Testing device for carbon capture film

Abstract

The invention provides a carbon capture membrane testing device, which comprises at least one carbon capture membrane assembly, a gas distribution assembly, an exhaust pipeline, a flow control assembly and a carbon dioxide concentration detection assembly, and is characterized in that each carbon capture membrane assembly is internally provided with a carbon capture membrane; each carbon capture membrane assembly is provided with a raw material gas inlet, a product gas outlet and a trapped gas outlet; the gas distribution assembly is used for providing a mixed gas containing a preset carbon dioxide concentration to the raw material gas inlet; the product gas outlet and the trapped gas outlet are respectively communicated with the exhaust pipeline through mutually independent exhaust branches; the flow control assemblies and the carbon dioxide concentration detection assemblies are arranged at the upstream of the raw material gas inlet and the downstream of the product gas outlet. The testing device for the carbon capture film is particularly suitable for the test stage of a laboratory, and can provide required test parameters for research and development of the carbon capture film.

Description

Technical Field

[0001] The invention relates to the technical field of membrane separation testing, and in particular to a testing device for a carbon capture membrane. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] During the research and development of carbon capture membranes, it is usually necessary to test carbon capture membranes with different technical parameters to detect whether they meet the technical requirements set by the research and development. Different testing methods are also needed to detect whether they meet market demand.

[0004] However, the current testing method requires the carbon capture membrane to be mass-produced and then installed on the production line for testing. This testing method not only reduces R&D efficiency but also causes waste. Summary of the invention

[0005] The purpose of the present invention is to at least solve the technical problem of how to quickly and conveniently test the carbon capture membrane during the research and development process. This purpose is achieved through the following technical solutions:

[0006] The present invention provides a testing device for a carbon capture membrane, the testing device for the carbon capture membrane comprising:

[0007] At least one carbon capture membrane assembly, each of which is provided with a carbon capture membrane, and each of which is provided with a feed gas inlet, a product gas outlet, and a retained gas outlet;

[0008] A gas distribution component, the gas distribution component is used to provide a mixed gas containing a preset carbon dioxide concentration to the raw material gas inlet;

[0009] An exhaust pipeline, wherein the product gas outlet and the trapped gas outlet are respectively connected to the exhaust pipeline through mutually independent exhaust branches;

[0010] A flow control component and a carbon dioxide concentration detection component are provided upstream of the raw material gas inlet and downstream of the product gas outlet.

[0011] In the testing device for the carbon capture membrane provided by the present invention, the carbon capture membrane to be tested is placed in a carbon capture membrane assembly. After the mixed gas is input into the raw gas inlet of the carbon capture membrane assembly through the gas distribution assembly, the flow control assembly obtains the flow of the mixed gas upstream of the raw gas inlet and downstream of the product gas outlet. Combined with the carbon dioxide concentration monitored by the carbon dioxide concentration detection assembly, the recovery rate of the carbon capture membrane for the carbon in the mixed gas can be obtained, thereby testing whether the carbon capture membrane meets the preset technical requirements.

[0012] Among them, the carbon capture membrane to be tested can be rolled into a membrane assembly with a smaller effective membrane area, such as a membrane assembly 1812 style, that is, a diameter of 1.8 inches, a length of 12 inches, and an effective membrane area of ​​only 0.4㎡. This style of carbon capture membrane assembly consumes very little mixed gas during the test, and can be fully satisfied by using one nitrogen cylinder and one carbon dioxide cylinder.

[0013] Therefore, the carbon capture membrane testing device provided by the present invention is particularly suitable for the test stage in the laboratory and can provide the required test parameters for the research and development of the carbon capture membrane.

[0014] In addition, the testing device for the carbon capture membrane according to the present invention may also have the following additional technical features:

[0015] In some embodiments of the present invention, the carbon capture membrane testing device further comprises a temperature detection component and a humidity detection component, and the temperature detection component and the humidity detection component are both provided upstream of the raw gas inlet and downstream of the product gas outlet.

[0016] In the test device of the carbon capture membrane, a temperature detection component and a humidity detection component are set to detect whether the test environment meets the environmental use requirements of the carbon capture membrane. In particular, for membrane components that capture carbon in harsh environments, temperature detection and humidity detection can more realistically simulate the use environment.

