A hydrogen purification test apparatus

Abstract

The utility model discloses a kind of hydrogen purification test equipment, it relates to hydrogen purification test technical field, to solve the existing hydrogen purification method has many, including low-temperature separation method, selective adsorption method, metal hydride purification method and electrochemical hydrogen separator and various processes, but for various processes, lack a system research test separation equipment system, it is not conducive to the development and research of hydrogen purification equipment, its technical scheme main point is including anode gas inlet system and cathode gas inlet system, the anode gas inlet system and cathode gas inlet system outlet communication has purification equipment, the exhaust end of the purification equipment is communicated with tail gas discharge system, the purification equipment is provided with electric pile temperature control system, the other end of the purification equipment is connected to electricity. Reach the effect with the function of completing sensitivity test, component selection, life assessment and theoretical basis research.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen purification and testing technology, and in particular to a hydrogen purification and testing device. Background Technology

[0002] With societal progress and development, global energy demand is increasing year by year. However, current energy consumption remains concentrated on non-renewable fossil fuels (crude oil, natural gas, coal, etc.), while renewable energy sources (solar energy, wind energy, geothermal energy, etc.) account for a relatively small proportion of consumption.

[0003] The consumption of fossil fuels will inevitably harm the natural environment, especially the greenhouse effect caused by CO2 emissions;

[0004] Furthermore, traditional fossil fuels are inevitably facing increasing depletion; therefore, finding a new energy carrier is essential, and hydrogen energy is considered a crucial link in solving environmental pollution and energy shortages. The concept of a "hydrogen economy," using hydrogen as a sustainable energy medium, is a feasible solution to future environmental problems.

[0005] Hydrogen, as a good reducing agent and clean fuel, is widely used in industries such as petroleum, chemical, metallurgy, and medicine. It is an important direction for future energy development. At present, most industrial hydrogen production yields mixed gases. To obtain high-purity hydrogen, hydrogen separation and purification are still required.

[0006] The existing technical solutions mentioned above have the following drawbacks: There are many existing methods for purifying hydrogen, including low-temperature separation, selective adsorption, metal hydride purification, and electrochemical hydrogen separators, but there is a lack of a systematic research and testing system for separation equipment for each process, which is not conducive to the development and research of hydrogen purification equipment. Utility Model Content

[0007] The purpose of this invention is to provide a hydrogen purification testing device.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A hydrogen purification testing device includes an anode inlet system and a cathode inlet system. The outlets of the anode inlet system and the cathode inlet system are connected to a purification device. The exhaust end of the purification device is connected to a tail gas emission system. The purification device is equipped with an electric stack temperature control system. The other end of the purification device is connected to electricity.

[0010] By adopting the above technical solution, the anode gas of the equipment is a mixture of nitrogen, ammonia, and hydrogen, and the cathode gas is hydrogen. Both the anode and cathode gases are humidified in a humidification tank before entering the electrochemical hydrogen separator. After reaction in the electrochemical hydrogen separator, the purified hydrogen flows out from the cathode. The high-temperature, high-humidity hydrogen is cooled and dried to become pure, dry hydrogen, which is then sampled for chromatographic analysis. The anode gas is directly discharged after back pressure. Because the electrochemical hydrogen separator continuously releases heat during operation, it needs to be cooled. The circulating water flowing through the separator exchanges heat with the cooling water through a plate heat exchanger. The cooled circulating water then enters the separator, carrying away the heat. The deionized water consumed during humidification is replenished by a deionized water supply system, and nitrogen can be used to purge the pipes within the system.

[0011] Furthermore, the anode gas inlet system includes an ammonia gas inlet, a first hydrogen gas inlet, and a first nitrogen gas inlet. One end of the ammonia gas inlet is fixedly connected to an ammonia gas filter. The end of the ammonia gas filter away from the ammonia gas inlet is fixedly connected to an ammonia gas pressure reducing valve. The side of the ammonia gas pressure reducing valve away from the ammonia gas filter is fixedly connected to an ammonia gas solenoid valve. The side of the ammonia gas solenoid valve away from the ammonia gas solenoid valve is fixedly connected to an ammonia gas mass flow controller.

