System and method for detecting service life of adsorbent

Abstract

The invention discloses an adsorbent service life detection system and method, the detection system comprises a gas source, a booster pump, a supercharging device, an adsorption device, a first gas collection port, a second gas collection port, a controller, a temperature transmitter and a pressure transmitter, and a sixth control valve is arranged at the gas inlet end of the booster pump; the first control valves are arranged at the air inlet end and the air outlet end of the supercharging device and the air inlet end and the air outlet end of the adsorption device respectively, and the first control valves and the sixth control valves are electrically connected with the controller respectively, so that automatic inflation and deflation operation of the detection system is realized; the temperature transmitter and the pressure transmitter are arranged to monitor temperature and pressure changes of the detection system, temperature and pressure data are collected through the controller, and automatic detection of the service life of the adsorbent in the adsorption equipment is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of adsorbent life detection, and in particular to an adsorbent life detection system and an adsorbent life detection method. Background Art

[0002] Adsorbents (such as molecular sieves, activated carbon, and metal-organic frameworks) are widely used in high-pressure gas storage, purification, and separation. The adsorption life of adsorbents directly impacts the economics and safety of equipment, and their performance degradation patterns must be verified through high-pressure cycling testing.

[0003] Traditional adsorbent life testing is generally performed manually through physical property testing (such as changes in weight, color, and integrity) and adsorption capacity testing. These traditional testing methods rely on manual operation and have the following problems: (1) Manual operation in a high-pressure environment is risky and inefficient; (2) It is difficult to accurately control the pressure, temperature, and number of replays during the inflation and deflation process; and (3) Data collection has not yet achieved fully automatic recording. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present application is to provide an adsorbent life detection system and method, aiming to realize automated detection of adsorbent life.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions: On the one hand, the present application discloses an adsorbent life detection system, which includes a gas source, a booster pump, a booster device, an adsorption device, a first gas collection port, a second gas collection port, a controller, a temperature transmitter and a pressure transmitter; the gas inlet end of the booster pump is connected to the gas source, the gas inlet end of the booster device is connected to the gas outlet end of the booster pump, the booster device is used to dope the gas entering the booster device, the gas inlet end of the adsorption device is connected to the gas outlet end of the booster pump and the gas outlet end of the booster device respectively, and the adsorption The adsorbent is provided in the attached device; the first gas collection port is provided at the air inlet end of the adsorption device, the second gas collection port is provided at the air outlet end of the adsorption device, the air inlet end of the booster pump is provided with a sixth control valve, the air inlet end and air outlet end of the booster device, the air inlet end and air outlet end of the adsorption device are respectively provided with a first control valve, the first control valve and the sixth control valve are respectively electrically connected to the controller, the temperature transmitter and the pressure transmitter are respectively provided between the booster device and the booster pump, and are respectively electrically connected to the controller. In some embodiments of the present application, the first control valve includes a pneumatic valve, which is provided on a connecting pipeline of the detection system, and the controller can control the gas flow in the detection system through the pneumatic valve.

[0006] In some embodiments of the present application, the gas source includes a driving gas source, a nitrogen gas source and a hydrogen gas source; the driving gas source is connected to the air inlet end of the booster pump through a first pipeline, the first pipeline is provided with the sixth control valve, the nitrogen gas source is connected to the air inlet end pipeline of the booster pump, and a fourth control valve is provided on the connecting pipeline between the nitrogen gas source and the booster pump, the hydrogen gas source is connected to the air inlet end pipeline of the booster pump, and a fifth control valve is provided on the connecting pipeline between the hydrogen gas source and the booster pump.

[0007] In some embodiments of the present application, the fourth control valve and the fifth control valve include a pressure regulating valve and a shut-off valve, respectively.

[0008] In some embodiments of the present application, the detection system includes a drying filter, which is arranged in the first pipeline and located between the driving gas source and the sixth control valve.

[0009] In some embodiments of the present application, the detection system includes a first vent pipe and a second vent pipe; the first vent pipe is connected to the booster pump, and a second control valve is provided on the first vent pipe, the second vent pipe is connected to the air outlet end of the adsorption device, and a third control valve is provided on the second vent pipe, and the third control valve is provided at the end of the air outlet end of the adsorption device away from the first control valve of the adsorption device.

