Circulating type hydrogen purification system and method

Abstract

The invention discloses a circulating type hydrogen purification system and method, and belongs to the technical field of hydrogen purification of water electrolysis hydrogen production, the circulating type hydrogen purification system comprises a deoxidation mechanism, and the deoxidation mechanism is communicated with a hydrogen outlet of a gas-liquid separator of a water electrolysis hydrogen production device; the adsorption drying mechanism is communicated with the deoxidation mechanism, and the adsorption drying mechanism is filled with an adsorbent used for adsorbing moisture; the conveying mechanism is matched with the adsorption drying mechanism; the adsorption drying mechanism comprises an adsorption unit and a drying unit, a regeneration unit; and a cooling unit. The raw material hydrogen is purified through the deoxidation mechanism and the adsorption drying mechanism, under the action of the adsorption drying mechanism and the transportation mechanism, an adsorbent completes online desorption regeneration and is put into use again, the technical problem that in the prior art, a hydrogen purification system is complex to control is solved, and the hydrogen purification efficiency is improved. The technical effect of cyclic utilization of the adsorbent is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen purification for producing hydrogen through water electrolysis, and in particular to a circulating hydrogen purification system and method. Background Art

[0002] Using surplus electricity from renewable energy sources such as wind power and photovoltaic power generation to electrolyze water on a large scale to produce green hydrogen, and then using green hydrogen to further synthesize green ammonia or methanol as fuel, chemical products, or hydrogen storage media, is one of the most feasible and effective technical paths to solve the problem of renewable energy power consumption.

[0003] In existing technologies, the hydrogen produced by water electrolysis requires further purification to remove small amounts of oxygen and large amounts of water vapor, thereby producing high-purity hydrogen suitable for industrial use. The current mainstream hydrogen purification method involves catalytic deoxygenation followed by three-tower adsorption drying. The adsorbent is packed in a fixed bed within the adsorption tower, which prevents effective mobility. The hydrogen adsorption and adsorbent regeneration processes require the repeated switching of numerous automatic valves, making the control process complex and cumbersome. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the existing hydrogen purification system, which is complicated and cumbersome, and to propose a circulating hydrogen purification system.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A first aspect of the present invention provides a circulating hydrogen purification system, comprising: A deoxidation mechanism, one end of which is connected to the hydrogen outlet of the gas-liquid separator of the water electrolysis hydrogen production device, and is used to remove oxygen from the raw hydrogen; An adsorption drying mechanism, the adsorption drying mechanism being connected to the deoxidation mechanism, the adsorption drying mechanism being filled with an adsorbent for adsorbing water vapor, and the adsorption drying mechanism being used for online desorption and regeneration of the adsorbent; a transport mechanism, the transport mechanism being adapted to the adsorption and drying mechanism and being used to transport the adsorbent so that the adsorbent circulates within the adsorption and drying mechanism; Wherein, the adsorption drying mechanism includes: an adsorption unit, the adsorption unit being in communication with the deoxygenation mechanism and being used for adsorbing and dehydrating the deoxygenated hydrogen; a regeneration unit, the regeneration unit being in communication with the adsorption unit and being used for desorption and regeneration of the adsorbent; A cooling unit is connected to the regeneration unit and is used to cool and dry the adsorbent.

[0006] In some feasible embodiments, the deoxygenation mechanism includes: A deoxidizer, the deoxidizer is connected to the water electrolysis hydrogen production device, the deoxidizer is filled with a palladium catalyst, the oxygen in the raw hydrogen reacts with the hydrogen under the action of the palladium catalyst to produce water, and the oxygen in the raw hydrogen is removed. The deoxidizer is also provided with a first heater; A first heat exchanger is provided on a pipeline between the water electrolysis hydrogen production device and the deoxidizer, and the deoxidizer is connected to the water electrolysis hydrogen production device through the first heat exchanger; a cooler, the cooler being in communication with the first heat exchanger and being used for cooling the deoxygenated hydrogen; A gas-water separator is connected to the cooler and is used to separate the deoxygenated hydrogen and liquid condensed water.

[0007] In some feasible embodiments, the adsorption unit includes: a first holding box, the first holding box being connected to the gas-water separator and filled with an adsorbent. After the deoxygenated hydrogen flows into the first holding box, the adsorbent deeply adsorbs the water vapor in the deoxygenated hydrogen, thereby obtaining product hydrogen; A hydrogen main pipe, the hydrogen main pipe being connected to the first containing box; A filter is provided on the hydrogen main pipe, and the filter is connected to the first containing box through the hydrogen main pipe.

[0008] In some feasible embodiments, the cooling unit includes: a third holding box, the third holding box being arranged at the bottom end of the first holding box and being used for holding the regenerated adsorbent; a hydrogen branch pipe, one end of which is connected to the hydrogen main pipe, and the other end of which is connected to the third containing box; A fan, the fan being provided on the hydrogen branch pipe and used for cooling the adsorbent; A flow regulating valve is provided on the hydrogen branch pipe and is used to control the flow of the regenerated hydrogen.

[0009] In some feasible embodiments, the regeneration unit includes: a second holding box, the second holding box being located between the first holding box and the third holding box, with the top of the second holding box being connected to the bottom of the first holding box, and the bottom of the second holding box being connected to the top of the third holding box, the second holding box being used to hold a high-humidity adsorbent; a second heat exchanger, one end of the second heat exchanger being in communication with the second holding tank, and the other end of the second heat exchanger being in communication with the third holding tank and the cooler; The second heater is arranged on the pipeline between the second heat exchanger and the second storage tank, and is used to heat the regenerated hydrogen.

[0010] In some feasible embodiments, the first holding box, the second holding box, and the third holding box are vertically arranged in a tower shape from top to bottom, and a discharge pipe is provided at the bottom end of each of the first holding box, the second holding box, and the third holding box, and the first holding box, the second holding box, and the third holding box are connected to each other through the discharge pipe; Wherein, the discharge pipe is provided with a manual plug-in valve for unloading and an electric rotary feeding valve for unloading.

[0011] In some feasible embodiments, a material level meter is provided in each of the first holding box, the second holding box, and the third holding box, for real-time monitoring of the material level of the adsorbent in the first holding box, the second holding box, and the third holding box; Temperature sensors for monitoring the temperature of the adsorbent are further provided in the first holding box, the second holding box, and the third holding box. The temperature sensors are electrically connected to the flow regulating valve.