[0017] In some embodiments of the present invention, the testing device for the carbon capture membrane further comprises a pressure detection assembly, wherein the pressure detection assembly is provided at the raw gas inlet; and / or, the pressure detection assembly is provided at the product gas outlet; and / or, the pressure detection assembly is provided at the retained gas outlet.

[0018] In order to meet the testing requirements under various pressure environments, a pressure detection component is also provided in the testing device. The pressure detection components are arranged at different positions of the carbon capture membrane. The conditions of the membrane component before and after carbon capture can be known, thereby improving the accuracy of the test results.

[0019] In some embodiments of the present invention, the carbon capture membrane testing device comprises:

[0020] a first carbon capture membrane assembly, the first carbon capture membrane assembly comprising a first feed gas inlet, a first product gas outlet, and a first retentate gas outlet;

[0021] a second carbon capture membrane assembly, the second carbon capture membrane assembly comprising a second feed gas inlet, a second product gas outlet, and a second retentate gas outlet;

[0022] The first retained gas outlet is connected to the second raw material gas inlet, and the first product gas outlet, the second product gas outlet and the second retained gas outlet are connected to the exhaust pipeline through the mutually independent exhaust branches.

[0023] In the testing device for the carbon capture membrane provided by the present invention, the first carbon capture membrane assembly and the carbon capture membrane assembly can also be arranged in parallel to perform two carbon captures on the mixed gas with a preset carbon dioxide concentration, wherein after the first carbon capture, the concentration of carbon dioxide in the mixed gas entering the second raw material inlet is appropriately reduced, and during the second carbon capture process, the corresponding test parameters are obtained and the carbon recovery rate of the carbon capture membrane is calculated, and its accuracy will be improved accordingly.

[0024] In some embodiments of the present invention, the flow control assembly comprises a throttle valve, and the throttle valve is arranged downstream of the second trapped gas outlet.

[0025] In the testing device for the carbon capture membrane in this embodiment, the recovery rate can be reversely controlled by controlling the throttle valve, thereby obtaining the use effect of the carbon capture membrane under different conditions.

[0026] In some embodiments of the present invention, the flow control assembly includes: a first thermal mass flow meter, a second thermal mass flow meter, and a third thermal mass flow meter;

[0027] The first thermal mass flow meter is arranged upstream of the first raw gas inlet, the second thermal mass flow meter is arranged upstream of the second raw gas inlet, and the third thermal mass flow meter is arranged downstream of the second product gas outlet.

[0028] The carbon capture membrane test device in this embodiment uses multiple thermal mass flow meters, which can measure the gas flow more accurately. The thermal mass flow meter measures the gas mass flow by changing the temperature distribution of the capillary tube based on the gas flow passing through the capillary tube and changing the temperature difference between the upstream and downstream. Since the upstream and downstream temperature difference always reflects the instantaneous flow of the gas flow in real time, it is particularly suitable for precise measurement and control of gas flow in process control. Its flow accuracy is not affected by gas pressure and ambient temperature, which is different from the volumetric flow meter.

[0029] In some embodiments of the present invention, the carbon dioxide concentration detection component is provided upstream of the first raw gas inlet, the carbon dioxide concentration detection component is provided upstream of the second raw gas inlet, and the carbon dioxide concentration detection component is provided downstream of the second product gas outlet.

[0030] The carbon dioxide concentration detection component is provided upstream of the first raw gas inlet, so as to determine whether the mixed gas entering the test environment contains a preset concentration of carbon dioxide to avoid excessively high or low carbon dioxide concentration in the mixed gas. The carbon dioxide concentration detection component is provided upstream of the second raw gas inlet and downstream of the second product gas outlet, so as to obtain the recovery rate in the second carbon capture stage.

[0031] In some embodiments of the present invention, the carbon capture membrane testing device further comprises a heating component and a humidifying component, wherein the heating component and the humidifying component are arranged on a communication pipe between the first trapped gas outlet and the second feed gas inlet.

