40results about "Hydrogen isotopes" patented technology

The invention relates to a membrane electrode and application thereof in deuterium-enriched water, and belongs to the field of clean energy development and utilization. The membrane electrode comprises a proton exchange membrane, an anode catalyst and a cathode catalyst, the anode catalyst is an iridium / iridium oxide catalyst with a three-dimensional porous network structure, and the cathode catalyst is a platinum-ruthenium alloy catalyst. The preparation method comprises the following steps: coating one side of the N117 proton exchange membrane with the anode catalyst, coating the other side of the N117 proton exchange membrane with the cathode catalyst, and then performing hot pressing to prepare the membrane electrode. The method comprises the following steps: assembling a membrane electrode into an electrolytic cell, and electrolyzing water by using the electrolytic cell to realize deuterium enrichment. The membrane electrode and the electrolytic cell are reasonable in design, the preparation process is simple and controllable, and the obtained product is high in efficiency and long in service life when used for enriching deuterium and facilitates industrial application.

The application discloses a heavy water recovery device of a deuterium generator, which comprises a cooling box, a collecting box, a heat exchange device and a condenser pipe, an installation groove is arranged on the cooling box, an installation rod is arranged in the installation groove, an upper top groove is arranged on the installation rod, a positioning rod is arranged in the upper top groove through an upper top mechanism, positioning holes are arranged on the cooling box, a driving motor is arranged on the positioning rod, a driving gear is rotatably arranged on the upper end surface of the cooling box, the driving motor is connected with the driving gear through a clamping mechanism, and a screw rod is rotatably arranged on the cooling box through a supporting plate. The device is provided with a screw rod, a threaded sleeve, a connecting rod and a scraping ring, the water film on the inner wall of the condenser pipe can be scraped and collected, and the recycling effect of the reclaimed water is ensured; the device is provided with a driving gear, a transmission gear, a screw rod and a connecting rod, the synchronous movement of the two scraping rings is realized, and the transmission and linkage effects of the device are ensured.

To provide a deuterium recycling method and recycling apparatus that can recover and recycle deuterium (D2) contained in exhaust gases emitted from processes utilizing deuterium. [Solution] A method for recycling deuterium, comprising: a recovery step of recovering exhaust gas containing light hydrogen (H2) and deuterium, which is discharged from a process utilizing deuterium (D2), by contacting it with an adsorbent capable of adsorbing them; and a desorption step of desorbing light hydrogen and deuterium from the adsorbent. The desorption step includes a light hydrogen separation step carried out under a first condition in which light hydrogen is preferentially desorbed from the adsorbent, and a deuterium separation step carried out under a second condition in which deuterium is preferentially desorbed from the adsorbent. The method for recycling deuterium according to this disclosure includes a step of supplying the gas containing deuterium obtained in the deuterium separation step as a raw material gas in the process.

To provide a hydrogen isotope separation system capable of achieving stabilization of operation.SOLUTION: A hydrogen isotope separation system 10 comprises an electrolyzer 12, a separator 14, a coupler 15, a circulation flow passage 10e, a pump 18, and a control device 21 which controls the pump 18. The electrolyzer 12 performs electrolysis upon water including heavy water. The separator 14 separates a hydrogen isotope which is discharged from the electrolyzer 12. The coupler 15 generates power with light hydrogen which is discharged from the separator 14. The circulation flow passage 10e connects an anode supply path 10a and an anode discharge path 10c which are provided with respect to an anode 15b of the coupler 15 to which the light hydrogen is supplied while detouring the coupler 15. The pump 18 circulates fluid from the anode discharge path 10c toward the anode supply path 10a in the circulation flow passage 10e.SELECTED DRAWING: Figure 1

This invention provides a hydrogen isotope separation system that can suppress increases in power consumption. [Solution] The hydrogen isotope separation system 10 includes a separator 15 having an ion exchange membrane 15a, an anode 15b, and a cathode 15c. The hydrogen isotope separation system 10 includes an anode supply path 10a that supplies heavy water containing light water toward the anode 15b, and a cathode supply path 10b that supplies an inert gas toward the cathode 15c. The hydrogen isotope separation system 10 includes a heat transfer medium circuit 30 that supplies a heat transfer medium to an anode-side humidifier 14A located in the anode supply path 10a, a cathode-side humidifier 14B located in the cathode supply path 10b, and the separator 15. The heat transfer medium circuit 30 heats the anode-side humidifier 14A with the heat transfer medium after heating the cathode-side humidifier 14B.

