Hydrogen purification equipment and electrolytic hydrogen production system

Abstract

The embodiment of the utility model discloses hydrogen purification equipment and an electrolytic hydrogen production system, and relates to the technical field of new energy equipment, the hydrogen purification equipment comprises a drying assembly, a gas inlet assembly, a gas outlet assembly and a regeneration assembly, and the drying assembly comprises a first drying tower and a second drying tower; the air inlet assembly comprises an air inlet pipeline, and the air inlet pipeline is connected with the first drying tower and the second drying tower; the air outlet assembly comprises an air outlet pipeline; the air outlet pipeline is connected with the first drying tower and the second drying tower; the regeneration assembly comprises an input pipeline, one end of the input pipeline is connected to the gas outlet pipeline, the other end of the input pipeline is connected with the first drying tower and the second drying tower, and a hydrogen pressurizing device is arranged on the input pipeline. According to the technical scheme provided by the embodiment of the invention, stable operation of the hydrogen purification equipment under a relatively low gas production load is realized, and the practicability and the reliability of the hydrogen purification equipment are improved.

Description

Technical Field

[0001] The embodiments in this application relate to the field of new energy equipment technology, and in particular to a hydrogen purification device and an electrolytic hydrogen production system. Background Technology

[0002] In related technologies, most electrolytic hydrogen production systems are equipped with hydrogen purification equipment to dry and purify the hydrogen generated by electrolysis, so as to reduce impurities in the gas and improve the purity of the gas output by the electrolytic hydrogen production system.

[0003] However, current hydrogen purification equipment cannot operate well under low gas production loads in electrolytic hydrogen production systems, which can easily affect the hydrogen purification equipment's hydrogen processing efficiency and reduce the operational stability and reliability of the electrolytic hydrogen production system. Utility Model Content

[0004] Several embodiments in this application propose a hydrogen purification device and an electrolytic hydrogen production system, aiming to achieve stable operation of the hydrogen purification device under low gas production load and improve the practicality and reliability of the hydrogen purification device.

[0005] One embodiment of this application provides a hydrogen purification device comprising a drying component, an inlet component, an outlet component, and a regeneration component. The drying component includes a first drying tower and a second drying tower. The inlet component includes an inlet pipe connected to the first drying tower and the second drying tower. The outlet component includes an outlet pipe connected to the first drying tower and the second drying tower. The regeneration component includes an input pipe, one end of which is connected to the outlet pipe, and the other end of which is connected to both the first drying tower and the second drying tower. A hydrogen pressurization device is provided on the input pipe.

[0006] In one embodiment, the air outlet assembly further includes a pressure gauge and a regulating valve. One end of the input pipe, the pressure gauge, and the regulating valve are sequentially disposed on the air outlet pipe along the airflow direction, and the pressure gauge is electrically connected to the regulating valve.

[0007] In one embodiment, the drying assembly further includes a first temperature control device, and both the first drying tower and the second drying tower are equipped with the first temperature control device.

[0008] In one embodiment, a second temperature control device is provided on the input pipeline, and the hydrogen pressurization device and the second temperature control device are arranged sequentially along the airflow direction of the input pipeline.

[0009] In one embodiment, a filter device is provided on the air outlet pipe, and the filter device and one end of the input pipe are arranged sequentially along the airflow direction of the air outlet pipe.

[0010] In one embodiment, the regeneration assembly further includes an output pipe, one end of which is connected to the first drying tower and the second drying tower, and the other end of which is connected to the air inlet pipe.

[0011] In one embodiment, the air intake assembly further includes a cooling device and a first gas-liquid separator, with one end of the output pipe, the cooling device, and the first gas-liquid separator sequentially disposed on the air intake pipe along the air intake direction.

[0012] In one embodiment, the first gas-liquid separator is equipped with a liquid level detection device, which is used to detect the liquid level inside the first gas-liquid separator, and the first gas-liquid separator is connected to a drain pipe.