[0032] In the second carbon capture stage, the temperature and humidity of the mixed gas entering the second raw material inlet are controlled by the heating component and the humidifying component, so that the test results can be obtained more accurately.

[0033] In some embodiments of the present invention, the gas distribution assembly includes a nitrogen bottle, a carbon dioxide bottle, and a mixed gas bottle, the gas outlet of the nitrogen bottle and the gas outlet of the carbon dioxide bottle are arranged in parallel and connected to the gas inlet of the mixed gas bottle, and the outlet of the mixed gas bottle is connected to the raw gas inlet.

[0034] In some embodiments of the present invention, the carbon dioxide and the nitrogen are mixed in a ratio of 15% to 70% and then introduced into the raw gas inlet.

[0035] Since the carbon capture membrane testing device provided by the present invention is used in the test phase, the use of nitrogen cylinders and carbon dioxide cylinders can meet the requirements of the mixed gas required for the test. Preparing the mixed gas according to the preset ratio can improve the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0037] Figure 1 A flow chart of a gas distribution assembly of a testing device for a carbon capture membrane of the present invention;

[0038] Figure 2 A flow chart of an embodiment of a testing device for a carbon capture membrane of the present invention;

[0039] Figure 3 A flow chart of another embodiment of a testing device for a carbon capture membrane of the present invention;

[0040] Figure 4 These are technical parameters obtained during the testing process of the testing device for the carbon capture membrane of the present invention.

[0041] The reference numerals are as follows:

[0042] FL01, thermal mass flow meter; FL02, thermal mass flow meter; FL03, thermal mass flow meter; FL04, thermal mass flow meter; FL05, thermal mass flow meter;

[0043] CM01, carbon dioxide concentration detection component; CM02, carbon dioxide concentration detection component; CM03, carbon dioxide concentration detection component;

[0044] PT01, pressure detection component; PT02, pressure detection component; PT03, pressure detection component; PT04, pressure detection component; PT05, pressure detection component; PT06, pressure detection component; PT1, pressure detection component; PT2, pressure detection component;

[0045] TAHM01, temperature and humidity detection component; TAHM02, temperature and humidity detection component; TAHM03, temperature and humidity detection component; TT, temperature detection component; HT, humidity detection component;

[0046] PRV01, pressure regulating valve; PRV02, pressure regulating valve; PRV03, pressure regulating valve; PRV04, pressure regulating valve; PRV05, pressure regulating valve;

[0047] CRV01, one-way valve; CRV02, one-way valve;

[0048] QF01, ball valve; QF02, ball valve; QF03, ball valve; QF04, ball valve; QF05, ball valve; QF06, ball valve; QF07, ball valve; QF08, ball valve;

[0049] SV01, safety valve;

[0050] L01, flow meter; L02, flow meter; L03, flow meter;

[0051] F01, filter; F02, filter;

[0052] M01, first carbon capture membrane assembly; M02, second carbon capture membrane assembly;

[0053] J01, throttle valve;

[0054] TT01, humidification component; TT02, heating component;

[0055] 100. Carbon dioxide cylinder; 200. Nitrogen cylinder; 300. Mixed gas cylinder; 400. Exhaust pipe. DETAILED DESCRIPTION

[0056] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0057] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0058] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0059] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0060] It should be noted that "distal" and "proximal" are used as directional terms, which are commonly used terms in the field of interventional medical devices, where "distal" refers to the end away from the operator during surgery, and "proximal" refers to the end close to the operator during surgery. Axial refers to the direction parallel to the line connecting the distal center and the proximal center of the medical device; radial refers to the direction perpendicular to the above axial direction.

[0061] An embodiment of the testing device for the carbon capture membrane of the present invention is given below in conjunction with the accompanying drawings. The accompanying drawings and embodiments are only used to explain the present invention and should not be construed as limiting the present invention.

[0062] Figure 1 A flow chart of the gas distribution assembly of the carbon capture membrane testing device of the present invention; Figure 1 As shown, the gas distribution assembly includes a carbon dioxide bottle 100, a nitrogen bottle 200, and a mixed gas bottle 300. The gas outlet of the carbon dioxide bottle 100 and the gas outlet of the nitrogen bottle 200 are arranged in parallel and are both connected to the gas inlet of the mixed gas bottle 300, so that carbon dioxide and nitrogen can be placed in the mixed gas bottle 300 in a certain proportion to obtain a mixed gas with a preset carbon dioxide concentration required for the carbon capture membrane test. The mixed gas bottle is provided with an outlet, which leads to the raw gas inlet of the carbon capture membrane assembly.

