phase separator further comprises a first pump and a first valve, the first valve is arranged at the first liquid outlet, the first valve communicates with the first pump, the first valve is used for adjusting the flow of the first liquid outlet, and the first pump is used for adjusting the flow rate of the first liquid outlet.

[0017] In some embodiments, the phase separator further comprises a second pump and a second valve, the second valve is arranged at the second liquid outlet, the second valve is in communication with the second pump, the second valve is used for adjusting the flow of the second liquid outlet, and the second pump is used for adjusting the flow rate of the second liquid outlet.

[0018] The embodiments of the present disclosure further provide a carbon dioxide capture system, comprising:

[0019] a phase separator, which is the phase separator described in the above embodiments;

[0020] an absorption tower, an outlet of the absorption tower being in communication with a liquid inlet of the phase separator, and an inlet of the absorption tower being in communication with a first liquid outlet of the phase separator;

[0021] a regeneration tower, an inlet of the regeneration tower being in communication with a second liquid outlet of the phase separator.

[0022] In some embodiments, the carbon dioxide capture system further comprises a mixer, one end of the mixer being in communication with the first liquid outlet and an outlet of the regeneration tower respectively, and the other end of the mixer being connected to the inlet of the absorption tower.

[0023] The carbon dioxide capture system of the embodiments of the present disclosure can reduce the operating cost.

[0024] The embodiments of the present disclosure further provide a phase separator adjustment method, comprising:

[0025] introducing a two-phase solution into the phase separation body, the two-phase solution is phase-separated into a first phase separation layer and a second phase separation layer in the phase separation body, and the density of the first phase separation layer is less than that of the second phase separation layer;

[0026] when the real-time liquid level height in the phase separation body is a first preset value, opening the second liquid outlet to discharge the second phase separation layer, and the liquid inlet amount is greater than the liquid outlet amount of the second liquid outlet;

[0027] when the real-time liquid level height in the phase separation body is a second preset value, opening the first liquid outlet to discharge the first phase separation layer into the phase separation chamber, and the second preset value is greater than the first preset value, and the liquid inlet amount is equal to the sum of the liquid outlet amounts of the first liquid outlet and the second liquid outlet;

[0028] when the real-time liquid level height in the phase separation body is a third preset value, closing the liquid inlet, and the third preset value is greater than the second preset value;

[0029] adjusting the height of the adjusting plate according to the phase interface height detected by the detection member, so that the sum of the height of the adjusting plate and the height of the first liquid outlet is equal to the phase interface height.

[0030] The adjusting method of the phase separator of the embodiment of the present disclosure can improve the phase separation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0031] Fig. 1 is a schematic view of a phase separator according to an embodiment of the present disclosure.

[0032] Fig. 2 is a schematic view of another perspective of a phase separator according to an embodiment of the present disclosure.

[0033] Fig. 3 is a schematic view of a carbon dioxide capture system according to an embodiment of the present disclosure.

[0034] Reference signs: 100, phase separator; 200, absorption tower; 210, inlet of the absorption tower; 220, outlet of the absorption tower; 300, regeneration tower; 310, inlet of the regeneration tower; 320, outlet of the regeneration tower; 400, mixer; 1, phase separation body; 11, liquid inlet; 12, first liquid outlet; 13, second liquid outlet; 2, phase separation assembly; 21, phase separation component; 211, fixed plate; 212, adjusting plate; 213, phase separation cavity; 22, second arc-shaped plate; 3, detection piece; 4, first pump; 5, first valve; 6, second pump; 7, second valve. DETAILED DESCRIPTION

[0035] Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present disclosure, and cannot be understood as a limitation of the present disclosure.