[0013] In one embodiment, the air intake assembly further includes a second gas-liquid separator and a deoxygenation device, wherein the second gas-liquid separator and the deoxygenation device are arranged sequentially along the air intake direction.

[0014] An embodiment of this application also proposes an electrolytic hydrogen production system, which includes a preparation device and a hydrogen purification device, wherein the hydrogen purification device is the aforementioned hydrogen purification device, and the preparation device is connected to the hydrogen purification device.

[0015] In the various embodiments provided in this application, a portion of the dried hydrogen output from the outlet pipe is used as regeneration gas and input into the first or second drying tower for regeneration treatment via the input pipe. The regeneration gas is pressurized using a hydrogen pressurization device, which allows the regeneration operation of the first or second drying tower to be stably performed using the regeneration gas with higher pressure. This enables the hydrogen purification equipment to operate stably under lower gas production load conditions, reduces the impact of system load conditions on the hydrogen purification equipment, and further improves the practicality and structural reliability of the hydrogen purification equipment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments or prior art of this application, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of an embodiment of the hydrogen purification equipment provided in this application;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of an embodiment of a hydrogen purification device;

[0019] Figure 3 A schematic diagram of another embodiment of the hydrogen purification equipment provided in this application;

[0020] Figure 4 for Figure 3 A schematic diagram of an embodiment of a hydrogen purification device.

[0021] Explanation of icon numbers:

[0022] 100. Hydrogen purification equipment; 10. Drying assembly; 11. First drying tower; 13. Second drying tower; 15. First temperature control device; 30. Inlet assembly; 31. Inlet pipe; 33. Cooling device; 35. First gas-liquid separator; 351. Liquid level detection device; 353. Drain pipe; 37. Second gas-liquid separator; 39. Deoxygenation device; 50. Outlet assembly; 51. Outlet pipe; 53. Pressure gauge; 55. Regulating valve; 57. Filter device; 70. Regeneration assembly; 71. Input pipe; 711. Hydrogen pressurization device; 713. Second temperature control device; 73. Output pipe. Detailed Implementation

[0023] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of several embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] It should be noted that if directional indications (such as up, down, left, right, front, back, etc.) are involved in multiple embodiments of this application, the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0025] Furthermore, if multiple embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0026] In related technologies, most electrolytic hydrogen production systems are equipped with hydrogen purification equipment to dry and purify the hydrogen generated by electrolysis, thereby reducing impurities in the gas and improving the purity of the gas output from the electrolytic hydrogen production system. However, current hydrogen purification equipment cannot operate well under low gas production loads of the electrolytic hydrogen production system, which can easily affect the hydrogen processing efficiency of the equipment and reduce the operational stability and reliability of the electrolytic hydrogen production system.

[0027] Understandably, hydrogen purification equipment can perform certain gas-liquid separation and deoxygenation on the raw crude hydrogen, allowing the preliminarily purified hydrogen to flow into a drying tower. The drying tower further adsorbs liquid impurities such as water and alkali in the hydrogen, achieving better purification of the hydrogen so that the hydrogen generated by the electrolytic hydrogen production system can meet certain purity requirements.

[0028] After a certain period of drying operation, the drying medium inside the drying tower will reach a certain water saturation state due to the increase in adsorbed moisture. At this point, the drying tower needs to be regenerated to reduce the saturation water adsorbed by the drying medium, so that the drying tower can return to a state where it can better dry the gas and ensure the stable operation of the hydrogen purification equipment. To reduce the contamination during the regeneration of the drying tower, most drying towers use hydrogen output from the electrolysis hydrogen production system to form a regeneration gas flow. This regeneration gas flow is introduced into the drying tower to carry away the moisture adsorbed by the drying medium, thus achieving the regeneration of the drying tower.