[0063] In order to monitor the pressure of the gas, the mixed gas cylinder 300 is provided with a pressure detection component PT01, and the carbon dioxide cylinder 100 and the nitrogen cylinder 200 are both provided with pressure detection components PT1 and PT2. The pressure of carbon dioxide and nitrogen provided by the pressure detection components PT1 and PT2 can be monitored in real time. The pressure of the raw gas inlet leading to the carbon capture membrane assembly can be monitored in real time by the pressure detection component PT01, that is, the output pressure of the mixed gas cylinder 300. Among them, the pressure detection component PT01, the pressure detection component PT1 and the pressure detection component PT2 can all use pressure transmitters.

[0064] In some embodiments of the present invention, the carbon dioxide and the nitrogen are mixed in a ratio of 15% to 70% and then placed into the raw gas inlet. In order to control the mixing ratio of carbon dioxide and nitrogen, a thermal mass flowmeter FL01 is provided on the connecting branch between the carbon dioxide bottle 100 and the mixed gas bottle 300, and the flow of carbon dioxide can be monitored by the thermal mass flowmeter FL01. A ball valve QF01 and a filter F01 are also provided at the outlet of the carbon dioxide bottle, so that the flow of carbon dioxide output to the mixed gas bottle can be stably controlled.

[0065] A thermal mass flowmeter FL02 is provided on the connecting branch between the nitrogen cylinder and the mixed gas cylinder. The flow rate of nitrogen can be monitored by the thermal mass flowmeter FL02. A ball valve QF02 and a filter F02 are also provided at the outlet of the nitrogen cylinder, so as to stably control the flow rate of nitrogen output to the mixed gas cylinder, and to place carbon dioxide and nitrogen into the mixed gas cylinder in a predetermined ratio, and to control the mass flow rates of carbon dioxide and nitrogen respectively.

[0066] In order to prevent the mixed gas in the mixed gas cylinder 300 from flowing back, a one-way valve CKV01 is provided on the connecting branch between the carbon dioxide cylinder 100 and the mixed gas cylinder 300, and a one-way valve CKV02 is provided on the connecting branch between the nitrogen cylinder and the mixed gas cylinder.

[0067] The mixed gas cylinder 300 is also provided with a connection outlet, which is connected to the exhaust pipe 400 through a ball valve QF02; the mixed gas cylinder 300 is also provided with a safety valve SV01.

[0068] A ball valve QF04 and a pressure regulating valve PRV01 are also provided on the connecting pipeline between the mixed gas cylinder 300 and the raw gas inlet of the carbon capture membrane assembly.

[0069] In the gas distribution assembly provided by the present invention, the gas can be Figure 1It flows in the direction indicated by the arrow. It should be emphasized that by setting up the thermal mass flowmeter FL01 and the thermal mass flowmeter FL02, the mass flow rates of carbon dioxide and nitrogen can be accurately detected, thereby ensuring that the mixed gas delivered to the carbon capture membrane assembly is more stable and meets the test requirements.

[0070] Figure 2 A flow chart of an embodiment of a testing device for a carbon capture membrane of the present invention; Figure 2 As shown, the testing device for the carbon capture membrane in this embodiment uses a second carbon capture membrane assembly M02 for testing, wherein the second carbon capture membrane assembly M02 is provided with a second feed gas inlet, a second product gas outlet and a second retained gas outlet.

[0071] A humidifying component TT01 and a heating component TT02 are provided on the branch connected to the second raw gas inlet, and the temperature and humidity of the mixed gas entering the second raw gas inlet can be controlled by the humidifying component TT01 and the heating component TT02.