[0012] In some feasible embodiments, the transportation mechanism includes: A conveyor, the conveyor being arranged below the discharge pipe at the bottom end of the third containing box; A bucket elevator, which is arranged at one end of the conveyor and is adapted to the conveyor; a chute, the chute being located above the first holding box and adapted to the bucket elevator; Wherein, the first containing box is further provided with a discharge valve adapted to the chute.

[0013] A second aspect of the present invention provides a purification method for a circulating hydrogen purification system, which uses a circulating hydrogen purification system as described in any one of the first aspects. The purification method comprises: S1: introducing raw hydrogen, deoxidizing, dehydrating and adsorbing the raw hydrogen to obtain product hydrogen; S2: replacing the adsorbent in the first holding box according to the saturation level of the adsorbent in the first holding box; S3: According to the temperature deviation value in the second storage box, the flow rate of the regenerated hydrogen is adjusted through the flow regulating valve.

[0014] In some feasible embodiments, adjusting the flow rate of the regenerated hydrogen according to the temperature deviation value in the second storage box further includes: S31, obtaining a temperature deviation value in the second storage box; Among them, temperature deviation value = actual temperature value - preset temperature value S32, adjusting the flow rate of the regenerated hydrogen based on the temperature deviation value; The regulating the flow rate of the regenerated hydrogen based on the temperature deviation value includes: generating regeneration hydrogen flow adjustment information based on the temperature deviation value and the first temperature deviation threshold; The first regeneration hydrogen flow adjustment information is generated based on the temperature deviation value and the first temperature deviation threshold by comparing the temperature deviation value with the first temperature deviation threshold, and generating the regeneration hydrogen flow adjustment information when the temperature deviation value exceeds the first temperature deviation threshold.

[0015] Generating regeneration hydrogen flow adjustment information based on the temperature deviation value and the first temperature deviation threshold includes: S321, generating first regeneration hydrogen flow adjustment information based on the temperature deviation value and the second temperature deviation threshold; The second regeneration hydrogen flow adjustment information is generated based on the temperature deviation value and the second temperature deviation threshold by comparing the temperature deviation value with the second temperature deviation threshold, and generating the first regeneration hydrogen flow adjustment information when the temperature deviation value exceeds the first temperature deviation threshold and is less than the second temperature deviation value.

[0016] The first regenerated hydrogen flow adjustment information includes: The flow rate of the regenerated hydrogen is adjusted based on the temperature deviation value and the second temperature deviation threshold value, specifically in the following manner: ; in, is the regeneration hydrogen flow rate obtained at the current time point, is the regenerated hydrogen flow rate at the previous time point, is the set second temperature deviation threshold; S322, generating second regeneration hydrogen flow adjustment information based on the temperature deviation value and the third temperature deviation threshold; The second regeneration hydrogen flow adjustment information is generated based on the temperature deviation value and the third temperature deviation threshold by comparing the temperature deviation value with the third temperature deviation threshold, and the second regeneration hydrogen flow adjustment information is generated when the temperature deviation value exceeds the second temperature deviation threshold and is less than the third temperature deviation threshold.

[0017] The generating of the second regeneration hydrogen flow rate adjustment information includes: The flow rate of regenerated hydrogen is adjusted based on the temperature deviation value. The specific method is as follows: ; in, is the flow rate of regenerated hydrogen; is the proportionality coefficient; is the integration coefficient, is the differential coefficient, is the temperature deviation value, is the sampling time.

[0018] The integration coefficient The calculation method is: ; in, is the final integral value, is the amplitude, are the minimum integral value and the maximum integral value respectively.

[0019] The method of adjusting the flow rate of the regenerated hydrogen based on the temperature deviation value further includes: S323, generating third regeneration hydrogen flow adjustment information based on the temperature deviation value and the third temperature deviation threshold; The third regeneration hydrogen flow rate adjustment information is generated based on the temperature deviation value and the third temperature deviation threshold by comparing the temperature deviation value with the third temperature deviation threshold, and generating the third regeneration hydrogen flow rate adjustment information when the temperature deviation value exceeds the third temperature deviation threshold.

[0020] The method for adjusting the regeneration hydrogen flow rate based on the temperature deviation value and the third temperature deviation threshold is: ; in, is the proportional term, is the integral term, is the differential term, They are the set minimum and maximum flow thresholds respectively.

[0021] The beneficial effects of the present invention are: The present invention purifies the raw hydrogen through a deoxygenation mechanism and an adsorption drying mechanism, and under the action of the adsorption drying mechanism and the transportation mechanism, the adsorbent completes online desorption regeneration and is put back into use, thereby solving the technical problem of complex control of the hydrogen purification system in the prior art and achieving the technical effect of recycling the adsorbent. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the overall structure of a circulating hydrogen purification system provided in an embodiment of the present invention; The markings in the figure are as follows: 1. Deoxidation mechanism; 11. Deoxidizer; 111. First heater; 12. First heat exchanger; 13. Cooler; 14. Gas-water separator; 2. Adsorption drying mechanism; 21. Adsorption unit; 211. First holding tank; 212. Hydrogen main pipe; 213. Filter; 22. Regeneration unit; 221. Second holding tank; 222. Second heat exchanger; 223. Second heater; 23. Cooling unit; 231. Third holding tank; 232. Hydrogen branch pipe; 233. Fan; 234. Flow control valve; 24. Discharge pipe; 241. Manual gate valve for unloading; 242. Electric rotary feed valve for unloading; 3. Transport mechanism; 31. Conveyor; 32. Bucket elevator; 33. Chute; 34. Discharge valve. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] Reference Figure 1 As shown, in order to solve the shortcomings of the prior art in that the hydrogen purification process is complicated and cumbersome, the present invention provides a circulating hydrogen purification system in an embodiment. The circulating hydrogen purification system is connected to a water electrolysis hydrogen production device, and includes a deoxygenation mechanism 1, an adsorption drying mechanism 2 connected to the deoxygenation mechanism 1, and a transportation mechanism 3 connected to the adsorption drying mechanism 2.

[0028] It should be understood that the circulating hydrogen purification system in the present application needs to operate under positive pressure, and the components of the deoxygenation mechanism 1, the adsorption drying mechanism 2 and the transportation mechanism 3 are all sealed to prevent hydrogen leakage, and each mechanism and pipeline is equipped with corresponding explosion-proof measures, which can effectively prevent and reduce the hazards caused by explosions and improve the overall safety of the system.