This invention provides a deuterium ammonia production apparatus that enables economical and efficient production of deuterium ammonia using a flow system, without requiring a subsequent separation process that involves the supply of catalysts or large amounts of carrier gas. [Solution] A deuterated ammonia production apparatus having an absorption tower section consisting of one or more stages, the absorption tower section comprising a packing section consisting of packing material, an ammonia gas introduction section for introducing ammonia gas, a deuterated solvent introduction section for introducing a deuterated solvent, a deuterated ammonia gas discharge section for discharging deuterated ammonia gas, and a deuterated solvent discharge section for discharging deuterated solvent, wherein within the absorption tower section, the deuterated solvent flows downward through the packing section while the ammonia gas flows upward through the packing section, thereby causing the absorption of the ammonia gas into the deuterated solvent and an isotope exchange reaction to occur within the packing section, producing deuterated ammonia gas.

The application provides a catalytic regular packing structure for hydrogen-water isotope catalytic exchange and a preparation method thereof. The catalytic regular packing structure is divided into an embedded type and an integrated type. The hydrophilic packing of the embedded type includes at least two layers of hydrophilic packing sheets as a supporting skeleton; the hydrophobic catalyst is a granular, strip-shaped, pellet, cylindrical, Raschig ring or Michiyori ring hydrophobic catalyst particle, and the hydrophobic catalyst particle is at least partially arranged between adjacent hydrophilic packing sheets. The hydrophobic catalyst of the integrated type is a hydrophobic catalyst plate, and the hydrophilic packing and the hydrophobic catalyst plate are alternately placed according to the use ratio. The wall flow ring is arranged at the outer periphery of the hydrophilic packing; the hoop is arranged at the outer periphery of the wall flow ring, and the hydrophilic packing and the hydrophobic catalyst are wrapped and reinforced. The application provides a high-efficiency catalytic regular packing structure, which can effectively combine the hydrophobic catalyst and the hydrophilic packing, fix the gas phase channel and make the liquid phase uniformly dispersed, and can effectively avoid the amplification effect of the packing.

The invention belongs to the technical field of isotope preparation, and particularly relates to a system and method for producing hydrogen isotopes with low energy consumption. The embodiment of the invention provides a system and a method for producing hydrogen isotopes with low energy consumption. The system comprises a power supply, a first storage tank, a steam generation heater, a heat recovery solid oxide tank, a gas-water condensation separator, a second storage tank, a gas cylinder storage tank and a purification separation column, heavy water in the first storage tank enters a steam generation heater to be heated into heavy water steam, and then enters a heat recovery solid oxide tank to be continuously electrolyzed and heated; and the cathode electrode of the heat recovery solid oxide tank generates high-temperature deuterium gas, and finally high-purity deuterium gas is separated and produced through the purification column. Due to the design of heat exchange, the heat loss of the system is reduced, the technological process is simple and efficient, the utilization rate of raw materials is increased, good economic practicability is achieved, the problem of high energy consumption in the application process of the solid oxide technology is solved, the product cost is reduced, and industrial application is promoted.

The application discloses an in-situ surface modification method for enhancing the CO2 and CO poisoning resistance of high-density metal-based alloy, which comprises the following steps: 1) carrying out surface modification on the activated dehydrogenated ZrCo-based alloy in a mixed gas of H2 and a modification gas at 350-450 DEG C; the modification gas is at least one of N2 and CO2; and 2) under the condition of dynamic evacuation, cooling the alloy processed in the step 1) to obtain a ZrCo-based alloy with CO2 and CO poisoning resistance. The application adopts the modification strategy of in-situ surface reconstruction, and solves the problem of poor CO2 and CO poisoning resistance of the ZrCo-based alloy. The application has the advantages of simple steps, low cost and high safety, and has important significance for promoting the application and popularization of the ZrCo-based alloy in the field of hydrogen energy.

This application discloses a fusion reactor ash gas treatment device, belonging to the field of fusion reactor technology. The fusion reactor ash gas treatment device includes: a shell forming a vacuum chamber; a gas supply unit for inputting ash gas into the vacuum chamber; an inductively coupled plasma generator for generating plasma from the ash gas input into the vacuum chamber; a hydrogen selective membrane disposed within the vacuum chamber, dividing the vacuum chamber into a first chamber and a second chamber; the inductively coupled plasma generator is at least partially located in the first chamber; deuterium ions and tritium ions pass through the hydrogen selective membrane into the second chamber and combine to form deuterium-tritium gas; a bias power supply electrically connected to the hydrogen selective membrane for applying a negative bias voltage; a first discharge section connected to the first chamber; and a second discharge section connected to the second chamber. This device achieves rapid treatment and recycling of the ash gas, is not only compact and easy to operate, but also reduces the amount of deuterium-tritium gas retained and energy consumption, improving operational reliability.