[0072] A branch line connected to the second raw gas inlet is provided with a carbon dioxide concentration detection component CM02, which is used to detect the carbon dioxide concentration in the mixed gas entering the second raw gas inlet. The branch line is connected to the exhaust pipe 400, and a pressure regulating valve PRV03 and a filter 02, as well as a temperature and humidity detection component TAHM02 are also provided on the branch line. The temperature and humidity detection component TAHM02 includes a temperature detection component TT and a humidity detection component HT. The above components are used to detect the technical parameters of the mixed gas entering the second raw gas inlet to ensure that the mixed gas passing through the carbon capture membrane meets the test requirements.

[0073] A thermal mass flow meter FL04 and a pressure detection component PT05 are also provided upstream of the second raw gas inlet.

[0074] A thermal mass flowmeter FL05 is provided on a branch connected to the second product gas outlet, and a carbon dioxide concentration detection component CM03 is provided on a branch downstream of the thermal mass flowmeter FL05. The outlet of the thermal mass flowmeter FL05 and the outlet of the carbon dioxide concentration detection component CM03 are both connected to the exhaust pipe 400.

[0075] Among them, a pressure detection component PT06 and a pressure regulating valve PRV05 are also provided downstream of the thermal mass flowmeter FL05.

[0076] A pressure regulating valve PRV04 and a filter 03, as well as a temperature and humidity detection component TAHM02 are provided on the branch where the carbon dioxide concentration detection component CM03 is located. The temperature and humidity detection component TAHM02 includes a temperature detection component TT and a humidity detection component HT.

[0077] The carbon recovery rate of the second carbon capture membrane assembly is calculated by the parameters monitored by the thermal mass flow meter FL04 and the carbon dioxide concentration detection assembly CM02, and the parameters monitored by the thermal mass flow meter FL05 and the carbon dioxide concentration detection assembly CM03.

[0078] A throttle valve J01 is provided on a branch connected to the second retained gas outlet, and the outlet of the throttle valve is connected to the exhaust pipe 400. The throttle valve J01 can be used to control the carbon recovery rate of the second carbon capture membrane assembly under different conditions, so as to obtain accurate data of the carbon capture membrane.

[0079] Figure 3 A flow chart of another embodiment of the testing device for the carbon capture membrane of the present invention; Figure 3 As shown, the testing device of the carbon capture membrane in this embodiment is provided with a first carbon capture membrane assembly M01 and a second carbon capture membrane assembly M02, wherein the first carbon capture membrane assembly M01 and the second carbon capture membrane assembly M02 are arranged in series.

[0080] Specifically, the first carbon capture membrane assembly M01 includes a first raw gas inlet, a first product gas outlet and a first retained gas outlet; the first retained gas outlet is connected to the second raw gas inlet, and the first product gas outlet, the second product gas outlet and the second retained gas outlet are connected to the exhaust pipe through the independent exhaust branches.

[0081] In this embodiment, the components and connecting branches connected to the second carbon capture membrane assembly M02 are Figure 2 The connection method of the second carbon capture membrane assembly M02 is the same as that of the second carbon capture membrane assembly M02, which will not be described in detail. Figure 3 The connection method of the first carbon capture membrane assembly M01 is described below.

[0082] like Figure 3 As shown, the gas outlet of the mixed gas bottle 400 is connected to the first raw gas inlet of the first carbon capture membrane assembly M01, and a thermal mass flowmeter FL03 and a pressure detection assembly PT02 are provided upstream of the first raw gas inlet.

[0083] A carbon dioxide concentration detection component CM02 is provided on a branch line connected to the first raw gas inlet of the first carbon capture membrane component M01, wherein a pressure regulating valve PRV02 and a filter 01, as well as a temperature and humidity detection component TAHM01 are also provided on the branch line. The temperature and humidity detection component TAHM01 includes a temperature detection component TT and a humidity detection component HT.

[0084] The first trapped gas outlet of the first carbon capture membrane assembly M01 is connected to the second feed gas inlet of the second carbon capture membrane assembly M02. A ball valve QF05 and a pressure detection assembly PT04 are provided on the connected pipeline.

[0085] A ball valve QF08 and a pressure detection assembly PT03 are provided on a branch line connected to the first product gas outlet of the first carbon capture membrane assembly M01 , and the branch line is connected to the exhaust pipe 400 .