[0029] Specifically, the deoxygenation mechanism 1 is connected to the hydrogen outlet of the gas-liquid separator of the water electrolysis hydrogen production device. The deoxygenation mechanism 1 can remove the oxygen contained in the raw hydrogen flowing out of the water electrolysis hydrogen production device to obtain deoxygenated hydrogen; the raw hydrogen refers to the hydrogen produced by the water electrolysis hydrogen production device, which is doped with impurity oxygen and water vapor. The deoxygenated hydrogen refers to the hydrogen obtained after the raw hydrogen is deoxygenated, which does not contain impurity oxygen but contains water vapor.

[0030] In this embodiment, the deoxidation mechanism 1 includes a deoxidizer 11 , a first heat exchanger 12 connected to the deoxidizer 11 , a cooler 13 connected to the first heat exchanger 12 , and a gas-water separator 14 connected to the cooler 13 .

[0031] Specifically, the deoxidizer 11 is connected to the electrolytic water hydrogen production device, and the deoxidizer 11 is filled with a palladium catalyst. After the raw hydrogen enters the deoxidizer 11, it reacts under the action of the palladium catalyst, so that the oxygen in the raw hydrogen reacts with the hydrogen to produce water, thereby removing the impurity oxygen in the raw hydrogen. In this embodiment, since the palladium catalyst is more active at high temperatures, in order to improve the reaction efficiency of the oxygen and hydrogen in the raw hydrogen in the deoxidizer 11, the deoxidizer 11 is further provided with a first heater 111. The first heater 111 adopts an electric heater, which converts electrical energy into thermal energy, thereby heating the raw hydrogen and the palladium catalyst, thereby improving the reaction efficiency of oxygen and hydrogen. It includes but is not limited to a resistive electric heater, and can also be an induction electric heater. Compared with other types of heaters, electric heaters have high heat conversion efficiency and no hidden dangers of open flames, thereby improving the safety of the production process.

[0032] The first heat exchanger 12 is arranged on the pipeline between the water electrolysis hydrogen production device and the deoxidizer 11, and the deoxidizer 11 is connected to the water electrolysis hydrogen production device through the first heat exchanger 12, so that the raw hydrogen first passes through the first heat exchanger 12 and then enters the deoxidizer 11, wherein the first heat exchanger 12 includes a first air inlet, a first air outlet, and a second air inlet and a second air outlet. The first air inlet is connected to the hydrogen outlet of the water electrolysis hydrogen production device, and the first air outlet is connected to the air inlet end of the deoxidizer 11. The deoxidizer 11 is connected to the water electrolysis hydrogen production device through the first heat exchanger 12, that is, the raw hydrogen flows out from the hydrogen outlet of the water electrolysis hydrogen production device, enters the first heat exchanger 12 through the first air inlet, and then flows into the deoxidizer 11 through the first air outlet.

[0033] The first heat exchanger 12 can be, but is not limited to, a shell and tube heat exchanger, and can also be a heat exchanger with heat exchange function such as a plate heat exchanger or a fin heat exchanger. In this embodiment, the first heat exchanger 12 adopts a shell and tube heat exchanger, which is composed of a shell, a tube bundle, a tube sheet and a head. The hot fluid flows in the tubes of the shell and tube heat exchanger, and the heat in the tubes is transferred to the cold fluid outside the tube wall through the tube wall. The cold fluid flows in the shell and absorbs the heat transferred from the hot fluid in the tube, thereby achieving the purpose of heat exchange.

[0034] The second air inlet is connected to the air outlet end of the deoxidizer 11, so that a closed loop is formed between the deoxidizer 11 and the first heat exchanger 12. The raw hydrogen is reacted in the deoxidizer 11 to generate deoxygenated hydrogen, which then flows back into the first heat exchanger 12 through the second air inlet. The heat carried by the deoxygenated hydrogen is used to exchange heat with the raw hydrogen that subsequently flows into the heat exchanger from the water electrolysis hydrogen production device, thereby performing a primary heating on the raw hydrogen before entering the deoxidizer 11, further increasing the temperature of the raw hydrogen and allowing it to react more fully with the palladium catalyst after entering the deoxidizer 11.

[0035] The cooler 13 is connected to the second gas outlet of the first heat exchanger 12 and is used to cool the deoxygenated hydrogen. Since the raw hydrogen is heated in the deoxygenator 11 during the process of being converted into deoxygenated hydrogen, the temperature of the deoxygenated hydrogen flowing out of the deoxygenator 11 is relatively high. After exchanging heat with the raw hydrogen in the first heat exchanger 12, the deoxygenated hydrogen undergoes primary cooling and then flows into the cooler 13 for secondary cooling, so that the water vapor in the deoxygenated hydrogen is condensed into liquid condensed water.

[0036] In some preferred embodiments, the cooler 13 is a water-cooled industrial chiller comprising the cooler 13, a water pump, and a cooling tower. This chiller has high cooling efficiency and low maintenance costs, providing stable and efficient heat dissipation for the deoxygenated hydrogen. More preferably, the cooler 13 utilizes a countercurrent flow principle, whereby the coolant within the cooler 13 flows in the opposite direction to the hydrogen flow, thereby optimizing the cooling effect.

[0037] The gas-water separator 14 is connected to the cooler 13, and is used to separate the deoxygenated hydrogen and liquid condensed water. The gas-water separator 14 can be, but is not limited to, a gravity sedimentation type gas-water separator 14, and can also be a cyclone type gas-water separator 14 or a first-level filter element type gas-water separator 14. In this embodiment, a gravity sedimentation type gas-water separator 14 is adopted. After the deoxygenated hydrogen and condensed water mixture enters the separator, due to the difference in density between the gas and the liquid, under the action of gravity, the liquid settles downward due to its higher density and accumulates at the bottom of the separator to form a liquid layer; the gas flows upward due to its lower density and is discharged from the separator through the gas outlet, thereby achieving the separation of the deoxygenated hydrogen and the liquid condensed water.

[0038] In this embodiment, the adsorption drying mechanism 2 is connected to the deoxygenation mechanism 1. The adsorption drying mechanism 2 is used to adsorb water vapor in the deoxygenated hydrogen. Since the deoxygenated hydrogen is still mixed with some water vapor after the condensed liquid water is removed by the gas-water separator 14, the water vapor in the deoxygenated hydrogen is adsorbed after the deoxygenated hydrogen flows into the adsorption drying mechanism 2, thereby obtaining product hydrogen. It should be understood that the product hydrogen refers to clean pure hydrogen with a purity of 99.8% or above.