[0036] The embodiment of the present disclosure provides a phase separator 100, which comprises a phase separation body 1 and a phase separation assembly 2. The phase separation body 1 has a liquid inlet 11, a first liquid outlet 12 and a second liquid outlet 13, the liquid inlet 11 and the first liquid outlet 12 are arranged at intervals in the circumferential direction of the phase separation body 1, and the first liquid outlet 12 and the second liquid outlet 13 are arranged at intervals in the height direction (up-down direction as shown in Fig. 1) of the phase separation body 1. The phase separation assembly 2 comprises a phase separation component 21, which comprises a fixed plate 211 and an adjusting plate 212, the fixed plate 211 extends in the radial direction of the phase separation body 1, one end of the fixed plate 211 is sealingly connected to the inner wall surface of the phase separation body 1, the adjusting plate 212 extends in the height direction of the phase separation body 1, one end of the adjusting plate 212 is sealingly connected to the other end of the fixed plate 211, the height of the adjusting plate 212 is adjustable, the fixed plate 211, the adjusting plate 212 and the inner wall surface of the phase separation body 1 define a phase separation cavity 213, the phase separation cavity 213 is arranged open away from one end of the fixed plate 211, the first liquid outlet 12 is flush with one end of the fixed plate 211 away from the second liquid outlet 13, and the first liquid outlet 12 communicates with the phase separation cavity 213 to discharge the liquid in the phase separation cavity 213.

[0037] It should be noted that the two-phase solution is separated into the first and second phase layers in the phase separator 100, and the phase separator 100 of the embodiment of the present disclosure can be applied to separate the rich liquid in the carbon dioxide capture system, the load of carbon dioxide in the first and second phase layers separated from the rich liquid in the phase separator 100 is different, the first and second phase layers need to be separated, and as the phase separator 100 operates, the phase separation interface fluctuates up and down, and it is difficult to accurately position the phase separation interface, which can easily lead to the difficulty in accurately separating the first and second phase layers.

[0038] In some embodiments, as shown in FIGS. 1 and 2, the liquid inlet 11 is located on the right side of the phase separator 100, the first liquid outlet 12 is located on the left side of the phase separator 100, and the second liquid outlet 13 is located below the phase separator 100. The phase separator 100 has a chamber, the liquid inlet 11 is used to introduce a solution to be separated into the phase separator 100, the solution to be separated is separated into the first and second phase layers in the phase separator 100, the first phase layer is located above the second phase layer, the first liquid outlet 12 is used to discharge the first phase layer, and the second liquid outlet 13 is used to discharge the second phase layer.

[0039] The left end of the fixed plate 211 is sealingly connected to the inner wall surface of the phase separation body 1, and the right end of the fixed plate 211 is sealingly connected to the lower left end of the adjusting plate 212. The adjusting plate 212 extends in the up-down direction, and the size of the adjusting plate 212 in the up-down direction is adjustable to adapt to the phase separation interface of different heights. The fixed plate 211, the adjusting plate 212, and the inner wall surface of the phase separation body 1 surround the phase separation chamber 213, the phase separation chamber 213 is open at the upper end, the first liquid outlet 12 is located in the phase separation chamber 213, and the upper end surface of the fixed plate 211 is flush with the first liquid outlet 12, so that the solution entering the phase separation chamber 213 through the upper end opening of the phase separation chamber 213 can be discharged through the first liquid outlet 12.

[0040] For example, for two-phase absorbents with different formulations, the phase separation ratio, that is, the ratio of the first and second phase layers, is different, and the phase separation ratio is generally between 4 / 6 and 6 / 4. Accordingly, the height of the first liquid outlet 12 in the embodiment of the present disclosure is set to be 1 / 5-3 / 5 of the height of the phase separator 100, and the movable range of the adjusting plate 212 is greater than the height of the first liquid outlet 12 and less than the height of the phase separator 100.

[0041] The phase separator 100 of the embodiment of the present disclosure forms the phase separation chamber 213 by arranging the phase separation component 21 at the first liquid outlet 12, so that when the real-time height of the solution in the phase separator 100 is greater than the height of the upper end surface of the adjusting plate 212, the solution above or at the same height as the upper end surface of the adjusting plate 212 flows into the phase separation chamber 213 through the upper end opening of the phase separation chamber 213, and then the solution in the phase separation chamber 213 is discharged through the first liquid outlet 12, and the solution below the upper end surface of the adjusting plate 212 is discharged through the second liquid outlet 13. During the operation of the phase separator 100, the size of the adjusting plate 212 in the up-down direction is adjusted in real time to keep the upper end surface of the adjusting plate 212 at the same height as the phase interface in the phase separator 100, so as to ensure that the first phase separation layer enters the phase separation chamber 213 and is discharged through the first liquid outlet 12, and the second phase separation layer is discharged through the second liquid outlet 13, thereby improving the phase separation precision and efficiency.