[0029] Currently, most hydrogen purification equipment uses drying towers capable of achieving high operating loads to meet the gas preparation requirements of electrolytic hydrogen production systems under high-load conditions. However, high-load drying towers require a certain gas flow rate during regeneration to ensure sufficient regeneration. Unfortunately, when the electrolytic hydrogen production system operates under low-load conditions, it cannot adequately generate the gas flow rate required for sufficient drying tower regeneration, potentially leading to incomplete regeneration and affecting the subsequent drying and purification effect on hydrogen, thus impacting the normal operation of the electrolytic hydrogen production system. To address these issues, this application proposes a hydrogen purification device 100.

[0030] Please see Figures 1 to 4 In one embodiment of this application, the hydrogen purification device 100 includes a drying component 10, an inlet component 30, an outlet component 50, and a regeneration component 70. The drying component 10 includes a first drying tower 11 and a second drying tower 13. The inlet component 30 includes an inlet pipe 31, which is connected to the first drying tower 11 and the second drying tower 13. The outlet component 50 includes an outlet pipe 51, which is connected to the first drying tower 11 and the second drying tower 13. The regeneration component 70 includes an input pipe 71, one end of which is connected to the outlet pipe 51, and the other end of which is connected to the first drying tower 11 and the second drying tower 13 respectively. A hydrogen pressurization device 711 is provided on the input pipe 71.

[0031] In this application, the hydrogen purification equipment 100 can transport hydrogen that has undergone certain gas-liquid separation, deoxygenation and other treatments through the inlet component 30 to the drying component 10 through the inlet pipe 31. The drying component 10 is used to perform certain drying treatment on the hydrogen before outputting it, so that the processed output hydrogen can better meet the required purification requirements.

[0032] The drying assembly 10 includes a first drying tower 11 and a second drying tower 13. When the hydrogen purification equipment 100 is running, the first drying tower 11 is in a drying operation state to dry the hydrogen introduced into the inlet pipe 31, while the second drying tower 13 is in a regeneration state to dehydrate and regenerate the drying medium. After the second drying tower 13 has been regenerated, the operating states of the first drying tower 11 and the second drying tower 13 can be switched, so that the first drying tower 11 is in the regeneration state and the second drying tower 13 is in the drying operation state. Thus, the cooperation of the first drying tower 11 and the second drying tower 13 can be used to achieve the continuous and stable operation of the hydrogen purification equipment 100 and meet the hydrogen production needs of the electrolysis hydrogen production system.

[0033] When the first drying tower 11 or the second drying tower 13 is in the drying operation state, the dried hydrogen can be output from the outlet pipe 51. By setting an input pipe 71 to connect to the outlet pipe 51 and connecting the input pipe 71 to the first drying tower 11 and the second drying tower 13, a portion of the dried hydrogen can be diverted into the input pipe 71. The purified hydrogen after drying is then introduced into the drying tower that needs to be regenerated through the input pipe 71, effectively avoiding the influence of other impurities on the drying tower during the regeneration process and achieving more stable and continuous operation of the hydrogen purification device.

[0034] By installing a hydrogen pressurization device 711 on the input pipe 71, which may include, but is not limited to, a compressor or a gas pump, the hydrogen flowing in the input pipe 71 can be pressurized. Furthermore, when the electrolytic hydrogen production system operates under low load conditions, the pressurized hydrogen can be used as a regeneration gas flow. This allows the regeneration gas flow to be stably input into the drying tower and adsorb the moisture carried on the drying medium. This enables the drying tower to be regenerated stably using a lower amount of hydrogen, achieving stable operation of the hydrogen purification equipment 100 under lower gas production loads. This reduces the limitations imposed by the system operating load on the hydrogen purification equipment 100, allowing it to operate stably under various gas production load conditions in the electrolytic hydrogen production system, further improving the practicality and reliability of the hydrogen purification equipment 100. After the gas is input into the first drying tower 11 or the second drying tower 13 for regeneration treatment, the regenerated gas can be collected, or the regenerated gas can be flowed into the inlet component 30 and mixed with the gas input into the hydrogen purification device 100 for further purification, or the regenerated gas can be input into another purification device for treatment and utilization; this application does not limit the method of recycling and applying the regenerated gas after regeneration treatment.