[0039] Specifically, the adsorption drying mechanism 2 includes an adsorption unit 21, which is connected to the gas-water separator 14 in the deoxygenation mechanism 1 and is used to adsorb water vapor in the deoxygenated hydrogen. The adsorption unit 21 includes a first holding tank 211 and a filter 213 connected to the first holding tank 211. One end of the first holding tank 211 is connected to the gas-water separator 14. The first holding tank 211 is filled with an adsorbent for adsorbing water vapor, such as activated carbon or molecular sieve. After the deoxygenated hydrogen flows into the first holding tank 211, the adsorbent deeply adsorbs the water vapor in the deoxygenated hydrogen, thereby producing product hydrogen. The other end of the first holding tank 211 is connected to a hydrogen main pipe 212. The filter 213 is arranged on the hydrogen main pipe 212, and the filter 213 is connected to the first storage box 211 through the hydrogen main pipe 212. The filter 213 is used to remove impurities and dust in the product hydrogen. For example, the filter 213 adopts a common filter element filter 213. When the hydrogen containing dust enters the filter 213, it will first contact the filter element. Since the particle size of the dust particles is larger than the size of the filter element pores, when the hydrogen passes through the filter element, the dust particles will be intercepted on the outer surface of the filter element, thereby achieving the filtration and purification of the dust in the hydrogen. The product hydrogen purified by the filter 213 is sent to the hydrogen storage tank for storage.

[0040] In this embodiment, since the adsorbent will gradually become saturated after long-term use and the water absorption efficiency will gradually decrease, the adsorption drying mechanism 2 is also used to desorb and regenerate the adsorbent online to achieve the purpose of recycling.

[0041] The adsorption drying mechanism 2 also includes a regeneration unit 22 and a cooling unit 23 connected to the regeneration unit 22. Specifically, the regeneration unit 22 is connected to the first holding box 211 in the adsorption unit 21, and the regeneration unit 22 is used to perform high-temperature desorption regeneration on the adsorbent. One end of the cooling unit 23 is connected to the hydrogen main pipe 212 in the adsorption unit 21, and the other end is connected to the regeneration unit 22. By introducing part of the product hydrogen in the hydrogen main pipe 212 into the cooling unit 23 as regenerated hydrogen, the adsorbent in the cooling unit 23 is cooled, and the regenerated hydrogen flows into the regeneration unit 22. It should be understood that the regenerated hydrogen refers to the 10~50% product hydrogen diverted through the hydrogen main pipe 212 after being filtered by the filter 213.

[0042] More specifically, the cooling unit 23 is connected to the regeneration unit 22 and is used to cool and dry the adsorbent. The cooling unit 23 includes a third holding tank 231, a hydrogen branch pipe 232 connected to the third holding tank 231, and a fan 233 disposed on the hydrogen branch pipe 232. The third holding tank 231 is disposed at the bottom end of the first holding tank 211 and is used to hold the regenerated adsorbent. One end of the hydrogen branch pipe 232 is connected to the hydrogen main pipe 212, and the other end is connected to the third holding tank 231, so that the product hydrogen in the hydrogen main pipe 212 is introduced into the third holding tank 231 as regenerated hydrogen through the hydrogen branch pipe 232. Since the regenerated adsorbent is in a high-temperature and high-heat state, in order to make the adsorbent reach a usable temperature, the fan 233 is arranged on the hydrogen branch pipe 232. The fan 233 is a booster fan 233. On the one hand, it can dynamically adjust the speed according to the pressure demand of hydrogen, thereby overcoming the resistance of the entire regenerated hydrogen flow through various equipment and pipelines, so that the pressure of the regenerated hydrogen is balanced with that of the raw hydrogen, effectively improving the efficiency and safety of hydrogen transportation. On the other hand, the high-temperature and high-heat adsorbent in the second holding box 221 can be cooled and the waste heat can be recovered to reduce the adsorbent temperature to meet the adsorption working temperature requirements.

[0043] In some preferred embodiments, a flow regulating valve 234 is further provided on the hydrogen branch pipe 232 , and the flow regulating valve 234 is used to control the flow of the regenerated hydrogen entering the hydrogen branch pipe 232 .

[0044] In this embodiment, the regeneration unit 22 includes a second containing tank 221 , a second heat exchanger 222 connected to the second containing tank 221 , and a second heater 223 . Specifically, the second holding box 221 is located between the first holding box 211 and the third holding box 231. The second holding box 221 is used to hold high-humidity adsorbent. The first holding box 211, the second holding box 221 and the third holding box 231 are vertically arranged in a tower shape from top to bottom, and the bottom ends of the first holding box 211, the second holding box 221 and the third holding box 231 are all provided with a discharge pipe 24. The first holding box 211, the second holding box 221 and the third holding box 231 are connected through the discharge pipe 24, that is, the top end of the second holding box 221 is connected to the bottom end of the first holding box 211, and the bottom end of the second holding box 221 is connected to the top end of the third holding box 231, so that the adsorbent in the first holding box 211 can flow into the second holding box 221 and the third holding box 231 in sequence.

[0045] In some preferred embodiments, the first holding box 211, the second holding box 221, and the third holding box 231 are all cone-shaped structures. The cone-shaped structure is a geometric structure similar to a cone or a pyramid, with a circular or polygonal bottom such as a square and a flared top. The overall shape gradually shrinks from top to bottom, so that the adsorbent naturally converges to the bottom discharge port of the first holding box 211, the second holding box 221, and the third holding box 231 by its own gravity, and reduces the possibility of accumulation of the adsorbent during flow.

[0046] One end of the second heat exchanger 222 is connected to the second holding box 221, and the other end is connected to the third holding box 231, wherein the structure of the second heat exchanger 222 is the same as that of the first heat exchanger 12, and the second heat exchanger 222 includes a third air inlet, a third air outlet, and a fourth air inlet and a fourth air outlet. The third air inlet is connected to the air outlet end of the third holding box 231, and the third air outlet is connected to the air inlet end of the second holding box 221. After the regenerated hydrogen flows out of the third holding box 231, it enters the second heat exchanger 222 through the third air inlet and enters the second holding box 221 through the third air outlet.