[0010] In some embodiments of the present application, the controller includes a cycle counter, which is used to collect the number of times the adsorption device is filled and deflated.

[0011] In some embodiments of the present application, a liquid gas contact medium is provided in the boosting device, and the gas entering the boosting device can contact the gas contact medium, so that the gas discharged from the boosting device can carry the gas contact medium.

[0012] Another aspect of the present application further provides a method for detecting the life of an adsorbent, wherein the method adopts the detection system as described in any one of the above items, and the method comprises the following steps: Step 1: Check the air tightness of the detection system and stabilize the pressure of the detection system at a set value; Step 2: Open the first control valve at the air inlet of the adsorption device, close the first control valve at the air outlet of the adsorption device, and introduce the gas discharged from the booster device into the adsorption device. When the pressure in the adsorption device increases to a certain value, open the first control valve at the air outlet of the adsorption device, and repeat this step multiple times. Step 3: Collect the gas purified by the adsorption device, close the first control valves at the gas inlet and gas outlet of the adsorption device respectively, and then collect the gas discharged from the boosting device but not entering the adsorption device; Step 4, venting the gas in the detection system; Step 5: Increase the pressure of the booster device to a set value and check the air tightness of the booster device; Step 6: Stabilize the pressure of the boosting device, maintain it for a certain period of time, and then open the first control valve at the gas outlet of the adsorption device to discharge the gas from the detection system; Step 7: Repeat steps 5 and 6 above, and collect the gas discharged from the first gas collection port and the second gas collection port in stages respectively; Step 8: When the adsorption efficiency of the adsorbent in the adsorption device drops to a set value, the detection system automatically stops running and generates a report on the lifespan of the adsorbent.

[0013] In some embodiments of the present application, before step 1, the following steps are further included: A gas contact medium is added to the pressurizing device, and an adsorbent is filled into the adsorption device.

[0014] In some embodiments of the present application, step 1 specifically includes: Step 101: nitrogen is introduced into the detection system to check the air tightness of the detection system. After the air tightness test is completed, the detection system is depressurized to normal pressure; Step 102: continuously introducing nitrogen into the detection system until the oxygen content of the gas in the detection system is lower than 0.5%; Step 103: closing the first control valves at the air inlet and outlet of the adsorption device to place the adsorbent in the adsorption device in a nitrogen-sealed state; Step 104: introducing hydrogen into the detection system to replace the gas in the detection system. When the pressure in the detection system reaches 5 MPa, the gas is evacuated to 0.5 MPa. This step is repeated multiple times. Step 105: introducing hydrogen into the detection system to gradually increase the pressure in the detection system, and checking the airtightness of the detection system step by step; Step 106: When the pressure in the boosting device rises to the set value and stabilizes, the gas in the connecting pipelines of the air inlet and air outlet of the boosting device is evacuated, and the pressure in the boosting device is maintained at the set value for a certain period of time.

[0015] In some embodiments of the present application, step 104 is repeated no less than 5 times.

[0016] In some embodiments of the present application, step 105 specifically includes: introducing hydrogen into the detection system so that the pressure in the detection system gradually increases, and performing an air tightness test on the detection system every time the pressure in the detection system increases by 10 MPa.

[0017] In some embodiments of the present application, in step 106, the pressure in the boosting device is maintained at a set value and maintained for at least 24 hours.

[0018] In some embodiments of the present application, step 2 is repeated no less than 5 times.

[0019] In some embodiments of the present application, in step 6, the pressure of the boosting device is maintained at a set value for at least 24 hours, and the first control valve at the gas outlet of the adsorption device is opened to discharge the gas in the detection system.

[0020] Beneficial effects: The present application provides an adsorbent life detection system, which realizes the automatic operation of charging and discharging gas in the detection system by setting a controller and setting a sixth control valve at the air inlet end of the booster pump, and respectively setting a first control valve at the air inlet end and air outlet end of the booster device and the air inlet end and air outlet end of the adsorption device, and electrically connecting the first control valve and the sixth control valve to the controller. By setting a temperature transmitter and a pressure transmitter to monitor the temperature and pressure changes of the detection system, and collecting temperature and pressure data through the controller, the automatic detection of the adsorbent life in the adsorption device is realized.