[0012] One end of the first hydrogen inlet is fixedly connected to a first hydrogen filter, the end of the first hydrogen filter away from the first hydrogen inlet is fixedly connected to a first hydrogen pressure reducing valve, the side of the first hydrogen pressure reducing valve away from the first hydrogen filter is fixedly connected to a first hydrogen solenoid valve, and the side of the first hydrogen solenoid valve away from the first hydrogen pressure reducing valve is fixedly connected to a first hydrogen mass flow controller.

[0013] One end of the first nitrogen inlet is fixedly connected to a first nitrogen filter, the end of the first nitrogen filter away from the first nitrogen inlet is fixedly connected to a first nitrogen pressure reducing valve, the end of the first nitrogen pressure reducing valve away from the first nitrogen filter is fixedly connected to a first nitrogen solenoid valve, and the side of the first nitrogen solenoid valve away from the first nitrogen pressure reducing valve is fixedly connected to a nitrogen mass flow controller.

[0014] Furthermore, the other end of the ammonia mass flow controller, the first hydrogen mass flow controller, and the nitrogen mass flow controller is fixedly connected to a static mixer. The other end of the static mixer is fixedly connected to an anode main solenoid valve, an anode first humidification solenoid valve, and an anode second humidification solenoid valve. The side of the anode first humidification solenoid valve away from the static mixer is fixedly connected to an anode first humidification tank. The side of the anode second humidification solenoid valve away from the static mixer is fixedly connected to an anode second humidification tank. The sides of the anode first humidification tank, the anode second humidification tank, and the anode main solenoid valve away from the static mixer are fixedly connected to the purification equipment.

[0015] By adopting the above technical solution, the anode gas source is composed of ammonia, hydrogen, and nitrogen, which can achieve the mixing of hydrogen, nitrogen, and ammonia in any proportion. The gas source passes through a filter, pressure reducing valve, and mass flow controller before entering a static mixer for gas mixing. The uniformly mixed gas can enter the fuel cell stack through a dry or wet path. The wet path is equipped with two humidification tanks. When the mixed gas contains ammonia, it enters the first humidification tank; when the mixed gas does not contain ammonia, it enters the second humidification tank.

[0016] Furthermore, the cathode gas inlet system includes a second hydrogen inlet and a second nitrogen inlet. One end of the second hydrogen inlet is fixedly connected to a second hydrogen filter. The side of the second hydrogen filter away from the second hydrogen inlet is fixedly connected to a second hydrogen pressure reducing valve. The side of the second hydrogen pressure reducing valve away from the second hydrogen filter is fixedly connected to a second hydrogen solenoid valve. The side of the second hydrogen solenoid valve away from the second hydrogen pressure reducing valve is fixedly connected to a second hydrogen mass flow controller. One end of the second nitrogen inlet is fixedly connected to a second nitrogen filter. The second nitrogen filter is located away from the second nitrogen inlet... One end of the air inlet is fixedly connected to a second nitrogen pressure reducing valve. The end of the second nitrogen pressure reducing valve away from the second nitrogen filter is fixedly connected to a second nitrogen solenoid valve. The end of the second nitrogen solenoid valve away from the second nitrogen pressure reducing valve is connected to a second hydrogen mass flow controller. The other end of the second hydrogen mass flow controller is fixedly connected to a cathode main solenoid valve and a cathode humidification solenoid valve. The end of the cathode humidification solenoid valve away from the second hydrogen mass flow controller is fixedly connected to a cathode humidification tank. The ends of the cathode humidification tank and the cathode main solenoid valve away from the second hydrogen mass flow controller are fixedly connected to the purification equipment.

[0017] By adopting the above technical solution, the cathode gas source consists of hydrogen and nitrogen. Nitrogen is used as a purge gas and does not participate in the fuel cell reaction. Hydrogen passes through a filter, pressure reducing valve, and mass flow controller, and then enters the fuel cell stack through humidification or a dry circuit.

[0018] Furthermore, the temperature control system of the fuel cell stack includes a plate heat exchanger and a second temperature transmitter fixedly connected to the lower end of the purification equipment. A flow meter is fixedly connected to the end of the plate heat exchanger away from the purification equipment. A circulating water pump is fixedly connected to the end of the flow meter away from the plate heat exchanger. A circulating water tank is fixedly connected to the end of the circulating water pump away from the flow meter. A heating rod is fixedly connected inside the circulating water tank. A first temperature transmitter is fixedly connected to the end of the circulating water tank away from the circulating water pump. One end of the first temperature transmitter, the end of the circulating water tank away from the circulating water pump, and the purification equipment are fixedly connected.