[0035] The hydrogen purification equipment 100 can be equipped with valves at the interfaces of the inlet pipe 31 and the first drying tower 11, the inlet pipe 31 and the second drying tower 13, the outlet pipe 51 and the first drying tower 11, the outlet pipe 51 and the second drying tower 13, the input pipe 71 and the first drying tower 11, and the input pipe 71 and the second drying tower 13. By controlling the valves at each interface, the flow direction of the gas can be regulated, so that the hydrogen purification equipment 100 can stably control the first drying tower 11 and the second drying tower 13 to alternately perform drying and regeneration operations, ensuring the stable and continuous operation of the hydrogen purification equipment 100 and better meeting the production needs of the electrolysis hydrogen production system.

[0036] In one embodiment of this application, a portion of the dried hydrogen output from the outlet pipe 51 is input as regeneration gas into the first drying tower 11 or the second drying tower 13 via the input pipe 71 for regeneration treatment. The regeneration gas is pressurized by the hydrogen pressurization device 711, which allows the regeneration operation of the first drying tower 11 or the second drying tower 13 to be stably performed using the regeneration gas with higher pressure. This enables the hydrogen purification equipment 100 to operate stably under lower gas production load conditions, reducing the impact of system load conditions on the hydrogen purification equipment 100 and further improving the practicality and structural reliability of the hydrogen purification equipment 100.

[0037] See Figure 2 and Figure 4 In one embodiment of this application, the air outlet assembly 50 further includes a pressure gauge 53 and a regulating valve 55. One end of the input pipe 71, the pressure gauge 53 and the regulating valve 55 are sequentially arranged on the air outlet pipe 51 along the airflow direction, and the pressure gauge 53 is electrically connected to the regulating valve 55.

[0038] In this embodiment, by installing a pressure gauge 53 and a regulating valve 55 on the air outlet pipe 51, the pressure gauge 53 and the regulating valve 55 can be arranged sequentially along the airflow direction, which can be referenced... Figure 2 and Figure 4 The arrow on the gas outlet pipe 51 indicates the direction. At this time, one end of the input pipe 71 can be connected to the side of the gas inlet of the pressure gauge 53 along the airflow direction. The pressure gauge 53 can then be used to stably detect the purified gas output pressure of the hydrogen purification equipment 100. At the same time, the valve opening of the regulating valve 55 can be adjusted according to the detection result, so that the purified gas output pressure of the hydrogen purification equipment 100 can be maintained at a certain value, ensuring the stable gas output of the hydrogen purification equipment 100, and further improving the practicality and reliability of the hydrogen purification equipment 100.

[0039] It is understandable that when the first drying tower 11 or the second drying tower 13 performs regeneration, it usually needs to use high-temperature regeneration gas with a certain temperature for hot blowing regeneration so that the high-temperature regeneration gas can stably remove the moisture adsorbed by the drying medium. Then, it needs to use low-temperature regeneration gas at room temperature or low temperature for cold blowing regeneration so that the drying medium can be restored to a stable state, thereby achieving stable and reliable regeneration of the drying tower.

[0040] See Figure 1 and Figure 2 In one embodiment of this application, the drying assembly 10 further includes a first temperature control device 15, and both the first drying tower 11 and the second drying tower 13 are provided with the first temperature control device 15.

[0041] In this embodiment, the drying assembly 10 can be equipped with a first temperature control device 15 for both the first drying tower 11 and the second drying tower 13. The first temperature control device 15 can be correspondingly set at the position connected to the input pipe 71, so that the regeneration gas flowing into the first drying tower 11 or the second drying tower 13 through the input pipe 71 can first flow through the first temperature control device 15. This is beneficial for using the first temperature control device 15 to control the temperature of the regeneration gas, so that the regeneration gas can stably reach the temperature required for hot blowing regeneration, ensuring the hot blowing regeneration treatment of the drying medium by the high-temperature regeneration gas. After the hot blowing regeneration of the drying tower is completed, the first temperature control device 15 can be controlled to be turned off or the first temperature control device 15 can be controlled to cool the regeneration gas, ensuring that low-temperature regeneration gas can be stably input into the drying tower for cold blowing regeneration, ensuring the stable operation of the hydrogen purification equipment 100, and further improving the practicality and structural reliability of the hydrogen purification equipment 100.