[0042] Further, the embodiment of the present disclosure separates the rich liquid, and transmits the solution of the second phase separation layer to the regeneration tower 300 for regeneration, so as to reduce the solution entering the regeneration tower 300, and further reduce the participation of water in the high-temperature desorption process, thereby reducing the regeneration energy consumption and operation cost.

[0043] In some embodiments, the adjusting plate 212 is a first arc-shaped plate, the two ends of the first arc-shaped plate are sealingly connected with the inner wall surface of the phase separation body 1 in the arc length direction of the first arc-shaped plate, and one end of the first arc-shaped plate in the height direction is sealingly connected with the fixed plate 211.

[0044] In some embodiments, as shown in FIGS. 1 and 2, the adjusting plate 212 is a first arc-shaped plate, the two ends of the first arc-shaped plate are sealingly connected with the inner wall surface of the phase separation body 1 to form the wall surface of the phase separation chamber 213, and the lower end of the first arc-shaped plate is sealingly connected with the fixed plate 211 to form the bottom surface of the phase separation chamber 213. The arrangement of the first arc-shaped plate can provide a buffering effect for the first phase separation layer, and in response to the liquid level being higher than the height of the adjusting plate 212, the upper liquid flows into the phase separation chamber 213 and is stably discharged through the first liquid outlet 12, thereby improving the stability of the first phase separation layer.

[0045] For example, the sealing connection between the first arc-shaped plate and the inner wall surface of the phase separator 100 is achieved by a clamping groove buckle, which facilitates the adjustment of the height of the first arc-shaped plate.

[0046] In some embodiments, the number of adjusting plates 212 is multiple, the adjacent adjusting plates 212 are movably connected, and one of the adjacent adjusting plates 212 moves relative to the other adjusting plate 212 between a retracted position and an extended position. In the retracted position, one adjusting plate 212 is located in the other adjusting plate 212, and in the extended position, one adjusting plate 212 is located outside the other adjusting plate 212.

[0047] In some embodiments, as shown in FIG. 1, when the plurality of adjusting plates 212 are all in the extended position, the plurality of adjusting plates 212 are arranged in sequence in the up-down direction, the adjusting plates 212 have the largest size in the up-down direction, the adjusting plates 212 have accommodating cavities, when the plurality of adjusting plates 212 are all in the retracted position, the adjusting plate 212 located above is sequentially accommodated into the adjusting plate 212 located below, and the adjusting plates 212 have the smallest size in the up-down direction.

[0048] For example, when the number of adjusting plates 212 is three, in the extended position, the three adjusting plates 212 are arranged in sequence in the up-down direction, from bottom to top, they are the first adjusting plate, the second adjusting plate and the third adjusting plate, when the three adjusting plates 212 are in the retracted position, the first adjusting plate is fixed, the third adjusting plate is moved downward to retract into the second adjusting plate, and the second adjusting plate is moved downward to retract into the first adjusting plate, that is, among the two adjacent adjusting plates 212, the adjusting plate 212 located above is nested in the core of the adjusting plate 212 located below to form a nest, the largest size of the adjusting plates 212 in the up-down direction is the sum of the heights of the first adjusting plate, the second adjusting plate and the third adjusting plate, the largest size of the adjusting plates 212 in the up-down direction is the height of the first adjusting plate, when the height of the adjusting plate 212 needs to be adjusted, the position of the adjusting plate 212 is changed to adjust the height to adapt to the height of the different phase interfaces.

[0049] For example, a brake is arranged on the top or bottom of the adjusting plate 212, the brake can adopt a plurality of telescopic rods respectively connected to different adjusting plates 212 to drive the adjusting plates 212 to extend and retract in the up-down direction. Alternatively, a lead screw nut is arranged, the nut sleeved on the lead screw is connected to the adjusting plate 212 to change the position of the adjusting plate 212, the embodiments of the present disclosure do not limit the arrangement of the brake, as long as the adjusting plate 212 can be adjusted to different positions in the up-down direction, it belongs to the protection scope of the embodiments of the present disclosure.

[0050] In some embodiments, the phase separator 100 further comprises a detection piece 3 movably connected to the inner wall surface of the phase separation body 1, so that the detection piece 3 is movable relative to the phase separation body 1 along the height direction of the phase separation body 1.

[0051] In some embodiments, as shown in FIG. 1, through the movable connection of the detection piece 3 and the phase separation body 1, the real-time movement of the detection piece 3 can real-time feedback the electrical conductivity at different liquid levels, through monitoring the difference of the electrical conductivity, the height position of the phase interface can be real-time monitored and determined.