[0019] By adopting the above technical solution, the temperature control of the purification device adopts liquid cooling. The heat generated during the operation of the purification device is carried out of the device by circulating water. After the temperature is measured by the first temperature transmitter, the water enters the circulating water tank. The circulating water in the circulating water tank is pumped to the circulating water flow meter and then enters the plate heat exchanger. In the plate heat exchanger, the circulating water exchanges heat with the secondary cooling water to reduce its temperature. After cooling, the circulating water returns to the purification device after the temperature is measured by the second temperature transmitter. When the system starts, in order to ensure the minimum temperature required for the normal operation of the purification device, the supply of secondary cooling water to the plate heat exchanger is stopped, and the heating rod in the circulating water tank is turned on to heat the circulating water, thereby reaching the minimum temperature required for the operation of the purification device.

[0020] Furthermore, the exhaust gas system includes an anode exhaust system and a cathode exhaust system. The anode exhaust system includes an anode back pressure solenoid valve and an anode direct exhaust solenoid valve that are fixedly connected to the purification equipment. The anode back pressure solenoid valve is fixedly connected to an anode back pressure valve on the side away from the purification equipment. The anode back pressure valve is fixedly connected to an anode exhaust port on the side away from the anode back pressure solenoid valve. The anode direct exhaust solenoid valve is fixedly connected to an anode direct exhaust port on the side away from the purification equipment.

[0021] The cathode exhaust system includes a cathode back pressure solenoid valve and a cathode direct exhaust solenoid valve that are fixedly connected to the purification equipment. The cathode back pressure solenoid valve is away from the drying device of the purification equipment. The end of the drying device away from the cathode back pressure solenoid valve is fixedly connected to the cathode back pressure valve. The side of the cathode back pressure valve away from the drying device is fixedly connected to the cathode exhaust port. The end of the cathode direct exhaust solenoid valve away from the purification equipment is fixedly connected to the cathode direct exhaust port.

[0022] By adopting the above technical solution, after the gas from the anode and cathode enters the purification device, it undergoes reaction purification within the purification device. The purified hydrogen is discharged at the cathode outlet of the system. The cathode outlet gas is set with two paths: one is directly discharged, and the other is discharged from the system through a back pressure valve after the gas dew point is reduced to below -℃. The remaining gas is discharged at the anode outlet of the system. The anode outlet is set with two paths: the normal anode outlet gas is discharged from the system after being back pressured by the back pressure valve, or it can be discharged directly from the system without back pressure.

[0023] In summary, the beneficial technical effects of this utility model are as follows:

[0024] 1. This hydrogen purification testing equipment uses a mixture of nitrogen, ammonia, and hydrogen as the anode gas and hydrogen as the cathode gas. The anode and cathode gases are humidified in a humidification tank and then enter an electrochemical hydrogen separator. After reacting in the electrochemical hydrogen separator, the purified hydrogen flows out from the cathode. The high-temperature and high-humidity hydrogen is cooled and dried to become pure and dry hydrogen, which is then sampled through the sampling port for chromatographic analysis. The anode gas is directly discharged after being subjected to back pressure.

[0025] 2. This hydrogen purification testing equipment requires cooling because the electrochemical hydrogen separator continuously releases heat during operation. The circulating water flowing through the separator exchanges heat with the cooling water through a plate heat exchanger. The cooled circulating water then enters the separator, carrying away the heat. The deionized water consumed during the humidification process is replenished by the deionized water supply system. Nitrogen can be used to purge the pipes in the system.

[0026] 3. This hydrogen purification testing equipment can control parameters including voltage, current, temperature, gas flow rate, back pressure, temperature, and relative humidity to enable the electrochemical hydrogen separator to operate under various conditions, and perform functions such as sensitivity testing, component selection, life assessment, and theoretical research. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the anode air intake system of this utility model;

[0029] Figure 3 This is a schematic diagram of the cathode air intake system of this utility model;

[0030] Figure 4 This is a schematic diagram of the emission system structure of this utility model;

[0031] Figure 5 This is a schematic diagram of the structure of the fuel cell stack temperature control system of this utility model.