[0086] The carbon capture membrane testing device in this embodiment, after the first retentate gas outlet of the first carbon capture membrane assembly M01, the mixed gas is processed by the heating assembly and the humidifying assembly, and then connected to the second feed gas inlet of the second carbon capture membrane assembly M02.

[0087] In some embodiments of the present invention, the gas distribution assembly includes a nitrogen bottle, a carbon dioxide bottle, and a mixed gas bottle, the gas outlet of the nitrogen bottle and the gas outlet of the carbon dioxide bottle are arranged in parallel and connected to the gas inlet of the mixed gas bottle, and the outlet of the mixed gas bottle is connected to the raw gas inlet.

[0088] Figure 4 These are the technical parameters obtained during the testing process of the carbon capture membrane testing device of the present invention. Figure 4 The technical parameters shown are Figure 1 The gas distribution components and Figure 3 The results were obtained by connecting the test device of the carbon capture membrane in the reactor to the test device.

[0089] The working pressure of the above-mentioned connecting equipment should not be greater than 5.0kgf, the long-term operating environment temperature should be 18℃~38℃, the storage temperature should be 5℃~38℃, and the long-term operating relative humidity should be 35%~60%RH.

[0090] It should be noted that when the temperature and humidity of the external environment are much lower than the temperature and humidity of the mixed gas after passing through the humidification component and the heating component, condensation may form inside the thermal mass flowmeter, which will affect the accuracy of the test work and the life of components and parts. Therefore, it should be ensured that the temperature and humidity between the external environment and the mixed gas are not too different.

[0091] The testing process of the above equipment is as follows:

[0092] (1) The thermal mass flowmeters MFC2 (corresponding to FL02) and MFC1 (corresponding to FL01) are appropriately matched and set to flow rates of 12SLM (Standard Liter per Minute) and 2SLM (Standard Liter per Minute), respectively. The actual flow rates are 12.0025SLM and 1.9980SLM. Theoretically, the carbon dioxide concentration should be 14.286%. The actual concentration at the first raw gas inlet of the first carbon capture membrane module M01 measured by the carbon dioxide concentration detection component CM01 is 14.29%.

[0093] (2) Thermal mass flowmeters MFC3 (corresponding to FL03), MFC4 (corresponding to FL04), and MFC5 (corresponding to FL05). The set flow rates of the above three thermal mass flowmeters are set to values ​​consistent with their range sizes. At this time, their openings can be maintained at 100%, so that they can be used as flowmeters to measure the actual flow rate of the pipeline.

[0094] (3) Set the pressure of the mixed gas bottle to 3.5Kgf. When the pressure is greater than 3.5Kgf, stop distributing gas. When the pressure is less than 3.5-0.5=3Kgf, start distributing gas.

[0095] (4) The mixed gas coming out of the mixed gas bottle is reduced to 3 kgf by a pressure reducing valve and sent to the first raw gas inlet of the first carbon capture membrane module M01. The actual measured pressure at the first raw gas inlet of the first carbon capture membrane module M01 is 2.98 kgf measured by the pressure detection component PT02.

[0096] (5) The mixed gas at the first raw gas inlet of the first carbon capture membrane module M01 has not been humidified and heated, and its temperature is 21.8 degrees Celsius and its humidity is 36.4%. After humidification and heating, the actual measured temperature at the second raw gas inlet of the second carbon capture membrane module M02 is 30.5 degrees Celsius and its humidity is 52.6%.

[0097] (6) After passing through the first carbon capture membrane module M01, the carbon concentration in the mixed gas dropped from 14.29% to 7.74%.

[0098] (7) After passing through the second carbon capture membrane module M02, the carbon concentration in the mixed gas is enriched from 7.74% of the raw gas to 25.28% of the product gas.

[0099] (8) The carbon dioxide content at the second raw gas inlet of the second carbon capture membrane assembly M02 is 6.8*7.74%=0.5263, and the carbon dioxide content at the second product gas outlet of the second carbon capture membrane assembly M02 is 1.3*25.28%=0.3286, so the total recovery rate can be obtained as 0.3286 / 0.5263=62.43%.