[0047] Since the desorption of high-humidity adsorbent needs to be carried out in a higher temperature environment, in order to increase the temperature of the regenerated hydrogen entering the second holding box 221, the second heater 223 is arranged on the pipeline between the second heat exchanger 222 and the second holding box 221. The second heat exchanger 222 is composed of a heating element, a thermal insulation layer, a shell, a temperature control system and other parts. For example, the heating element is a resistance wire. When the power is connected, the current passes through the resistance wire, and the electrical energy is converted into heat energy on the resistance wire, causing the temperature of the resistance wire to increase. The heat is then transferred to the object or medium in contact with it by heat conduction, thereby heating the object or medium. When the regenerated hydrogen enters and flows out through the third outlet of the second heat exchanger 222, the regenerated hydrogen is heated by the second heater 223. After the high-temperature regenerated hydrogen enters the second holding box 221, the high-humidity adsorbent in the second holding box 221 is desorbed at high temperature, thereby regenerating the adsorbent. The fourth air inlet is connected to the air outlet end of the second holding box 221, and the fourth air outlet is connected to the air inlet end of the cooler 13, so that a loop is formed between the second holding box 221 and the second heat exchanger 222, so that the regenerated hydrogen flowing out of the second holding box 221 flows back into the second heat exchanger 222 again, and then flows into the cooler 13 to cool the regenerated hydrogen.

[0048] In this embodiment, when the regenerated hydrogen continues to flow into the second heat exchanger 222, the regenerated hydrogen flowing into the second holding tank 221 is heated by the second heater 223, and its heat is much higher than the heat of the regenerated hydrogen flowing into the second heat exchanger 222 from the third holding tank 231. Therefore, the regenerated hydrogen flowing back from the second holding tank 221 into the second heat exchanger 222 and the regenerated hydrogen flowing from the third holding tank 231 into the second heat exchanger 222 are heat-exchanged in the second heat exchanger 222. When the regenerated hydrogen flows into the second holding tank 221, the regenerated hydrogen is heated primarily by the heat exchange in the second heat exchanger 222, and the regenerated hydrogen is heated secondarily by the second heater 223, so that the regenerated hydrogen flowing into the second holding tank 221 reaches the temperature required for adsorbent desorption regeneration.

[0049] When the regenerated hydrogen flows back from the second holding tank 221 into the second heat exchanger 222, the heated regenerated hydrogen can be heat exchanged with the regenerated hydrogen flowing into the second heat exchanger 222 from the third air inlet through the second heat exchanger 222, thereby subjecting the regenerated hydrogen to a first-level cooling. Since the adsorbent in the second holding tank 221 is desorbed, the water generated enters the regenerated hydrogen in the form of water vapor. At this time, both the regenerated hydrogen and the deoxygenated hydrogen are hydrogen containing water. Therefore, the regenerated hydrogen flows into the cooler 13 through the fourth air outlet, merges with the deoxygenated hydrogen, and undergoes the same cooling, dehydration, and adsorption process as the deoxygenated hydrogen to regenerate product hydrogen, thereby realizing the recycling of the regenerated hydrogen and reducing the use cost.

[0050] In this embodiment, the discharge pipe 24 is provided with a manual plug-in valve 241 and an electric rotary feeding valve 242 for discharge, and the electric rotary feeding valve 242 for discharge is located below the manual plug-in valve 241. For example, the manual plug-in valve 241 for discharge is composed of a valve body, a valve plate, an operating rod, a sealing ring and other components. By controlling the operating rod, the discharge pipe 24 is opened and closed to control the flow of the adsorbent in the discharge pipe 24. The electric rotary feeding valve 242 for discharge is composed of a valve body, a valve wheel, a frequency conversion motor, a reducer and a sealing ring and other components. The valve wheel and the valve body form a closed channel. The frequency conversion motor drives the reducer to drive the valve wheel to rotate, thereby achieving precise control and regulation of the material to adjust the flow rate of the adsorbent in the discharge pipe 24. In addition, the rotary feeding valve for discharge needs to have an air locking function to avoid cross-flow between the airflow before and after the valve, thereby affecting the purity of the product hydrogen.

[0051] In some preferred embodiments, each of the first, second, and third holding boxes 211, 221, and 231 is equipped with a level gauge to monitor the amount of adsorbent contained therein in real time. To facilitate real-time monitoring of the adsorbent temperature within each of the first, second, and third holding boxes 211, 221, and 231, temperature sensors are also provided within each of the first, second, and third holding boxes 211, 221, and 231. These temperature sensors are electrically connected to the flow control valve 234. For example, these temperature sensors can be thermocouples, which utilize the thermoelectric effect for temperature measurement, offering fast response and high accuracy. When the temperature monitored by the temperature sensor changes, the flow control valve 234 can be controlled by an external controller to adjust the flow rate of the regenerated hydrogen.

[0052] In this embodiment, in order to achieve the purpose of reusing the adsorbent after desorption, the adsorbent after desorption is refilled into the first holding box 211 for use. The transportation mechanism 3 is adapted to the adsorption drying mechanism 2, one end of which is located at the bottom end of the third holding box 231, and the other end is located at the top end of the first holding box 211. The adsorbent in the third holding box 231 is transported to the first holding box 211 through the transportation mechanism 3, so that the adsorbent circulates in the adsorption drying mechanism 2.

[0053] Specifically, the transport mechanism 3 includes a conveyor 31, a bucket elevator 32 adapted for the conveyor 31, a chute 33 connected to the bucket elevator 32, and a discharge valve 34 adapted for the chute 33. Specifically, the conveyor 31 is disposed below the discharge pipe 24 at the bottom end of the third holding box 231. Preferably, the conveyor 31 is a closed belt conveyor 31, which is composed of a conveyor belt, rollers, a driver, a closed cover, and other components. When the adsorbent in the third holding box 231 falls onto the conveyor 31, the adsorbent is transported by the conveyor belt, and the adsorbent is transferred once. During transfer, the closed cover prevents adsorbent dust from splashing and scattering, thereby improving safety. The bucket elevator 32 is arranged at one end of the conveyor 31 and is adapted to the conveyor 31. For example, the bucket elevator 32 includes a chain, a hopper, a driver and other structures. After the conveyor 31 transports the adsorbent to the bucket elevator 32, the adsorbent falls into the hopper. When the hopper is loaded with the adsorbent, the chain drives the hopper to be lifted to a height adapted to the first containing box 211. When the hopper is lifted to the set position, it automatically flips over and unloads the material, and the adsorbent is transported for the second time. The chute 33 is located above the first holding box 211 and is adapted to the bucket elevator 32. That is, the chute 33 is arranged at an angle, with one end adapted to the bucket elevator 32 and the other end connected to the top of the first holding box 211. That is, the end of the chute 33 close to the bucket elevator 32 is higher than the end connected to the first holding box 211, so that the adsorbent can slide naturally by gravity, and the adsorbent is transferred three times so that the adsorbent is put back into the first holding box 211 for recycling.