[0052] In some embodiments, the phase separator 100 further comprises a controller connected to the detection member 3 and the brake of the adjusting plate 212 respectively, and the controller can adjust the working state of the brake according to the received height of the phase interface, so as to change the height of the adjusting plate 212.

[0053] For example, the moving speed of the detection member 3 can be adjusted according to different phase separation solutions.

[0054] For example, the number of detection members 3 can also be multiple, and the detection member 3 is a conductivity detector, and multiple conductivity detectors are uniformly distributed at different heights of the inner wall of the phase separator 100. The smaller the interval distance of the conductivity detectors, the higher the monitoring accuracy.

[0055] In some embodiments, the phase separation assembly 2 further comprises a second arc-shaped plate 22, which is arranged in the phase separation body 1 and adjacent to the liquid inlet 11, and the two ends of the second arc-shaped plate 22 in the arc length direction are respectively sealingly connected with the inner wall surface of the phase separation body 1.

[0056] In some embodiments, as shown in FIGS. 1 and 2, the second arc-shaped plate 22 is provided, and the arc-shaped baffle can reduce the turbulence of the liquid flow and improve the phase separation efficiency.

[0057] For example, the radius of the second arc-shaped plate 22 is smaller than that of the first arc-shaped plate.

[0058] Embodiments of the present disclosure can reduce the disturbance of the solution to the liquid level in the phase separator 100 by providing the second arc-shaped plate 22 at the liquid inlet 11 to resist the solution.

[0059] In some embodiments, the phase separator 100 further comprises a first pump 4 and a first valve 5, the first valve 5 is arranged at the first liquid outlet 12, the first valve 5 is in communication with the first pump 4, the first valve 5 is used to adjust the flow of the first liquid outlet 12, and the first pump 4 is used to adjust the flow rate of the first liquid outlet 12.

[0060] In some embodiments, the phase separator 100 further comprises a second pump 6 and a second valve 7, the second valve 7 is arranged at the second liquid outlet 13, the second valve 7 is in communication with the second pump 6, the second valve 7 is used to adjust the flow of the second liquid outlet 13, and the second pump 6 is used to adjust the flow rate of the second liquid outlet 13.

[0061] In some embodiments, as shown in FIG. 1, the first pump 4 is located downstream of the first valve 5, and the second pump 6 is located downstream of the second valve 7. By arranging the first valve 5 and the first pump 4, the flow rate and flow of the first liquid outlet 12 can be adjusted. By arranging the second valve 7 and the second pump 6, the flow rate and flow of the second liquid outlet 13 can be adjusted.

[0062] The embodiment of the present disclosure can monitor the position of the phase interface in real time by monitoring the conductivity of the first phase separation layer and the second phase separation layer through the detection member 3, adjusting the height of the adjusting plate 212 according to the height of the phase interface, and adjusting the opening of the first valve 5, the opening of the second valve 7, and the liquid inlet flow rate and flow of the liquid inlet 11, so as to accurately control the phase interface, ensure that the first phase separation layer is discharged from the first liquid outlet 12, and the second phase separation layer is discharged from the second liquid outlet 13.

[0063] The embodiment of the present disclosure also provides a carbon dioxide capture system, which comprises the phase separator 100, an absorption tower 200 and a regeneration tower 300. The phase separator 100 is the phase separator 100 of the above-mentioned embodiment. The outlet 220 of the absorption tower is in communication with the liquid inlet 11 of the phase separator 100, and the inlet 210 of the absorption tower is in communication with the first liquid outlet 12 of the phase separator 100. The inlet 310 of the regeneration tower is in communication with the second liquid outlet 13 of the phase separator 100.

[0064] In some embodiments, as shown in FIG. 3, the phase separator 100 is located between the absorption tower 200 and the regeneration tower 300, and the phase separation of the rich liquid before entering the regeneration tower 300 is realized through the phase separator 100, and the concentration layer is divided into a carbon dioxide rich phase layer and a carbon dioxide poor phase layer, that is, the first phase separation layer is a carbon dioxide poor phase layer, and the second phase separation layer is a carbon dioxide rich phase layer, so as to realize the re-distribution and further enrichment of carbon dioxide in the rich liquid, transmit the carbon dioxide rich phase layer to the regeneration tower 300 for desorption, reduce the total liquid amount entering the regeneration tower 300, reduce the participation of water in the high-temperature desorption process, maximize the use of steam heat and reduce the regeneration energy consumption, and reduce the operation cost of the carbon dioxide capture system.