[0021] The adsorbent life detection method provided in the present application is centrally controlled by a controller, has high controllability, and has low dependence on manual operation, and can realize automatic detection of the adsorbent life in the adsorption equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of an adsorbent life detection system provided in one embodiment of the present application.

[0023] Explanation of the main component symbols: 1. Driving gas source; 2. Nitrogen gas source; 3. Hydrogen gas source; 4. Booster pump; 5. Booster equipment; 51. Gas contact medium; 6. Adsorption equipment; 7. Controller; 8. First control valve; 9. First gas collection port; 10. Second gas collection port; 11. Temperature transmitter; 12. Pressure transmitter; 13. First pipeline; 14. Fourth control valve; 15. Fifth control valve; 141 / 151, Pressure regulating valve; 142 / 152, Stop valve; 18. Dry filter; 19. First vent pipe; 20. Second vent pipe; 21. Second control valve; 22. Third control valve; 23. Sixth control valve. DETAILED DESCRIPTION

[0024] This application provides an adsorbent life detection system and method. To clarify the purpose, technical solutions, and effects of this application, the following describes this application in further detail with reference to the accompanying drawings and examples. It should be understood that the specific examples described herein are intended only to illustrate this application and are not intended to limit this application.

[0025] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., which indicate orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, and a specific orientation structure and operation. Therefore, they cannot be understood as limitations on this application. In addition, "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "multiple" means two or more.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0027] See also Figure 1 The present application provides an adsorbent life detection system, which is used for automatic detection of adsorbent life, especially automatic cycle verification of adsorbent life under high pressure environment.

[0028] Specifically, the detection system includes a gas source, a booster pump 4 , a booster device 5 , an adsorption device 6 , a first gas collection port 9 , a second gas collection port 10 , a controller 7 , a temperature transmitter 11 and a pressure transmitter 12 .

[0029] The inlet of the booster pump 4 is connected to the gas source and is used to pressurize the gas entering the downstream booster device 5 and adsorption device 6, thereby maintaining a high-pressure environment in the downstream devices and achieving pressure changes in the gas environment of the downstream devices. The inlet of the booster device 5 is connected to the outlet of the booster pump 4 to receive the gas pressurized by the booster pump 4. The booster device 5 is used to dope the gas entering it, so that the gas inside the booster device 5 carries impurities, simulating an actual gas production environment. The inlet of the adsorption device 6 is connected to the outlet of the booster pump 4 and the outlet of the booster device 5, respectively, and the adsorption device 6 is equipped with an adsorbent. A first gas collection port 9 is located at the inlet of the adsorption device 6 for collecting gas before purification. A second gas collection port 10 is located at the outlet of the adsorption device 6 for collecting gas after purification by the adsorption device 6. A temperature transmitter 11 and a pressure transmitter 12 are located between the booster device 5 and the booster pump 4, respectively, to monitor the pressure of the gas after passing through the booster pump 4. Temperature transmitter 11 and pressure transmitter 12 are respectively installed at the air inlet of boosting device 5 to monitor the temperature and pressure at the air inlet of boosting device 5. A sixth control valve 23 is installed at the air inlet of boosting pump 4. First control valves 8 are respectively installed at the air inlet and outlet of boosting device 5 and the air inlet and outlet of adsorption device 6. First control valve 8, sixth control valve 23, temperature transmitter 11, and pressure transmitter 12 are respectively electrically connected to controller 7.

[0030] In the above description, the fluid discharged from the booster device 5 enters the adsorption device 6, where it is purified by the adsorbent. The purified gas is collected at the second gas collection port 10, and the unpurified gas is collected at the first gas collection port 9. By comparing the composition of the gas collected at these two locations, the gas purification effect of the adsorbent can be determined. The controller 7 centrally controls the opening and closing of multiple first control valves 8 and sixth control valves 23 in the system, enabling automatic cycle operation of the detection system, thereby automatically detecting the adsorbent lifespan, with low reliance on manual operation and high controllability.

[0031] In some embodiments, the first control valve 8 comprises a pneumatic valve. The pneumatic valve is provided on the connecting pipeline of the detection system, and the controller 7 can control the gas flow in the detection system through the pneumatic valve to realize the automatic cycle of inflation and deflation of the detection system.