[0042] The temperature control of the regenerated gas is achieved by setting a first temperature control device 15 on the first drying tower 11 and the second drying tower 13, which helps to achieve a more compact overall structure design of the drying component 10, reduce the arrangement of components on the pipeline, and better reduce the construction difficulty of the hydrogen purification equipment 100.

[0043] See Figure 3 and Figure 4 In one embodiment of this application, a second temperature control device 713 is provided on the input pipe 71, and the hydrogen pressurization device 711 and the second temperature control device 713 are arranged sequentially along the airflow direction of the input pipe 71.

[0044] In this embodiment, by providing a second temperature control device 713 on the input pipe 71, the hydrogen pressurization device 711 and the second temperature control device 713 are arranged sequentially along the airflow direction within the input pipe 71. This airflow direction can be referenced... Figure 4 The arrow on the input pipe 71 indicates the direction, and the second temperature control device 713 can stably regulate the temperature of the regeneration gas on the input pipe 71. This is beneficial for pressurizing and controlling the temperature of the regeneration gas in the input pipe 71 before it is input into the first drying tower 11 or the second drying tower 13 for regeneration treatment. This enables stable hot-blowing regeneration and cold-blowing regeneration of the first drying tower 11 or the second drying tower 13, ensuring the stable and reliable operation of the hydrogen purification equipment 100, and further improving the practicality and structural reliability of the hydrogen purification equipment 100.

[0045] By installing a second temperature control device 713 on the input pipeline 71 to control the temperature of the regenerated gas, the second temperature control device 713 can be maintained or replaced more conveniently on the input pipeline 71, thus improving the ease of disassembly and maintenance of the hydrogen purification equipment 100.

[0046] In addition, in some other embodiments, the hydrogen purification equipment 100 may be equipped with a first temperature control device on both the first drying tower 11 and the second drying tower 13, and a second temperature control device on the input pipeline 71. The first and second temperature control devices can be used to achieve two-stage temperature control of the regenerated gas, which helps to stably regulate the temperature of the regenerated gas to the required regeneration temperature, realize reliable regeneration treatment of the first drying tower 11 and the second drying tower 13, ensure the stable and continuous operation of the hydrogen purification equipment 100, and further improve the practicality and reliability of the hydrogen purification equipment 100.

[0047] See Figure 2 and Figure 4 In one embodiment of this application, a filter device 57 is provided on the air outlet pipe 51, and the filter device 57 and one end of the input pipe 71 are arranged sequentially along the airflow direction of the air outlet pipe 51.

[0048] In this embodiment, the filtration device 57 may include, but is not limited to, a particulate filter, an adsorption filter, a catalytic purifier, a membrane separator, a composite filter, etc. By setting the filtration device 57 on the gas outlet pipe 51, the filtration device 57 can stably filter out impurities such as particles and other gases carried in the dried hydrogen, so that the hydrogen purification equipment 100 can output hydrogen with better purity to meet the gas production requirements of the electrolysis hydrogen production system.

[0049] By arranging the filter device 57 and the inlet pipe 71 sequentially along the airflow direction, this airflow direction can be referenced... Figure 2 and Figure 4 The arrow on the outlet pipe 51 indicates the direction, which allows the dried gas to be filtered by the filter device 57 and then diverted into the input pipe 71 to form regeneration gas. This helps to improve the purity of the regeneration gas, reduce the influence of other impurities during the regeneration process of the drying tower, achieve stable and reliable regeneration of the drying tower, and further improve the practicality and structural reliability of the hydrogen purification equipment 100.

[0050] See Figure 2 and Figure 4 In one embodiment of this application, the regeneration component 70 further includes an output pipe 73, one end of which is connected to the first drying tower 11 and the second drying tower 13, and the other end of which is connected to the air inlet pipe 31.