[0065] In some embodiments, the carbon dioxide capture system further comprises a mixer 400, one end of the mixer 400 is in communication with the first liquid outlet 12 and the outlet 320 of the regeneration tower respectively, and the other end of the mixer 400 is connected with the inlet 210 of the absorption tower.

[0066] In some embodiments, the inlet of the mixer is in communication with the first liquid outlet and the outlet of the regeneration tower, so as to mix the solution of the carbon dioxide poor phase layer and the lean liquid after desorption, and then transmit the mixed solution into the absorption tower. The embodiment of the present disclosure can realize the phase separation of the rich liquid, transmit the solution of the second phase separation layer into the regeneration tower for regeneration, reduce the solution entering the regeneration tower, mix the lean liquid after desorption of the regeneration tower with the first phase separation layer, and then transmit the mixed solution into the regeneration tower, and improve the mixing uniformity of the solution.

[0067] The embodiment of the present disclosure also provides an adjusting method of the phase separator, which comprises: introducing a two-phase solution into the phase separation body, the two-phase solution is phase-separated in the phase separation body to form a first phase separation layer and a second phase separation layer, and the density of the first phase separation layer is less than that of the second phase separation layer.

[0068] when the real-time liquid level height in the phase separation body is the first preset value, the second liquid outlet is opened to discharge the second phase separation layer, and the liquid inflow amount is greater than the liquid outflow amount of the second liquid outlet;

[0069] when the real-time liquid level height in the phase separation body is the second preset value, the first liquid outlet is opened to discharge the first phase separation layer entering the phase separation chamber, and the second preset value is greater than the first preset value, and the liquid inflow amount is equal to the sum of the liquid outflow amounts of the first liquid outlet and the second liquid outlet;

[0070] when the real-time liquid level height in the phase separation body is the third preset value, the liquid inlet is closed, and the third preset value is greater than the second preset value;

[0071] The height of the adjusting plate is adjusted according to the phase interface height detected by the detection member, so that the sum of the height of the adjusting plate and the height of the first liquid outlet is equal to the phase interface height.

[0072] In some embodiments, the real-time height of the solution in the phase separation body is set as h, the height of the phase interface is set as p, the height of the first liquid outlet is set as m, the height of the adjusting plate is set as n, the distance between the adjusting plate and the top wall surface of the phase separation body is set as L, the volume above the position of the first liquid outlet is set as V1, and the volume below the first liquid outlet is set as V2, and the embodiments of the present disclosure are applicable to the volume ratio of the first phase and the second phase being less than or equal to V1 / V2.

[0073] The first preset value is less than or equal to the sum of the height m of the first liquid outlet and the height n of the adjusting plate, the second preset value is greater than the first preset value and less than the height of the phase separation body, and the third preset value is equal to the height of the phase separation body, that is, after the two-phase solution is introduced into the phase separator through the liquid inlet, when h≤m+n, the second liquid outlet is opened, the first liquid outlet is closed, and the solution flow rate flowing into the phase separator through the liquid inlet is kept greater than the outflow rate of the second liquid outlet. When m+n

[0074] It can be understood that the point at which the conductivity changes is the horizontal height p of the phase interface, and the height n of the adjusting plate is changed according to the change point of the conductivity value, so that the phase interface height p=m+L+type flow guide plate height n.

[0075] When the two-phase solution is finished being separated, the liquid inlet is closed, the first liquid outlet and the second liquid outlet are opened when m+n

[0076] In the description of the present disclosure, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present disclosure.

[0077] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0078] In the present disclosure, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection or communication with each other; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0079] In the present disclosure, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0080] In this disclosure, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material, or characteristic being described in connection with the embodiment or example is included in at least one embodiment or example of the disclosure. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily referred to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Moreover, the terms "first", "second", "third", etc. can not necessarily be understood as referring to the same embodiment or example, unless otherwise indicated by the context.

[0081] It can be understood that the above-mentioned embodiments are exemplary and cannot be understood as a limitation of the disclosure, and those of ordinary skill in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the disclosure.