[0032] In some embodiments, the gas source includes a driving gas source 1. The driving gas source 1 is connected to the air inlet of the booster pump 4 via a first pipe 13. A sixth control valve 23 is provided on the first pipe 13. The sixth control valve 23 is electrically connected to the controller 7 to automatically switch the driving gas source 1 on and off. The driving gas source 1 can be a gas such as compressed air, nitrogen, or hydrogen. The sixth control valve 23 can be a solenoid valve.

[0033] A drying filter 18 is provided on the first pipe 13. The drying filter 18 is provided between the driving gas source 1 and the sixth control valve 23. The driving gas enters the booster pump 4 through the drying filter 18, thereby ensuring the dryness of the driving gas.

[0034] The gas source may include a nitrogen gas source 2. The nitrogen gas source 2 is connected to the air inlet pipeline of the booster pump 4. A fourth control valve 14 is provided on the connecting pipeline between the nitrogen gas source 2 and the booster pump 4. The nitrogen gas source 2 can be used to purify the internal environment of the system and reduce the oxygen content within the system.

[0035] The nitrogen gas source 2 can be a 12 MPa nitrogen cylinder. The nitrogen cylinder can include a pressure valve (not shown) and a safety pressure relief device (not shown) to ensure the safety of the cylinder.

[0036] The fourth control valve 14 may include a pressure regulating valve 141 and a shutoff valve 142. The pressure regulating valve 141 controls the output pressure of the nitrogen source 2, and the shutoff valve 142 controls the connection between the nitrogen source 2 and the booster pump 4.

[0037] The gas source may include a hydrogen source 3. The hydrogen source 3 can serve as a carrier for verifying the service life of the adsorbent. The hydrogen source 3 is connected to the inlet pipeline of the booster pump 4, and a fifth control valve 15 is provided on the connecting pipeline between the hydrogen source 3 and the booster pump 4. The hydrogen source 3 can enter the boosting device 5 or the adsorption device 6 after passing through the booster pump 4 to verify the airtightness of the booster device 5 or the adsorption device 6. In addition, the hydrogen source 3 can also first enter the booster device 5 for doping, and the doped hydrogen can be passed into the adsorption device 6 for purification to verify the service life of the adsorbent.

[0038] The hydrogen source 3 can be a 12 MPa hydrogen container. The fifth control valve 15 includes a pressure regulating valve 151 and a shutoff valve 152. The pressure regulating valve 151 controls the output pressure of the hydrogen source 3, while the shutoff valve 152 controls the connection between the hydrogen source 3 and the booster pump 4.

[0039] In some embodiments, the booster pump 4 can be a 100 MPa air-driven booster pump 4 to ensure that the compression effect of the booster pump 4 can meet the high pressure environment requirements of the downstream equipment of the system. For example, the booster pump 4 can be a Shandong Saisite STA series, STD series, or STT series, or a Jinan Hongsite H2TD60.

[0040] The booster pump 4 is connected to a first vent pipe 19. A second control valve 21 is provided on the first vent pipe 19. Second control valve 21 can be an electronic valve. Second control valve 21 is connected to a controller 7, which controls the opening and closing of second control valve 21 to automatically vent the booster pump 4.

[0041] In other embodiments, the second control valve 21 may also be a manual control valve, such as a stop valve, which controls the flow of the fluid in the pipeline through manual operation to achieve the draining of the booster pump 4.

[0042] The booster device 5 is provided with a liquid gas contact medium 51. The gas entering the booster device 5 can come into contact with the gas contact medium 51, so that the gas exiting the booster device 5 can carry the gas contact medium 51. After the doped gas enters the adsorption device 6, the gas contact medium 51 carried in the gas can be adsorbed by the adsorbent, thereby purifying the gas.

[0043] The gas contact medium 51 is an ionic liquid. Doping the gas entering the booster device 5 with this gas contact medium 51 fully simulates the changes in hydrogen composition and content caused by contact between hydrogen and the medium, thereby determining whether the downstream adsorption device 6 can purify the gas and adsorb impurities generated by the contact.

[0044] The boosting module comprises a driving gas source 1, a hydrogen source 3, a nitrogen source 2, a booster pump 4, and a boosting device 5, which is used to achieve a high-pressure environment in the adsorption device 6. The pressure transmitter 12 can record the pressure changes of the boosting device 5 in real time. The temperature transmitter 11 can also record the temperature changes of the boosting device 5 in real time.