[0032] In the diagram, 1. Anode gas inlet system; 2. Cathode gas inlet system; 3. Purification equipment; 4. Discharge system; 5. Fuel cell stack temperature control system; 101. Ammonia gas inlet; 102. First hydrogen gas inlet; 103. First nitrogen gas inlet; 11. Ammonia filter; 12. Ammonia pressure reducing valve; 13. Ammonia solenoid valve; 14. Ammonia mass flow controller; 15. First hydrogen filter; 16. First hydrogen pressure reducing valve; 17. First hydrogen solenoid valve; 18. 19. First hydrogen mass flow controller; 110. First nitrogen filter; 111. First nitrogen pressure reducing valve; 112. First nitrogen solenoid valve; 113. Nitrogen mass flow controller; 114. Static mixer; 115. Anode main solenoid valve; 116. Anode first humidification solenoid valve; 117. Anode second humidification solenoid valve; 118. Anode first humidification tank; 201. Second hydrogen inlet; 202. Second nitrogen inlet; 21. Second hydrogen filter; 22. Second hydrogen pressure reducing valve; 23. Second hydrogen solenoid valve; 24. Second hydrogen mass flow controller; 25. Second nitrogen filter; 26. Second nitrogen pressure reducing valve; 27. Second nitrogen solenoid valve; 28. Cathode humidification solenoid valve; 29. ​​Cathode humidification tank; 210. Cathode main solenoid valve; 41. Anode exhaust system; 42. Cathode exhaust system; 43. Anode back pressure solenoid valve; 44. Anode 45. Back pressure valve; 46. Anode exhaust port; 47. Anode direct discharge port; 48. Cathode back pressure solenoid valve; 49. Cathode direct discharge solenoid valve; 40. Drying device; 411. Cathode back pressure valve; 412. Cathode exhaust port; 413. Cathode direct discharge port; 414. Anode direct discharge solenoid valve; 51. Plate heat exchanger; 52. Second temperature transmitter; 53. Flow meter; 54. Circulating water pump; 55. Circulating water tank; 56. Heating rod; 57. First temperature transmitter. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings.

[0034] Reference Figure 1 A hydrogen purification testing device includes an anode inlet system 1 and a cathode inlet system 2. The outlets of the anode inlet system 1 and the cathode inlet system 2 are connected to a purification device 3. The exhaust end of the purification device 3 is connected to a tail gas emission system 4. The purification device 3 is equipped with an electric stack temperature control system 5. The other end of the purification device 3 is connected to electricity.

[0035] Reference Figure 2The anode inlet system 1 includes an ammonia inlet 101, a first hydrogen inlet 102, and a first nitrogen inlet 103. One end of the ammonia inlet 101 is fixedly connected to an ammonia filter 11. The end of the ammonia filter 11 away from the ammonia inlet 101 is fixedly connected to an ammonia pressure reducing valve 12. The side of the ammonia pressure reducing valve 12 away from the ammonia filter 11 is fixedly connected to an ammonia solenoid valve 13. The side of the ammonia solenoid valve 13 away from the ammonia solenoid valve 13 is fixedly connected to an ammonia mass flow controller 14. One end of the first hydrogen inlet 102 is fixedly connected to a first hydrogen filter 15. The first hydrogen filter 15 is located away from the first hydrogen inlet. One end of 102 is fixedly connected to a first hydrogen pressure reducing valve 16. The side of the first hydrogen pressure reducing valve 16 away from the first hydrogen filter 15 is fixedly connected to a first hydrogen solenoid valve 17. The side of the first hydrogen solenoid valve 17 away from the first hydrogen pressure reducing valve 16 is fixedly connected to a first hydrogen mass flow controller 18. The anode gas source consists of ammonia, hydrogen, and nitrogen, enabling the mixing of hydrogen and nitrogen, or two mixed gases (hydrogen, nitrogen, and ammonia) in any proportion. After passing through the filter, pressure reducing valve, and mass flow controller, the gas source enters the static mixer 113 for gas mixing. The uniformly mixed gas can be selected via a dry or wet path and enters the fuel cell stack. Two humidification tanks are installed in the intermediate humidification circuit. When ammonia is present in the mixed gas, the mixed gas enters the first humidification tank. One end of the first nitrogen inlet 103 is fixedly connected to the first nitrogen filter 19. The end of the first nitrogen filter 19 away from the first nitrogen inlet 103 is fixedly connected to the first nitrogen pressure reducing valve 110. The end of the first nitrogen pressure reducing valve 110 away from the first nitrogen filter 19 is fixedly connected to the first nitrogen solenoid valve 111. The side of the first nitrogen solenoid valve 111 away from the first nitrogen pressure reducing valve 110 is fixedly connected to the nitrogen mass flow controller 112, the ammonia mass flow controller 14, the first hydrogen mass flow controller 18, and the nitrogen mass flow controller 112. The other end of the controller 112 is fixedly connected to a static mixer 113. The other end of the static mixer 113 is fixedly connected to an anode main solenoid valve 114, an anode first humidification solenoid valve 115, and an anode second humidification solenoid valve 116. The side of the anode first humidification solenoid valve 115 away from the static mixer 113 is fixedly connected to an anode first humidification tank 118. The side of the anode second humidification solenoid valve 116 away from the static mixer 113 is fixedly connected to an anode second humidification tank 117. The sides of the anode first humidification tank 118, the anode second humidification tank 117, and the anode main solenoid valve 114 away from the static mixer 113 are fixedly connected to the purification equipment 3.