[0051] In this embodiment, by connecting the first drying tower 11 and the second drying tower 13 via the output pipe 73 and connecting the output pipe 73 to the inlet pipe 31, the hydrogen carrying a certain amount of moisture after regeneration treatment in the first drying tower 11 or the second drying tower 13 can enter the output pipe 73 and return the regenerated gas to the inlet pipe 31 via the output pipe 73. This allows the gas to merge with the hydrogen in the inlet pipe 31 and flow into the drying component 10 for further drying, thus realizing the recycling of the regenerated gas in the hydrogen purification equipment 100 and further improving the practicality and reliability of the hydrogen purification equipment 100.

[0052] Under the action of the hydrogen pressurization device 711, the pressurized dry hydrogen is used as regeneration gas and input into the first drying tower 11 or the second drying tower 13 for regeneration treatment. This allows the regeneration gas to flow stably into the output pipe 73 after the regeneration treatment is completed, and then flow stably into the inlet pipe 31 through the output pipe 73 for further drying and circulation. This helps to better ensure the stable operation of the hydrogen purification equipment 100, so that the hydrogen purification equipment 100 can better cope with various system load conditions and ensure the stable gas production operation of the electrolytic hydrogen production system.

[0053] Valves are installed at the interfaces between the output pipe 73 and the first drying tower 11, and at the interfaces between the output pipe 73 and the second drying tower 13. By regulating the valves, the drying tower in the regeneration process can stably flow regeneration gas into the output pipe 73, and ensure the stable operation of the other drying tower in the drying process. This better enables the alternating and continuous operation of the first drying tower 11 and the second drying tower 13, and further improves the structural reliability of the hydrogen purification equipment 100.

[0054] See Figure 2 and Figure 4 In one embodiment of this application, the intake assembly 30 further includes a cooling device 33 and a first gas-liquid separator 35. One end of the output pipe 73, the cooling device 33 and the first gas-liquid separator 35 are sequentially arranged on the intake pipe 31 along the intake direction.

[0055] In this embodiment, by sequentially arranging a cooling device 33 and a first gas-liquid separator 35 along the air intake direction on the air intake pipe 31, and connecting the output pipe 73 to the front side of the air intake end of the cooling device 33 along the air intake direction, the regenerated gas output from the output pipe 73 can enter the air intake pipe 31 and be combined. The cooling device 33 is used to cool and reduce the temperature of the gas in the air intake pipe 31, and the first gas-liquid separator 35 is used to perform gas-liquid separation. This allows the gas to achieve a better drying effect after entering the drying component 10, further improving the structural stability and reliability of the hydrogen purification equipment 100.

[0056] With the help of the cooling device 33 and the first gas-liquid separator 35, the temperature of the regenerated gas during hot blowing regeneration can be effectively reduced, ensuring stable drying of the regenerated gas in the first drying tower 11 or the second drying tower 13. At the same time, the first gas-liquid separator 35 can stably separate the moisture carried by the regenerated gas, thereby better realizing the recycling of the regenerated gas in the hydrogen purification equipment 100. This allows the hydrogen purification equipment 100 to better adapt to various system load conditions, ensuring stable operation of the hydrogen purification equipment 100 under lower gas production loads, and further improving the practicality of the hydrogen purification equipment 100.

[0057] See Figure 2 and Figure 4 In one embodiment of this application, the first gas-liquid separator 35 is provided with a liquid level detection device 351, which is used to detect the liquid level in the first gas-liquid separator 35. The first gas-liquid separator 35 is connected to a drain pipe 353.

[0058] In this embodiment, by setting a liquid level detection device 351 on the first gas-liquid separator 35, the first liquid level detection device 351 may include, but is not limited to, a buoyancy liquid level gauge, a capacitive liquid level gauge, a hydrostatic liquid level gauge, etc. The liquid level detection device 351 can detect the liquid level in the first gas-liquid separator 35 in a timely manner, so that when the liquid level in the first gas-liquid separator 35 reaches a certain height, the liquid level detection device 351 can issue a liquid full signal.