[0045] The adsorption device 6 can operate under high pressure. In some embodiments, the working pressure of the adsorption device 6 can reach 150 MPa. A seamless pressure-bearing container is provided on the periphery of the adsorption device 6 to ensure that the adsorption device 6 can withstand higher pressure.

[0046] The adsorption device 6 is provided with a detachable adsorbent filling chamber inside, in which the adsorbent is filled. The detachable structure facilitates the replacement of the adsorbent.

[0047] Distributors can be provided at both ends of the inner cavity of the adsorption device 6. Providing distributors at both ends of the inner cavity of the adsorption device 6 can evenly distribute the fluid entering the adsorption device 6 throughout the entire device, ensuring sufficient contact between the fluid and the adsorbent, thereby improving the adsorption efficiency of the adsorbent.

[0048] A wire mesh may also be provided in the adsorption device 6. The wire mesh may be provided at both ends of the adsorbent filling cavity to fix the adsorbent.

[0049] The inlet and outlet of the adsorption device 6 can be configured with sealed end plugs, and the inlet and outlet of the adsorption device 6 are connected to the pipeline through the sealed end plugs to increase the airtightness of the adsorption device 6.

[0050] It is understandable that the adsorbent in the adsorption device 6 can effectively adsorb the gas contact medium 51 carried in the fluid, so as to ensure that the gas passing through the adsorption device 6 can be effectively purified.

[0051] The gas outlet end of the adsorption device 6 is connected to a second venting pipe 20. Through the second venting pipe 20, the gas in the adsorption device 6 can be released to reduce the gas pressure in the adsorption device 6.

[0052] A third control valve 22 is provided on the second vent pipe 20. The third control valve 22 is provided at the end of the first control valve 8 at the air outlet end of the adsorption device 6 away from the adsorption device 6, so that the second vent pipe 20 can be connected to the air outlet pipe of the adsorption device 6, thereby reducing the number of openings of the adsorption device 6 and improving the air tightness of the adsorption device 6.

[0053] In some embodiments, the third control valve 22 may be an electronic valve. The third control valve 22 is connected to the controller 7, and the controller 7 controls the opening and closing of the third control valve 22 to achieve automatic evacuation of the adsorption device 6.

[0054] In other embodiments, the third control valve 22 may also be a manual control valve, such as a stop valve, which controls the flow of the fluid in the second venting pipe 20 through manual operation to achieve the venting of the adsorption device 6.

[0055] Controller 7 can be a PLC controller. The detection system of the present application controls the opening and closing of the first control valve 8 and the sixth control valve 23 through the PLC controller, and collects temperature and pressure signals through the temperature transmitter 11 and the pressure transmitter 12, thereby implementing the automatic inflation, pressure maintenance, and deflation cycle logic. The first control valve 8 and the sixth control valve 23 can dynamically adjust the air circuit opening and closing according to the set pressure curve.

[0056] The controller 7 includes a cycle counter (not shown in the figure), which is used to collect the number of times the adsorption device 6 is filled and deflated, thereby recording the number of tests.

[0057] Another aspect of the present application is to provide a method for detecting the life of an adsorbent. The method employs the above-described detection system. The method comprises the following steps: S001 . Add a gas contact medium 51 to the pressurizing device 5 , and fill the adsorption device 6 with an adsorbent.

[0058] Specifically, the gas contact medium 51 can be measured with a suitable measuring tool according to the size of the opening of the boosting device 5, and the gas contact medium 51 can be slowly poured into the inside of the boosting device 5 through the connecting pipe above the boosting device 5, and then the connecting pipeline can be installed and restored.

[0059] The adsorbent can be added to the adsorbent filling chamber using a suitable measuring tool. The adsorbent specifications can include large ceramic balls, small ceramic balls and molecular sieves. The order of loading the adsorbent can be: first load the large ceramic balls, then load the small ceramic balls, then load the molecular sieve, then load the small ceramic balls, and finally load the large ceramic balls. After the adsorbent is loaded, the connecting pipes are installed and restored. This loading order allows the gaps in the adsorbent particles to change in layers, which not only allows the fluid to pass through the adsorbent evenly, but also ensures the adsorption effect of the adsorbent.

[0060] S1. Check the air tightness of the detection system and stabilize the pressure of the detection system at the set value to ensure the stability and reliability of the system operation.