[0036] Reference Figure 3The cathode inlet system 2 includes a second hydrogen inlet 201 and a second nitrogen inlet 202. One end of the second hydrogen inlet 201 is fixedly connected to a second hydrogen filter 21. The side of the second hydrogen filter 21 away from the second hydrogen inlet 201 is fixedly connected to a second hydrogen pressure reducing valve 22. The end of the second hydrogen pressure reducing valve 22 away from the second hydrogen filter 21 is fixedly connected to a second hydrogen solenoid valve 23. The end of the second hydrogen solenoid valve 23 away from the second hydrogen pressure reducing valve 22 is fixedly connected to a second hydrogen mass flow controller 24. One end of the second nitrogen inlet 202 is fixedly connected to a second nitrogen filter 25. The end of the second nitrogen filter 25 away from the second nitrogen inlet 202 is fixedly connected to a second nitrogen pressure reducing valve 26. The second nitrogen pressure reducing valve 26 is located away from the second hydrogen filter 201. One end of the nitrogen filter 25 is fixedly connected to a second nitrogen solenoid valve 27. The end of the second nitrogen solenoid valve 27 away from the second nitrogen pressure reducing valve 26 is connected to a second hydrogen mass flow controller 24. The other end of the second hydrogen mass flow controller 24 is fixedly connected to a cathode trunk solenoid valve 210 and a cathode humidification solenoid valve 28. The end of the cathode humidification solenoid valve 28 away from the second hydrogen mass flow controller 24 is fixedly connected to a cathode humidification tank 29. The ends of the cathode humidification tank 29 and the cathode trunk solenoid valve 210 away from the second hydrogen mass flow controller 24 are fixedly connected to the purification equipment 3. The cathode gas source consists of hydrogen and nitrogen. Nitrogen is used as a purge gas and does not participate in the fuel cell stack reaction. After passing through the filter, pressure reducing valve, and mass flow controller, hydrogen enters the fuel cell stack through humidification or trunking.

[0037] Reference Figure 5The fuel cell stack temperature control system 5 includes a plate heat exchanger 51 and a second temperature transmitter 52 fixedly connected to the lower end of the purification equipment 3. A flow meter 53 is fixedly connected to the end of the plate heat exchanger 51 furthest from the purification equipment 3. A circulating water pump 54 is fixedly connected to the end of the flow meter 53 furthest from the plate heat exchanger 51. A circulating water tank 55 is fixedly connected to the end of the circulating water pump 54 furthest from the flow meter 53. A heating rod 56 is fixedly connected inside the circulating water tank 55. A first temperature transmitter 57 is fixedly connected to the end of the circulating water tank 55 furthest from the circulating water pump 54. One end of the first temperature transmitter 57, the end of the circulating water tank 55 furthest from the circulating water pump 54, and the purification equipment 3 are fixedly connected. The purification device uses liquid cooling for temperature control. The heat generated during the operation of the purification unit is carried out of the unit by the circulating water. After the temperature is measured by the first temperature transmitter 57, the water enters the circulating water tank 55. The circulating water in the circulating water tank 55 is pumped by the circulating water pump 54 to the circulating water flow meter 53 for measurement and then enters the plate heat exchanger 51. In the plate heat exchanger 51, the circulating water exchanges heat with the secondary cooling water to reduce its temperature. After the temperature is reduced, the circulating water returns to the purification unit after the temperature is measured by the second temperature transmitter 52. When the system starts, in order to ensure the minimum temperature required for the normal operation of the purification unit, the supply of secondary cooling water to the plate heat exchanger 51 is stopped, and the heating rod 56 in the circulating water tank 55 is turned on to heat the circulating water, thereby reaching the minimum temperature required for the operation of the purification unit.