[0059] At this time, the liquid in the first gas-liquid separator 35 can be stably discharged through the drain pipe 353 to avoid the first gas-liquid separator 35 from being full of liquid, which may affect the gas-liquid separation effect. This ensures the stable gas intake effect of the gas intake component 30, realizes the stable recycling of regenerated gas in the hydrogen purification equipment 100, and further improves the practicality and reliability of the hydrogen purification equipment 100.

[0060] The drain pipe 353 can be equipped with a valve to control its opening and closing. This valve can be electrically controlled, allowing the level detection device 351 to be electrically linked with the valve on the drain pipe 353. This facilitates the response of the valve on the drain pipe 353 when the level detection device 351 detects that the liquid level in the first gas-liquid separator 35 has reached a certain height. This enables better automation control of the first gas-liquid separator 35 and improves the ease of operation of the hydrogen purification equipment 100.

[0061] See Figure 2 and Figure 4 In one embodiment of this application, the air intake assembly 30 further includes a second gas-liquid separator 37 and a deoxygenation device 39, which are arranged sequentially along the air intake direction.

[0062] In this embodiment, by sequentially arranging a second gas-liquid separator 37 and a deoxygenation device 39 along the gas intake direction on the intake pipe 31, the crude hydrogen produced by the preparation device can be separated into gas and liquid by the second gas-liquid separator 37 after entering the intake pipe 31, and the deoxygenation device 39 can deoxygenate the separated gas. This allows a certain gas purification operation to be performed during the transport of crude hydrogen in the intake pipe 31, ensuring the purification effect of the hydrogen purification equipment 100 on the gas produced by the preparation device and better meeting the purification gas requirements of the electrolytic hydrogen production system.

[0063] The deoxygenation device 39 may be equipped with a heating mechanism to heat and catalyze the gas as it enters the device, thus achieving better deoxygenation. A cooling mechanism may be integrated at the outlet of the deoxygenation device 39 to cool the heated and deoxygenated hydrogen, allowing it to flow more effectively into the drying assembly 10 via the outlet pipe 51. Alternatively, a cooling device 33 may be installed on the inlet pipe 31, arranged sequentially with the deoxygenation device 39 along the inlet direction. This allows the cooling device 33 to stably cool the deoxygenated hydrogen on the inlet pipe 31, ensuring stable operation of the hydrogen purification equipment 100. At this time, when the regeneration component 70 is also provided with an output pipe 73 connected to the inlet pipe 31 and connected to the first drying tower 11 and the second drying tower 13, the connection end of the output pipe 73 on the inlet pipe 31 can be located between the deoxygenation device 39 and the cooling device 33. This allows the regenerated gas discharged after regeneration treatment to merge with the deoxygenated hydrogen and pass through the cooling device 33 together for cooling. This is beneficial for achieving a compact arrangement of the components of the hydrogen purification equipment 100 and further improving the practicality and structural reliability of the hydrogen purification equipment 100.

[0064] This application also proposes an electrolytic hydrogen production system, which includes a preparation device and a hydrogen purification device 100. The specific structure of the hydrogen purification device 100 is as described in the above embodiments. Since this electrolytic hydrogen production system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0065] The preparation device can be an electrolytic cell or other similar apparatus. The outlet of the preparation device can be connected to the inlet assembly 30 of the hydrogen purification equipment 100, allowing the raw material crude hydrogen produced by the preparation device to flow stably to the hydrogen purification equipment 100. Under the action of the hydrogen purification equipment 100, the gas undergoes purification processes such as gas-liquid separation, deoxygenation, and drying, meeting the purified hydrogen output requirements of the electrolytic hydrogen production system. The electrolytic hydrogen production system may also include a collection device, such as a collection tank or a collection pipeline system. The outlet assembly 50 of the hydrogen purification equipment 100 can be connected to the input of the collection device, allowing the purified hydrogen to be stored in the collection device. This better meets the continuous production needs of the electrolytic hydrogen production system and ensures its stable and reliable operation.