[0061] Specifically, step S1 may include: A101. Introduce nitrogen into the detection system to check its air tightness. After the air tightness test, depressurize the detection system to normal pressure.

[0062] For example, dry, clean nitrogen can be introduced into the detection system, and the booster module can be immersed in water. If there are no visible bubbles in the water, the air tightness test is qualified. For the adsorption device 6 and its connecting pipes, a leak detection liquid can be applied to each joint and sealing part. If there are no visible bubbles, it is qualified.

[0063] A102. After the airtightness test is passed, nitrogen is continuously introduced into the detection system until the oxygen content of the gas in the detection system is less than 0.5%. By introducing nitrogen into the detection system, the oxygen content of the gas environment within the detection system is reduced, thereby improving the operating safety and adsorption efficiency of adsorption device 6 and protecting the adsorbent and equipment.

[0064] A103. Close the first control valves 8 at the air inlet and outlet ends of the adsorption device 6 respectively, so that the adsorbent in the adsorption device 6 is in a nitrogen-sealed state, further reducing the air content in the adsorption device 6 and improving the safety of the equipment operation.

[0065] A104. Introduce hydrogen into the detection system to replace the gas inside the detection system. When the pressure inside the detection system reaches 5MPa, evacuate the gas to 0.5MPa. Repeat this step several times. The purity of the hydrogen is 99.999%, ensuring the reliability of the adsorption effect.

[0066] In some embodiments, the above step A104 is repeated at least five times to ensure that the gas environment in the adsorption device 6 can be replaced with hydrogen and that the hydrogen environment has a high purity.

[0067] A105. Introduce hydrogen into the detection system to increase the pressure in the detection system step by step, and check the air tightness of the detection system step by step.

[0068] For example, the pressure in the booster device 5 is increased step by step by 10 MPa, and the detection system is tested for air tightness every time the pressure in the booster device 5 increases by 10 MPa. The connection points of the detection system are tested for leaks, and the air tightness is qualified if there are no visible bubbles.

[0069] It is understandable that the pressure data here can be collected by the pressure transmitter 12 provided at the air inlet end of the boosting device 5.

[0070] A106. When the pressure in the boosting device 5 rises to the set value and stabilizes, the gas in the connecting pipelines at the air inlet and outlet ends of the boosting device 5 is exhausted, and the pressure in the boosting device 5 is maintained at the set value for a certain period of time.

[0071] Specifically, after the pressure in the boosting device 5 is stabilized, the gas in the connecting pipelines between the air inlet and the air outlet of the boosting device 5 can be evacuated through the first venting pipe 19 and the second venting pipe 20 .

[0072] The temperature of the adsorbent service life test is the ambient temperature. After the pressure in the booster device 5 reaches the set value and remains at the set value for at least 24 hours, the adsorbent service life test can be performed to ensure the stability and reliability of the system operation.

[0073] S2. Open the first control valve 8 at the air inlet end of the adsorption device 6, close the first control valve 8 at the air outlet end of the adsorption device 6, and introduce the gas discharged from the boosting device 5 into the adsorption device 6. When the pressure in the adsorption device 6 increases to a certain value, open the first control valve 8 at the air outlet end of the adsorption device 6, and repeat this step multiple times.

[0074] Exemplarily, the above steps are repeated at least 5 times to ensure that the nitrogen in the device is purged completely, and then the first control valve 8 at the air inlet and outlet ends of the adsorption device 6 is closed.

[0075] S3. Open the first control valves 8 at the inlet and outlet of the adsorption device 6, and collect the gas purified by the adsorption device 6 through the second gas collection port 10. Close the first control valves 8 at the inlet and outlet of the adsorption device 6, respectively. Then, collect the gas discharged from the booster device 5 but not entering the adsorption device 6 through the first gas collection port 9. The gas content data collected by the second gas collection port 10 and the first gas collection port 9 can be used to determine the adsorption effect of the adsorbent.

[0076] S4. Release the gas in the detection system to complete the first gas collection of the detection system.

[0077] S5. Increase the pressure of the booster device 5 to the set value and check the air tightness of the booster device 5; the pressure of the booster device 5 is increased step by step, and the booster device 5 is observed every time it is increased by 10 MPa. Use a leak detection liquid to check for leaks at each connection of the detection system. If there are no visible bubbles, the air tightness is qualified.