[0054] In some preferred embodiments, in order to prevent a large amount of airflow from flowing in when the adsorbent falls into the first holding box 211, the discharge valve 34 is provided on the first holding box 211 and is adapted to the chute 33, that is, at the connection between the chute 33 and the first holding box 211, the discharge valve 34 is a double-layer weight hammer flap valve, the working principle of which is to use the gravity of the material itself to open the flap for unloading. When the material stops falling, the flap returns to a closed state under the action of the weight hammer, thereby preventing the influx of airflow and reducing the scattering and flying of the adsorbent.

[0055] Reference Figure 1In a second aspect, the present application further provides a circulating hydrogen purification method, which is based on a circulating hydrogen purification system described in the above scheme, and comprises: S1: introducing raw hydrogen, deoxidizing, dehydrating and adsorbing the raw hydrogen to obtain product hydrogen; In this step, the raw hydrogen is heated in the first heat exchanger 12 and then flows into the deoxidizer 11. It is heated in the second stage under the action of the first heater 111 to make the temperature of the raw hydrogen reach the reaction temperature requirement with the palladium catalyst. In the deoxidizer 11, the raw hydrogen undergoes a chemical reaction under the catalyst and high temperature conditions to generate water, thereby removing the impurity oxygen in the raw hydrogen to generate deoxygenated hydrogen. The deoxygenated hydrogen flows back to the first heat exchanger 12 again to exchange heat with the raw hydrogen flowing out of the hydrogen outlet of the gas-liquid separator of the water electrolysis hydrogen production device. After the primary cooling of the deoxygenated hydrogen, it flows into the cooler 13 for secondary cooling. At this time, the water vapor in the deoxygenated hydrogen is converted into condensed water after cooling, and flows into the gas-water separator 14 to separate and remove the condensed water. The raw hydrogen after dehydration then enters the first holding box 211 in the adsorption unit 21, and is deeply adsorbed and dehydrated by the adsorbent to obtain product hydrogen. In the process of passing through the hydrogen main pipe 212, the product hydrogen is filtered by the filter 213 to obtain pure hydrogen with higher purity and sent to the hydrogen storage tank for storage.

[0056] S2: replacing the adsorbent in the first holding box 211 according to the saturation level of the adsorbent in the first holding box 211; The saturation level of the adsorbent in the first holding box 211 can be determined by the amount of raw hydrogen gas introduced. When the amount of deoxygenated hydrogen gas introduced into the first holding box 211 exceeds a set introduction threshold, it indicates that the adsorbent has reached saturation and the adsorbent in the first holding box 211 needs to be replaced. Among them, the method of replacing the adsorbent in the first holding box 211 is to flow the adsorbent after absorbing water in the first holding box 211 into the second holding box 221 for desorption and regeneration through the unloading electric rotary feeding valve 242, and the adsorbent after desorption and regeneration in the second holding box 221 flows into the third holding box 231 for cooling, and the adsorbent in the third holding box 231 after cooling is unloaded to the conveyor 31, and the desorbed and cooled adsorbent in the third holding box is refilled into the first holding box 211 through the transportation mechanism 3.

[0057] S3. According to the temperature deviation value in the second holding box 221, the flow rate of the regenerated hydrogen is adjusted through the flow regulating valve 234; It is understood that if the flow rate of the regenerated hydrogen gas introduced into the second holding tank 221 is too large, the adsorbent in the second holding tank 221 after the adsorption treatment can be fully dried, but this will increase energy consumption and production costs. If the flow rate of the regenerated hydrogen gas is too small, the adsorbent in the second holding tank 221 after the adsorption treatment cannot be fully dried. Therefore, in order to accurately control the flow rate of the regenerated hydrogen gas introduced into the second holding tank, the flow rate of the regenerated hydrogen gas is adjusted according to the temperature deviation value in the second holding tank 221, including: S31, obtaining the temperature deviation value in the second containing box 221; Among them, temperature deviation value = actual temperature value - preset temperature value; The actual temperature value can be obtained by a temperature sensor provided in the second containing box 221 , and the preset temperature value can be obtained based on a database, historical data or experimental analysis.

[0058] S32, adjusting the flow rate of the regenerated hydrogen based on the temperature deviation value; The regulating the flow rate of the regenerated hydrogen based on the temperature deviation value includes: generating regeneration hydrogen flow adjustment information based on the temperature deviation value and the first temperature deviation threshold; The first temperature deviation threshold may be set based on a database, historical data, or experimental analysis.

[0059] In some embodiments, the first adjustment information of the regeneration hydrogen flow rate based on the temperature deviation value and the first temperature deviation threshold can be generated by comparing the temperature deviation value with the first temperature deviation threshold value, and generating the regeneration hydrogen flow rate adjustment information when the temperature deviation value exceeds the first temperature deviation threshold value. For example, when the temperature deviation value exceeds the first temperature deviation threshold value, the regeneration hydrogen flow rate is increased to reduce the temperature deviation, so that the temperature deviation is stabilized within the first temperature deviation threshold value, and the adsorbent is fully dried while reducing energy consumption.

[0060] Generating regeneration hydrogen flow adjustment information based on the temperature deviation value and the first temperature deviation threshold includes: S321, generating first regeneration hydrogen flow adjustment information based on the temperature deviation value and the second temperature deviation threshold; The second temperature deviation threshold may also be set based on a database, historical data or experimental analysis; In some embodiments, the generating of the second regeneration hydrogen flow rate adjustment information based on the temperature deviation value and the second temperature deviation threshold value may be performed by comparing the temperature deviation value with the second temperature deviation threshold value, and generating the first regeneration hydrogen flow rate adjustment information when the temperature deviation value exceeds the first temperature deviation threshold value and is less than the second temperature deviation value; The first regenerated hydrogen flow adjustment information includes: The flow rate of the regenerated hydrogen is adjusted based on the temperature deviation value and the second temperature deviation threshold value, specifically in the following manner: ; in, is the regeneration hydrogen flow rate obtained at the current time point, is the regenerated hydrogen flow rate at the previous time point, is the set second temperature deviation threshold; The reason for the above is that when the temperature deviation value exceeds the first temperature deviation threshold in a small range, by setting the first regeneration hydrogen flow adjustment information to maintain a stable flow, frequent adjustments can be reduced, energy consumption can be reduced, and the service life of the equipment can be extended.