Claims

1. A phase separator, comprising: a phase separating body having an inlet, a first outlet and a second outlet, the inlet and the first outlet being arranged in a circumferential direction of the phase separating body, the first outlet and the second outlet being arranged in a height direction of the phase separating body; a phase separating assembly comprising a phase separating component, the phase separating component comprising a fixed plate and an adjustable plate, the fixed plate extending in a radial direction of the phase separating body, one end of the fixed plate being sealingly connected to an inner wall surface of the phase separating body, the adjustable plate extending in the height direction of the phase separating body, one end of the adjustable plate being sealingly connected to the other end of the fixed plate, the adjustable plate being adjustable in height, the fixed plate, the adjustable plate and the inner wall surface of the phase separating body defining a phase separating chamber, the phase separating chamber being open at an end of the fixed plate away from the phase separating body, the first outlet being flush with the end of the fixed plate away from the second outlet, the first outlet being in communication with the phase separating chamber for discharging liquid in the phase separating chamber.

2. The phase splitter of claim 1, wherein, The adjustable plate is a first arc-shaped plate, two ends of the first arc-shaped plate in an arc length direction of the first arc-shaped plate being sealingly connected to the inner wall surface of the phase separating body, one end of the first arc-shaped plate in the height direction of the first arc-shaped plate being sealingly connected to the fixed plate.

3. The phase splitter of claim 2, wherein, The number of the adjustable plates is multiple, adjacent adjustable plates being movably connected, and one of the adjustable plates relative to another of the adjustable plates being movable between a retracted position and an extended position, in the retracted position, the one adjustable plate being located in the other adjustable plate, in the extended position, the one adjustable plate being located out of the other adjustable plate.

4. The phase splitter of any one of claims 1-3, wherein, Further comprising a detection member movably connected to the inner wall surface of the phase separating body, so that the detection member is movable relative to the phase separating body in the height direction of the phase separating body.

5. The phase splitter of claim 4, wherein, The phase separating assembly further comprises a second arc-shaped plate, the second arc-shaped plate being located in the phase separating body and arranged adjacent to the inlet, two ends of the second arc-shaped plate in an arc length direction of the second arc-shaped plate being sealingly connected to the inner wall surface of the phase separating body.

6. The phase splitter of any one of claims 1-5, wherein, Further comprising a first pump and a first valve, the first valve being arranged at the first outlet, the first valve being in communication with the first pump, the first valve being used for adjusting a flow rate of the first outlet, the first pump being used for adjusting a flow velocity of the first outlet.

7. The phase splitter of claim 6, wherein, Further comprising a second pump and a second valve, the second valve being arranged at the second outlet, the second valve being in communication with the second pump, the second valve being used for adjusting a flow rate of the second outlet, the second pump being used for adjusting a flow velocity of the second outlet. 8.A carbon dioxide capture system, comprising: a phase separator, the phase separator being the phase separator according to any one of claims 1-7; an absorption tower, an outlet of the absorption tower being in communication with the inlet of the phase separator, an inlet of the absorption tower being in communication with the first outlet of the phase separator; a regeneration tower, an inlet of the regeneration tower being in communication with the second outlet of the phase separator.

9. The carbon dioxide capture system of claim 8, wherein, The mixer is communicated with the first liquid outlet and the outlet of the regeneration tower respectively at one end, and communicated with the inlet of the absorption tower at the other end.

10. A method of adjusting a phase separator, comprising: introducing a two-phase solution into a phase separation body, the two-phase solution being phase separated into a first phase separation layer and a second phase separation layer in the phase separation body, and the first phase separation layer having a smaller density than the second phase separation layer; when a real-time liquid level in the phase separation body is a first preset value, opening a second liquid outlet to discharge the second phase separation layer, and an inlet liquid amount being greater than an outlet liquid amount of the second liquid outlet; when the real-time liquid level in the phase separation body is a second preset value, opening a first liquid outlet to discharge the first phase separation layer into the phase separation chamber, and the second preset value being greater than the first preset value, and the inlet liquid amount being equal to a sum of outlet liquid amounts of the first liquid outlet and the second liquid outlet; when the real-time liquid level in the phase separation body is a third preset value, closing the inlet, and the third preset value being greater than the second preset value; adjusting a height of an adjusting plate according to a phase interface height detected by a detection member, so that a sum of the height of the adjusting plate and a height of the first liquid outlet is equal to the phase interface height.

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