[0078] S6, stabilize the pressure of the booster device 5, maintain it for a certain period of time, then open the first control valve 8 at the outlet end of the adsorption device 6 to discharge the gas from the detection system; For example, in step S6 , the pressure of the boosting device 5 can be maintained at the set value for at least 24 hours, and the first control valve 8 at the gas outlet of the adsorption device 6 is opened to discharge the gas in the detection system to complete the purification of the fluid in the adsorption device 6 .

[0079] S7, repeating the above steps S5 and S6, and collecting the gas discharged from the first gas collection port 9 and the second gas collection port 10 in stages respectively; In order to verify the purification effect within the adsorption life of the adsorbent, the gas discharged from the first gas collection port 9 and the second gas collection port 10 is collected in batches, that is, collected at different cycle times of the above-mentioned cyclic reaction.

[0080] For example, gas can be collected after the initial reaction to verify the adsorption effect of the adsorbent. Gas can be collected during the intermediate reaction stage to verify the adsorption effect after half of the adsorbent's service life. Finally, gas can be collected during the late reaction stage to verify the adsorption effect of the adsorbent at the end of its service life.

[0081] By collecting data from different batches and combining the number of test cycles, the adsorption efficiency and fatigue life of the adsorbent can be determined.

[0082] S8. When the adsorption efficiency of the adsorbent in the adsorption device 6 drops to a set value, the detection system automatically stops running and generates a lifespan report of the adsorbent.

[0083] Generally, the above-mentioned set value can be set according to the component content specified in "GB / T 37244-2018 Hydrogen Fuel for Proton Exchange Membrane Fuel Cell Vehicles", that is, when the component content of the gas collected by the second gas collection port 10 cannot meet the component content specified in "GB / T 37244-2018 Hydrogen Fuel for Proton Exchange Membrane Fuel Cell Vehicles", it can be considered that the adsorbent has reached its fatigue life.

[0084] In the above method, the opening and closing of each valve in the entire system, the control of pressure and temperature, the recording of operating time, the number of cycles of inflation and deflation, etc. are all centrally controlled by the controller 7.

[0085] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and application concept of this application, and all these changes or substitutions should fall within the scope of protection of the claims attached to this application.

Claims

1. An adsorbent life detection system, characterized in that: include: Gas source; A booster pump, wherein the air inlet end of the booster pump is connected to the air source; A boosting device, wherein the air inlet of the boosting device is connected to the air outlet of the boosting pump, and the boosting device is used to dope the gas entering the boosting device; An adsorption device, wherein the air inlet end of the adsorption device is respectively connected to the air outlet end of the booster pump and the air outlet end of the booster device, and the adsorption device is provided with the adsorbent; a first gas collection port, provided at the gas inlet end of the adsorption device; A second gas collection port is provided at the gas outlet end of the adsorption device; A controller, wherein the air inlet end of the booster pump is provided with a sixth control valve, the air inlet end and the air outlet end of the booster device, and the air inlet end and the air outlet end of the adsorption device are respectively provided with a first control valve, and the first control valve and the sixth control valve are respectively electrically connected to the controller; The temperature transmitter and the pressure transmitter are respectively arranged between the boosting device and the boosting pump, and are respectively electrically connected to the controller.

2. The adsorbent life detection system according to claim 1, characterized in that: The first control valve includes a pneumatic valve, which is provided on a connecting pipeline of the detection system. The controller can control the gas flow in the detection system through the pneumatic valve.

3. The adsorbent life detection system according to claim 1, characterized in that: The gas source includes: a driving air source connected to the air inlet of the booster pump via a first pipeline, wherein the first pipeline is provided with the sixth control valve; A nitrogen gas source is connected to the air inlet pipeline of the booster pump, and a fourth control valve is provided on the connecting pipeline between the nitrogen gas source and the booster pump; A hydrogen gas source is connected to the air inlet pipeline of the booster pump, and a fifth control valve is provided on the connecting pipeline between the hydrogen gas source and the booster pump.

4. The adsorbent life detection system according to claim 3, characterized in that: The fourth control valve and the fifth control valve include a pressure regulating valve and a shut-off valve, respectively.