[0061] S322, generating second regeneration hydrogen flow adjustment information based on the temperature deviation value and the third temperature deviation threshold; In some embodiments, the second regeneration hydrogen flow rate adjustment information is generated based on the temperature deviation value and the third temperature deviation threshold value by comparing the temperature deviation value with the third temperature deviation threshold value, and generating the second regeneration hydrogen flow rate adjustment information when the temperature deviation value exceeds the second temperature deviation threshold value and is less than the third temperature deviation threshold value; The generating of the second regeneration hydrogen flow rate adjustment information includes: The flow rate of regenerated hydrogen is adjusted based on the temperature deviation value. The specific method is as follows: ; in, is the flow rate of regenerated hydrogen; is the proportionality coefficient; is the integration coefficient, is the differential coefficient, is the temperature deviation value, is the sampling time; In some embodiments, the integral coefficient The calculation method is: ; in, is the final integration coefficient, is the amplitude, are the minimum integral coefficient and the maximum integral coefficient respectively; By setting the minimum and maximum values ​​of the integral coefficient, the integral coefficient is limited to avoid distortion due to changes in the temperature deviation value, thereby preventing calculation errors in the process of adjusting the regenerated hydrogen flow.

[0062] In some embodiments, adjusting the flow rate of the regenerated hydrogen based on the temperature deviation value further includes: S323, generating third regeneration hydrogen flow adjustment information based on the temperature deviation value and the third temperature deviation threshold; The third temperature deviation threshold can be set based on a database, historical data or experimental analysis; In some embodiments, the generating of the third regeneration hydrogen flow rate adjustment information based on the temperature deviation value and the third temperature deviation threshold value may be performed by comparing the temperature deviation value with the third temperature deviation threshold value, and generating the third regeneration hydrogen flow rate adjustment information when the temperature deviation value exceeds the third temperature deviation threshold value; The method for adjusting the regeneration hydrogen flow rate based on the temperature deviation value and the third temperature deviation threshold is: ; in, is the proportionality coefficient, is the integration coefficient, is the differential coefficient, They are the set minimum and maximum flow thresholds respectively; When the temperature deviation value exceeds the third temperature deviation threshold, if the flow rate of the regenerated hydrogen is adjusted significantly, it may cause the regenerated hydrogen to flow at a large flow rate, causing the regenerated hydrogen flow rate to exceed the safe range and cause system failure. By setting the minimum and maximum thresholds of the regeneration flow rate, the flow rate of the regenerated hydrogen is controlled to remain within the safe range, thereby improving the safety of the system during operation.

[0063] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A circulating hydrogen purification system, characterized in that: include: A deoxygenation mechanism (1), the deoxygenation mechanism (1) being connected to a hydrogen outlet of a gas-liquid separator of a water electrolysis hydrogen production device and being used for removing oxygen from raw hydrogen; An adsorption drying mechanism (2), the adsorption drying mechanism (2) being connected to the deoxidation mechanism (1), the adsorption drying mechanism (2) being filled with an adsorbent for adsorbing water vapor, and the adsorption drying mechanism (2) being used for online desorption and regeneration of the adsorbent; A transport mechanism (3), the transport mechanism (3) being compatible with the adsorption and drying mechanism (2) and being used for transporting the adsorbent so that the adsorbent circulates in the adsorption and drying mechanism (2); Wherein, the adsorption drying mechanism (2) comprises: An adsorption unit (21), the adsorption unit (21) being connected to the deoxygenation mechanism (1) and being used for adsorbing and dehydrating the deoxygenated hydrogen; A regeneration unit (22), the regeneration unit (22) being connected to the adsorption unit (21) and used for desorption and regeneration of the adsorbent; A cooling unit (23), the cooling unit (23) being connected to the regeneration unit (22) and being used for cooling and drying the adsorbent.

2. A circulating hydrogen purification system according to claim 1, characterized in that: The deoxidation mechanism (1) comprises: A deoxidizer (11), the deoxidizer (11) is connected to the water electrolysis hydrogen production device, the deoxidizer (11) is filled with a palladium catalyst, the oxygen in the raw hydrogen reacts with the hydrogen under the action of the palladium catalyst to generate water, and the oxygen in the raw hydrogen is removed, and the deoxidizer (11) is also provided with a first heater (111); a first heat exchanger (12), wherein the first heat exchanger (12) is arranged on a pipeline between the water electrolysis hydrogen production device and the deoxidizer (11), and the deoxidizer (11) is connected to the water electrolysis hydrogen production device via the first heat exchanger (12); a cooler (13), the cooler (13) being in communication with the first heat exchanger (12) and being used for cooling the deoxygenated hydrogen; A gas-water separator (14), the gas-water separator (14) being connected to the cooler (13), and the gas-water separator (14) being used to separate the deoxygenated hydrogen gas and the liquid condensed water.

3. A circulating hydrogen purification system according to claim 2, characterized in that: The adsorption unit (21) comprises: a first containing box (211), the first containing box (211) being in communication with the gas-water separator (14), the first containing box (211) being filled with an adsorbent, and after the deoxygenated hydrogen flows into the first containing box (211), the adsorbent deeply adsorbs the water vapor in the deoxygenated hydrogen, thereby obtaining product hydrogen; A hydrogen main pipe (212), the hydrogen main pipe (212) being in communication with the first containing box (211); A filter (213), wherein the filter (213) is arranged on the hydrogen main pipe (212), and the filter (213) is connected to the first containing box (211) through the hydrogen main pipe (212).

4. A circulating hydrogen purification system according to claim 3, characterized in that: The cooling unit (23) comprises: a third containing box (231), the third containing box (231) being arranged at the bottom end of the first containing box (211), the third containing box (231) being used to contain the regenerated adsorbent; A hydrogen branch pipe (232), one end of the hydrogen branch pipe (232) being connected to the hydrogen main pipe (212), and the other end of the hydrogen branch pipe (232) being connected to the third containing box (231); A fan (233), the fan (233) being arranged on the hydrogen branch pipe (232) and used for cooling the adsorbent; A flow regulating valve (234), the flow regulating valve (234) is arranged on the hydrogen branch pipe (232) and is used to control the flow of the regenerated hydrogen.