[0038] Reference Figure 4 The exhaust system 4 includes an anode exhaust system 41 and a cathode exhaust system 42. The anode exhaust system 41 includes an anode back pressure solenoid valve 43 and an anode direct exhaust solenoid valve 413, both fixedly connected to the purification equipment 3. An anode back pressure valve 44 is fixedly connected to the side of the anode back pressure solenoid valve 43 away from the purification equipment 3. An anode exhaust port 45 is fixedly connected to the side of the anode back pressure solenoid valve 44 away from the anode back pressure solenoid valve 43. An anode direct exhaust port 46 is fixedly connected to the side of the anode direct exhaust solenoid valve 413 away from the purification equipment 3. The cathode exhaust system 42 includes a cathode back pressure solenoid valve 47 and a cathode direct exhaust solenoid valve 48, both fixedly connected to the purification equipment 3. The cathode back pressure solenoid valve 47 is located away from the drying device 49 of the purification equipment 3. The end of the drying device 49 away from the cathode back pressure solenoid valve 47 is fixedly connected to the cathode back pressure valve 410. The side of the cathode back pressure valve 410 away from the drying device 49 is fixedly connected to the cathode exhaust port 411. The end of the cathode direct discharge solenoid valve 48 away from the purification equipment 3 is fixedly connected to the cathode direct discharge port 412. After the gas from the cathode and anode enters the purification device, it undergoes reaction purification in the purification device. The purified hydrogen is discharged at the cathode discharge port of the system. The cathode outlet gas is set in two paths: one is directly discharged, and the other is discharged from the system through the back pressure valve after the gas dew point is reduced to below -20°C after gas drying.

[0039] The implementation principle of this embodiment is as follows: First, the anode gas of the equipment is a mixture of nitrogen, ammonia and hydrogen, and the cathode gas is hydrogen. After being humidified by the humidification tank, the cathode and anode gases enter the electrochemical hydrogen separator. After being reacted in the electrochemical hydrogen separator, the purified hydrogen flows out from the cathode. The high temperature and high humidity hydrogen becomes pure and dry hydrogen after being cooled and dried. It is sampled from the sampling port for chromatographic analysis. The anode gas is directly discharged after being subjected to back pressure.

[0040] Since the electrochemical hydrogen separator continuously releases heat during operation, it needs to be cooled. The circulating water flowing through the separator exchanges heat with the cooling water under the action of the plate heat exchanger 51. The cooled circulating water enters the separator and carries away the heat in the separator.

[0041] The deionized water consumed during the humidification process is replenished by the deionized water supply system, and nitrogen can be used to purge the pipes in the system.

[0042] The gas source consists of ammonia, hydrogen, and nitrogen, and can achieve mixing of hydrogen, nitrogen, and ammonia in any proportion. After passing through a filter, pressure reducing valve, and mass flow controller, the gas enters the static mixer 113 for gas mixing. The uniformly mixed gas can be selected through a dry path or a wet path to enter the fuel cell stack. The wet path is equipped with two humidification tanks. When the mixed gas contains ammonia, it enters the first humidification tank; when the mixed gas does not contain ammonia, it enters the second humidification tank.

[0043] The polar gas source consists of hydrogen and nitrogen. Nitrogen is used as a purge gas and does not participate in the fuel cell stack reaction. Hydrogen passes through a filter, pressure reducing valve, and mass flow controller before entering the fuel cell stack through humidification or a dry circuit.