5. The adsorbent life detection system according to claim 3, characterized in that: The detection system comprises: The drying filter is provided in the first pipeline and is located between the driving air source and the sixth control valve.

6. The adsorbent life detection system according to claim 1, characterized in that: The detection system comprises: a first vent pipe connected to the booster pump, and provided with a second control valve; The second vent pipe is connected to the gas outlet end of the adsorption device. A third control valve is provided on the second vent pipe. The third control valve is provided at the end of the gas outlet end of the adsorption device away from the first control valve of the adsorption device.

7. The adsorbent life detection system according to claim 1, characterized in that: The controller includes a cycle counter, which is used to collect the number of times the adsorption device is filled and discharged.

8. The adsorbent life detection system according to claim 1, characterized in that: A liquid gas contact medium is provided in the boosting device, and the gas entering the boosting device can contact the gas contact medium, so that the gas discharged from the boosting device can carry the gas contact medium.

9. A method for detecting adsorbent life, characterized in that: Using the detection system according to any one of claims 1 to 8, the detection method comprises the following steps: Step 1: Check the air tightness of the detection system and stabilize the pressure of the detection system at a set value; Step 2: Open the first control valve at the air inlet of the adsorption device, close the first control valve at the air outlet of the adsorption device, and introduce the gas discharged from the booster device into the adsorption device. When the pressure in the adsorption device increases to a certain value, open the first control valve at the air outlet of the adsorption device, and repeat this step multiple times. Step 3: Collect the gas purified by the adsorption device, close the first control valves at the gas inlet and gas outlet of the adsorption device respectively, and then collect the gas discharged from the boosting device but not entering the adsorption device; Step 4, venting the gas in the detection system; Step 5: Increase the pressure of the booster device to a set value and check the air tightness of the booster device; Step 6: Stabilize the pressure of the boosting device, maintain it for a certain period of time, and then open the first control valve at the gas outlet of the adsorption device to discharge the gas from the detection system; Step 7: Repeat steps 5 and 6 above, and collect the gas discharged from the first gas collection port and the second gas collection port in stages respectively; Step 8: When the adsorption efficiency of the adsorbent in the adsorption device drops to a set value, the detection system automatically stops running and generates a report on the lifespan of the adsorbent.

10. The method for detecting adsorbent life according to claim 9, characterized in that: The step 1 also includes: A gas contact medium is added to the pressurizing device, and an adsorbent is filled into the adsorption device.

11. The method for detecting adsorbent life according to claim 9, characterized in that: The step 1 specifically includes: Step 101: nitrogen is introduced into the detection system to check the air tightness of the detection system. After the air tightness test is completed, the detection system is depressurized to normal pressure; Step 102: continuously introducing nitrogen into the detection system until the oxygen content of the gas in the detection system is lower than 0.5%; Step 103: closing the first control valves at the air inlet and outlet of the adsorption device to place the adsorbent in the adsorption device in a nitrogen-sealed state; Step 104: introducing hydrogen into the detection system to replace the gas in the detection system. When the pressure in the detection system reaches 5 MPa, the gas is evacuated to 0.5 MPa. This step is repeated multiple times. Step 105: introducing hydrogen into the detection system to gradually increase the pressure in the detection system, and checking the airtightness of the detection system step by step; Step 106: When the pressure in the boosting device rises to the set value and stabilizes, the gas in the connecting pipelines of the air inlet and air outlet of the boosting device is evacuated, and the pressure in the boosting device is maintained at the set value for a certain period of time.

12. The method for detecting adsorbent life according to claim 11, characterized in that: The step 104 is repeated no less than 5 times.

13. The method for detecting adsorbent life according to claim 11, characterized in that: The step 105 specifically includes: introducing hydrogen into the detection system so that the pressure in the detection system gradually increases, and performing an airtightness test on the detection system every time the pressure in the detection system increases by 10 MPa.

14. The method for detecting adsorbent life according to claim 11, characterized in that: In step 106, the pressure in the boosting device is maintained at a set value for at least 24 hours.

15. The method for detecting adsorbent life according to claim 9, characterized in that: The step 2 is repeated no less than 5 times.

16. The method for detecting adsorbent life according to claim 9, characterized in that: In step 6, the pressure of the booster device is maintained at a set value for at least 24 hours, and the first control valve at the gas outlet of the adsorption device is opened to discharge the gas in the detection system.

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