[0066] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A hydrogen gas purification apparatus characterized by comprising: The electrolytic hydrogen production system comprises a preparation device and a hydrogen purification device, wherein the hydrogen purification device is the hydrogen purification device according to any one of claims 1 to 9, and the preparation device is connected with the hydrogen purification device. The electrolytic hydrogen production system comprises a preparation device and a hydrogen purification device, wherein the hydrogen purification device is the hydrogen purification device according to any one of claims 1 to 9, and the preparation device is connected with the hydrogen purification device. The electrolytic hydrogen production system comprises a preparation device and a hydrogen purification device, wherein the hydrogen purification device is the hydrogen purification device according to any one of claims 1 to 9, and the preparation device is connected with the hydrogen purification device. The electrolytic hydrogen production system comprises a preparation device and a hydrogen purification device, wherein the hydrogen purification device is the hydrogen purification device according to any one of claims 1 to 9, and the preparation device is connected with the hydrogen purification device. The electrolytic hydrogen production system comprises a preparation device and a hydrogen purification device, wherein the hydrogen purification device is the hydrogen purification device according to any one of claims 1 to 9, and the preparation device is connected with the hydrogen purification device.

2. The hydrogen purification apparatus of claim 1, wherein, The electrolytic hydrogen production system comprises a preparation device and a hydrogen purification device, wherein the hydrogen purification device is the hydrogen purification device according to any one of claims 1 to 9, and the preparation device is connected with the hydrogen purification device.

3. The hydrogen purification apparatus of claim 1, wherein, The electrolytic hydrogen production system comprises a preparation device and a hydrogen purification device, wherein the hydrogen purification device is the hydrogen purification device according to any one of claims 1 to 9, and the preparation device is connected with the hydrogen purification device.

4. The hydrogen purification apparatus of claim 1, wherein, The electrolytic hydrogen production system comprises a preparation device and a hydrogen purification device, wherein the hydrogen purification device is the hydrogen purification device according to any one of claims 1 to 9, and the preparation device is connected with the hydrogen purification device.

5. The hydrogen purification apparatus of claim 1, wherein, The electrolytic hydrogen production system comprises a preparation device and a hydrogen purification device, wherein the hydrogen purification device is the hydrogen purification device according to any one of claims 1 to 9, and the preparation device is connected with the hydrogen purification device.

6. The hydrogen purification apparatus as claimed in any one of claims 1 to 5, characterized by, The electrolytic hydrogen production system comprises a preparation device and a hydrogen purification device, wherein the hydrogen purification device is the hydrogen purification device according to any one of claims 1 to 9, and the preparation device is connected with the hydrogen purification device.

7. The hydrogen purification apparatus of claim 6, wherein, The electrolytic hydrogen production system comprises a preparation device and a hydrogen purification device, wherein the hydrogen purification device is the hydrogen purification device according to any one of claims 1 to 9, and the preparation device is connected with the hydrogen purification device.

8. The hydrogen purification apparatus of claim 7, wherein, The electrolytic hydrogen production system comprises a preparation device and a hydrogen purification device, wherein the hydrogen purification device is the hydrogen purification device according to any one of claims 1 to 9, and the preparation device is connected with the hydrogen purification device.

9. The hydrogen gas purification apparatus as claimed in any one of claims 1 to 5, characterized by, The electrolytic hydrogen production system comprises a preparation device and a hydrogen purification device, wherein the hydrogen purification device is the hydrogen purification device according to any one of claims 1 to 9, and the preparation device is connected with the hydrogen purification device.

10. An electrolytic hydrogen production system, characterized by, The electrolytic hydrogen production system comprises a preparation device and a hydrogen purification device, wherein the hydrogen purification device is the hydrogen purification device according to any one of claims 1 to 9, and the preparation device is connected with the hydrogen purification device.

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