[0044] After the gas from the anode and cathode enters the purification device, it undergoes reaction purification inside the purification device. The purified hydrogen is discharged at the cathode outlet of the system. The cathode outlet gas is set with two paths: one is directly discharged, and the other is discharged from the system through a back pressure valve after the gas dew point is reduced to below -20℃.

[0045] The remaining gas is discharged at the anode outlet of the system. The anode outlet is set with two paths. Normal anode gas is discharged from the system after being back pressured by the back pressure valve, or it can be discharged directly from the system without back pressure.

[0046] The purification unit uses liquid cooling for temperature control. The heat generated during the operation of the purification unit is carried out of the unit by circulating water. After the temperature is measured by the first temperature transmitter 57, the water enters the circulating water tank 55. The circulating water in the circulating water tank 55 is pumped by the circulating water pump 54 to the circulating water flow meter 53 and then enters the plate heat exchanger 51. In the plate heat exchanger 51, the circulating water exchanges heat with the secondary cooling water to reduce its temperature. After the temperature is reduced, the circulating water returns to the purification unit after the temperature is measured by the second temperature transmitter 52. When the system starts, in order to ensure the minimum operating temperature of the purification unit, the supply of secondary cooling water to the plate heat exchanger 51 is stopped, and the heating rod 56 in the circulating water tank 55 is turned on to heat the circulating water, thereby reaching the minimum operating temperature required for the purification unit.

[0047] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A hydrogen purification testing device, comprising an anode inlet system (1) and a cathode inlet system (2), characterized in that: The outlet ends of the anode air intake system (1) and the cathode air intake system (2) are connected to a purification device (3). The exhaust end of the purification device (3) is connected to a tail gas emission system (4). The purification device (3) is equipped with a fuel cell stack temperature control system (5). The other end of the purification device (3) is connected to electricity.

2. The hydrogen purification and testing equipment according to claim 1, characterized in that: The anode gas inlet system (1) includes an ammonia gas inlet (101), a first hydrogen gas inlet (102), and a first nitrogen gas inlet (103). One end of the ammonia gas inlet (101) is fixedly connected to an ammonia gas filter (11). The end of the ammonia gas filter (11) away from the ammonia gas inlet (101) is fixedly connected to an ammonia gas pressure reducing valve (12). The side of the ammonia gas pressure reducing valve (12) away from the ammonia gas filter (11) is fixedly connected to an ammonia gas solenoid valve (13). The side of the ammonia gas solenoid valve (13) away from the ammonia gas solenoid valve (13) is fixedly connected to an ammonia gas mass flow controller (14). One end of the first hydrogen inlet (102) is fixedly connected to a first hydrogen filter (15), and the end of the first hydrogen filter (15) away from the first hydrogen inlet (102) is fixedly connected to a first hydrogen pressure reducing valve (16). The side of the first hydrogen pressure reducing valve (16) away from the first hydrogen filter (15) is fixedly connected to a first hydrogen solenoid valve (17), and the side of the first hydrogen solenoid valve (17) away from the first hydrogen pressure reducing valve (16) is fixedly connected to a first hydrogen mass flow controller (18). One end of the first nitrogen inlet (103) is fixedly connected to a first nitrogen filter (19), the end of the first nitrogen filter (19) away from the first nitrogen inlet (103) is fixedly connected to a first nitrogen pressure reducing valve (110), the end of the first nitrogen pressure reducing valve (110) away from the first nitrogen filter (19) is fixedly connected to a first nitrogen solenoid valve (111), and the side of the first nitrogen solenoid valve (111) away from the first nitrogen pressure reducing valve (110) is fixedly connected to a nitrogen mass flow controller (112).

3. The hydrogen purification and testing equipment according to claim 2, characterized in that: The other end of the ammonia mass flow controller (14), the first hydrogen mass flow controller (18), and the nitrogen mass flow controller (112) is fixedly connected to a static mixer (113). The other end of the static mixer (113) is fixedly connected to an anode trunk solenoid valve (114), an anode first humidification solenoid valve (115), and an anode second humidification solenoid valve (116). The side of the anode first humidification solenoid valve (115) away from the static mixer (113) is fixedly connected to an anode first humidification tank (118). The side of the anode second humidification solenoid valve (116) away from the static mixer (113) is fixedly connected to an anode second humidification tank (117). The sides of the anode first humidification tank (118), the anode second humidification tank (117), and the anode trunk solenoid valve (114) away from the static mixer (113) are fixedly connected to the purification equipment (3).