5. A circulating hydrogen purification system according to claim 4, characterized in that: The regeneration unit (22) comprises: a second containing box (221), the second containing box (221) being located between the first containing box (211) and the third containing box (231), and the top end of the second containing box (221) being connected to the bottom end of the first containing box (211), and the bottom end of the second containing box (221) being connected to the top end of the third containing box (231), and the second containing box (221) being used for containing a high-humidity adsorbent; a second heat exchanger (222), one end of the second heat exchanger (222) being connected to the second containing box (221), and the other end of the second heat exchanger (222) being connected to the third containing box (231) and the cooler (13); A second heater (223), the second heater (223) is arranged on a pipeline between the second heat exchanger (222) and the second storage box (221), and the second heater (223) is used to heat the regenerated hydrogen.

6. A circulating hydrogen purification system according to claim 5, characterized in that: The first containing box (211), the second containing box (221) and the third containing box (231) are vertically arranged in a tower shape from top to bottom, and a discharge pipe (24) is arranged at the bottom end of each of the first containing box (211), the second containing box (221) and the third containing box (231), and the first containing box (211), the second containing box (221) and the third containing box (231) are connected to each other via the discharge pipe (24); The discharge pipe (24) is provided with a manual gate valve (241) for material discharge and an electric rotary feed valve (242) for material discharge.

7. A circulating hydrogen purification system according to claim 5, characterized in that: The first containing box (211), the second containing box (221), and the third containing box (231) are each provided with a material level meter for real-time monitoring of the material level of the adsorbent in the first containing box (211), the second containing box (221), and the third containing box (231); Temperature sensors for monitoring the temperature of the adsorbent are also provided in the first containing box (211), the second containing box (221), and the third containing box (231), and the temperature sensors are electrically connected to the flow regulating valve (234).

8. A circulating hydrogen purification system according to claim 6, characterized in that: The transport mechanism (3) comprises: a conveyor (31), the conveyor (31) being arranged below the discharge pipe (24) at the bottom end of the third containing box (231); A bucket elevator (32), the bucket elevator (32) being arranged at one end of the conveyor (31) and being adapted to the conveyor (31); a chute (33), the chute (33) being located above the first containing box (211) and being adapted to fit the bucket elevator (32); The first containing box (211) is also provided with a discharge valve (34) adapted to the chute (33).

9. A purification method for a circulating hydrogen purification system, characterized in that: A circulating hydrogen purification system according to any one of claims 1 to 8 is used, wherein the purification method comprises: S1: introducing raw hydrogen, deoxygenating, dehydrating and adsorbing the raw hydrogen to obtain product hydrogen; S2: replacing the adsorbent in the first containing box (211) according to the saturation level of the adsorbent in the first containing box (211); S3: According to the temperature deviation value in the second containing box (221), the flow rate of the regenerated hydrogen is adjusted through the flow rate regulating valve (234).

10. The purification method of a circulating hydrogen purification system according to claim 9, characterized in that: According to the temperature deviation value in the second containing box (221), the flow rate of the regenerated hydrogen is adjusted, and further comprising: S31, obtaining a temperature deviation value in the second containing box (221); Among them, temperature deviation value = actual temperature value - preset temperature value; S32, adjusting the flow rate of the regenerated hydrogen based on the temperature deviation value; The method of adjusting the flow rate of the regenerated hydrogen based on the temperature deviation value includes: Generate regeneration hydrogen flow adjustment information based on the temperature deviation value and the first temperature deviation threshold; The first adjustment information of the regeneration hydrogen flow rate is generated based on the temperature deviation value and the first temperature deviation threshold by comparing the temperature deviation value with the first temperature deviation threshold, and generating the regeneration hydrogen flow rate adjustment information when the temperature deviation value exceeds the first temperature deviation threshold; Generating the regeneration hydrogen flow adjustment information based on the temperature deviation value and the first temperature deviation threshold includes: S321, generating first regeneration hydrogen flow adjustment information based on the temperature deviation value and the second temperature deviation threshold; The second regeneration hydrogen flow rate adjustment information is generated based on the temperature deviation value and the second temperature deviation threshold by comparing the temperature deviation value with the second temperature deviation threshold, and generating the first regeneration hydrogen flow rate adjustment information when the temperature deviation value exceeds the first temperature deviation threshold and is less than the second temperature deviation value; The first regeneration hydrogen flow adjustment information includes: The flow rate of the regenerated hydrogen is adjusted based on the temperature deviation value and the second temperature deviation threshold, specifically in the following manner: ； in, is the regeneration hydrogen flow rate obtained at the current time point, is the regenerated hydrogen flow rate at the previous time point, is a set second temperature deviation threshold; S322, generating second regeneration hydrogen flow adjustment information based on the temperature deviation value and the third temperature deviation threshold; The second regeneration hydrogen flow rate adjustment information is generated based on the temperature deviation value and the third temperature deviation threshold by comparing the temperature deviation value with the third temperature deviation threshold, and the second regeneration hydrogen flow rate adjustment information is generated when the temperature deviation value exceeds the second temperature deviation threshold and is less than the third temperature deviation threshold; The generating of the second regeneration hydrogen flow rate adjustment information includes: The flow rate of regenerated hydrogen is adjusted based on the temperature deviation value, specifically: ； in, is the flow rate of regenerated hydrogen; is the proportionality coefficient; is the integration coefficient, is the differential coefficient, is the temperature deviation value, is the sampling time; The integral coefficient is calculated as follows: ； in, is the final integration coefficient, is the amplitude, are the minimum integral coefficient and the maximum integral coefficient respectively; The method of adjusting the flow rate of the regenerated hydrogen based on the temperature deviation value further includes: S323, generating third regeneration hydrogen flow adjustment information based on the temperature deviation value and the third temperature deviation threshold; The third regeneration hydrogen flow rate adjustment information is generated based on the temperature deviation value and the third temperature deviation threshold by comparing the temperature deviation value with the third temperature deviation threshold, and generating the third regeneration hydrogen flow rate adjustment information when the temperature deviation value exceeds the third temperature deviation threshold; The method of adjusting the regeneration hydrogen flow rate based on the temperature deviation value and the third temperature deviation threshold is: ； Among them, among them, is the proportional term, is the integral term, is the differential term, They are the set minimum and maximum flow thresholds respectively.

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