[0100] The carbon capture membrane testing device in this embodiment uses a first carbon capture membrane assembly M01 and a second carbon capture membrane assembly M02 in series to capture carbon dioxide in the mixed gas twice to obtain technical parameters of the carbon capture membrane.

[0101] It is also possible to set up multiple carbon capture membrane assemblies in the carbon capture membrane test device. According to actual needs, multiple carbon capture membrane assemblies can be set "in series" or "in parallel" to test the technical parameters of the carbon capture membrane under different conditions.

[0102] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A testing device for a carbon capture membrane, characterized in that: The testing device of the carbon capture membrane comprises: At least one carbon capture membrane assembly, each of which is provided with a carbon capture membrane, and each of which is provided with a feed gas inlet, a product gas outlet, and a retained gas outlet; A gas distribution component, the gas distribution component is used to provide a mixed gas containing a preset carbon dioxide concentration to the raw material gas inlet; An exhaust pipeline, wherein the product gas outlet and the trapped gas outlet are respectively connected to the exhaust pipeline through mutually independent exhaust branches; A flow control component and a carbon dioxide concentration detection component are provided upstream of the raw material gas inlet and downstream of the product gas outlet.

2. The carbon capture membrane testing device according to claim 1, characterized in that: The testing device for the carbon capture membrane further comprises a temperature detection component and a humidity detection component, and the temperature detection component and the humidity detection component are both arranged upstream of the raw material air inlet and downstream of the product gas outlet.

3. The carbon capture membrane testing device according to claim 1, characterized in that: The testing device for the carbon capture membrane further comprises a pressure detection assembly, which is provided at the feed gas inlet; and / or, the product gas outlet is provided with the pressure detection assembly; and / or, the trapped gas outlet is provided with a pressure detection assembly.

4. The carbon capture membrane testing device according to any one of claims 1 to 3, characterized in that: The testing device of the carbon capture membrane comprises: a first carbon capture membrane assembly, the first carbon capture membrane assembly comprising a first feed gas inlet, a first product gas outlet, and a first retentate gas outlet; a second carbon capture membrane assembly, the second carbon capture membrane assembly comprising a second feed gas inlet, a second product gas outlet, and a second retentate gas outlet; The first retained gas outlet is connected to the second raw material gas inlet, and the first product gas outlet, the second product gas outlet and the second retained gas outlet are connected to the exhaust pipeline through the mutually independent exhaust branches.

5. The carbon capture membrane testing device according to claim 4, characterized in that: The flow control assembly includes a throttle valve disposed downstream of the second trapped gas outlet.

6. The carbon capture membrane testing device according to claim 4, characterized in that: The flow control assembly includes: a first thermal mass flow meter, a second thermal mass flow meter and a third thermal mass flow meter; The first thermal mass flow meter is arranged upstream of the first raw gas inlet, the second thermal mass flow meter is arranged upstream of the second raw gas inlet, and the third thermal mass flow meter is arranged downstream of the second product gas outlet.

7. The carbon capture membrane testing device according to claim 6, characterized in that: The carbon dioxide concentration detection component is provided upstream of the first raw gas inlet, the carbon dioxide concentration detection component is provided upstream of the second raw gas inlet, and the carbon dioxide concentration detection component is provided downstream of the second product gas outlet.

8. The carbon capture membrane testing device according to claim 4, characterized in that: The testing device for the carbon capture membrane further comprises a heating component and a humidifying component, wherein the heating component and the humidifying component are arranged on a communication pipeline between the first trapped gas outlet and the second raw gas inlet.

9. The carbon capture membrane testing device according to any one of claims 1 to 3, characterized in that: The gas distribution assembly includes a nitrogen bottle, a carbon dioxide bottle, and a mixed gas bottle. The gas outlet of the nitrogen bottle and the gas outlet of the carbon dioxide bottle are arranged in parallel and are connected to the gas inlet of the mixed gas bottle. The outlet of the mixed gas bottle is connected to the raw gas inlet.

10. The carbon capture membrane testing device according to claim 9, characterized in that: The carbon dioxide and the nitrogen are mixed in a ratio of 15% to 70% and then placed into the raw gas inlet.

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