4. The hydrogen purification and testing equipment according to claim 1, characterized in that: The cathode inlet system (2) includes a second hydrogen inlet (201) and a second nitrogen inlet (202). One end of the second hydrogen inlet (201) is fixedly connected to a second hydrogen filter (21). The side of the second hydrogen filter (21) away from the second hydrogen inlet (201) is fixedly connected to a second hydrogen pressure reducing valve (22). The side of the second hydrogen pressure reducing valve (22) away from the second hydrogen filter (21) is fixedly connected to a second hydrogen solenoid valve (23). The side of the second hydrogen solenoid valve (23) away from the second hydrogen pressure reducing valve (22) is fixedly connected to a second hydrogen mass flow controller (24). One end of the second nitrogen inlet (202) is fixedly connected to a second nitrogen filter (25). The side of the second nitrogen filter (25) away from the second nitrogen inlet (201) is fixedly connected to a second hydrogen mass flow controller (24). One end of 202) is fixedly connected to a second nitrogen pressure reducing valve (26). The end of the second nitrogen pressure reducing valve (26) away from the second nitrogen filter (25) is fixedly connected to a second nitrogen solenoid valve (27). The end of the second nitrogen solenoid valve (27) away from the second nitrogen pressure reducing valve (26) is connected to a second hydrogen mass flow controller (24). The other end of the second hydrogen mass flow controller (24) is fixedly connected to a cathode trunk solenoid valve (210) and a cathode humidification solenoid valve (28). The end of the cathode humidification solenoid valve (28) away from the second hydrogen mass flow controller (24) is fixedly connected to a cathode humidification tank (29). The ends of the cathode humidification tank (29) and the cathode trunk solenoid valve (210) away from the second hydrogen mass flow controller (24) are fixedly connected to the purification equipment (3).

5. The hydrogen purification and testing equipment according to claim 1, characterized in that: The temperature control system (5) of the fuel cell stack includes a plate heat exchanger (51) and a second temperature transmitter (52) fixedly connected to the lower end of the purification equipment (3). A flow meter (53) is fixedly connected to the end of the plate heat exchanger (51) away from the purification equipment (3). A circulating water pump (54) is fixedly connected to the end of the flow meter (53) away from the plate heat exchanger (51). A circulating water tank (55) is fixedly connected to the end of the circulating water pump (54) away from the flow meter (53). A heating rod (56) is fixedly connected inside the circulating water tank (55). A first temperature transmitter (57) is fixedly connected to the end of the circulating water tank (55) away from the circulating water pump (54). One end of the first temperature transmitter (57), the end of the circulating water tank (55) away from the circulating water pump (54), and the purification equipment (3) are fixedly connected.

6. The hydrogen purification and testing equipment according to claim 1, characterized in that: The exhaust system (4) includes an anode exhaust system (41) and a cathode exhaust system (42). The anode exhaust system (41) includes an anode back pressure solenoid valve (43) and an anode direct discharge solenoid valve (413) that are fixedly connected to the purification equipment (3). An anode back pressure valve (44) is fixedly connected to the side of the anode back pressure solenoid valve (43) away from the purification equipment (3). An anode exhaust port (45) is fixedly connected to the side of the anode back pressure valve (44) away from the anode back pressure solenoid valve (43). An anode direct discharge solenoid valve (413) is fixedly connected to an anode direct discharge port (46) on the side of the anode direct discharge solenoid valve (413) away from the purification equipment (3). The cathode exhaust system (42) includes a cathode back pressure solenoid valve (47) and a cathode direct exhaust solenoid valve (48) which are fixedly connected to the purification device (3). The cathode back pressure solenoid valve (47) is away from the drying device (49) of the purification device (3). The end of the drying device (49) away from the cathode back pressure solenoid valve (47) is fixedly connected to a cathode back pressure valve (410). The side of the cathode back pressure valve (410) away from the drying device (49) is fixedly connected to a cathode exhaust port (411). The end of the cathode direct exhaust solenoid valve (48) away from the purification device (3) is fixedly connected to a cathode direct exhaust port (412).

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