The invention discloses a fusion reactor multi-working-condition full-range hydrogen isotope separation method, which adopts any mode of series connection and / or parallel connection of a plurality of low-temperature rectification systems, series connection and / or parallel connection of a plurality of low-heat cycle adsorption systems, series connection and / or parallel connection of the low-temperature rectification systems and the heat cycle adsorption systems aiming at multiple working conditions of a fusion reactor. The multiple working conditions of the fusion reactor comprise any one of deuterium and tritium gas separation with the tritium content larger than or equal to 1%, deuterium and tritium gas separation with the trace tritium content and ternary gas hydrogen-deuterium-tritium mixed separation. According to the invention, the series connection and parallel connection design of two hydrogen isotope separation processes is adopted, the requirements of treatment of different gases in the fusion reactor and material flow balance during continuous treatment are considered, and the requirement of continuous treatment of hydrogen isotope gases in the fusion reactor is realized.

Methods and systems directed to the separation of a heavy hydrogen isotope, e.g., tritium, from an aqueous stream are described. The methods and systems incorporate a separation media that includes a proton conducting ceramic that at low temperatures preferentially adsorbs heavy hydrogen isotopes and at high temperature preferentially adsorbs lighter heavy hydrogen isotopes. The methods can be temperature controlled to sequentially purify a contaminated stream and regenerate the separation media. The separation media can be free of traditional hydrogen isotope exchange catalyst materials.

The invention discloses a fusion reactor discharged ash gas treatment device, and belongs to the technical field of fusion reactors. The fusion reactor discharged ash gas treatment device comprises a shell forming a vacuum chamber; the gas supply part is used for inputting ash discharge gas into the vacuum chamber; the inductively coupled plasma generating device is used for enabling the discharged ash gas input into the vacuum chamber to generate plasma; the hydrogen selective membrane is arranged in the vacuum chamber and divides the vacuum chamber into a first cavity and a second cavity, the inductively coupled plasma generating device is at least partially located in the first cavity, and deuterium ions and tritium ions enter the second cavity through the hydrogen selective membrane and are combined to form deuterium and tritium gas; the bias power supply is electrically connected with the hydrogen selection membrane and is used for applying bias voltage with negative potential; the first discharge part is communicated with the first cavity; and the second discharge part is communicated with the second cavity. The deuterium and tritium gas treatment device not only is compact in structure and simple and convenient to operate, but also can reduce the retention volume and energy consumption of deuterium and tritium gas, and improves the operation reliability.

The invention provides a system and a method for extracting lithium from seawater and coupling to prepare deuterium gas. The system for extracting lithium from seawater and coupling to prepare deuterium gas comprises a desalination treatment part, an adsorption part, a concentration part, a filtering part and an evaporation electrolysis part which are sequentially connected in series. The desalting treatment part can be used for desalting seawater to produce strong brine; the adsorption part can adsorb and desorb strong brine to produce lithium-rich water. And the concentration part can be used for concentrating the lithium-rich water. And the filtering part can filter the lithium-rich water. The evaporation electrolysis part can evaporate the lithium-rich water to produce lithium ion crystals and crude heavy water, and then electrolyze the crude heavy water to obtain deuterium gas. The output end and the input end of the desalting treatment part are connected to enable strong brine to flow back, and the desalting treatment part is also connected with the backwashing water input end of the filtering part to enable the strong brine to backwash the filtering part. The backwashing water output end of the filtering part is connected with the input end of the desalting treatment part, so that backwashing water flows back. The utilization efficiency is improved, and the resource consumption is reduced.

Methods and systems directed to the separation of tritium from an aqueous stream are described. The separation method is a multistage method that includes a purification stage during which tritium of a tritium-contaminated aqueous stream is adsorbed onto a cooled and wet separation phase, a regeneration stage during which the adsorbed tritium is exchanged with hydrogen in a gaseous stream to regenerate the separation phase and provide a gaseous stream with a high tritium concentration, and a third stage during which the tritium of the gaseous stream is separated from the gaseous stream as a gaseous tritium product.

An apparatus and method for integrated tritium extraction and recovery in a fusion power system includes combining-in a tritium extraction unit-a fluid tritium breeding composition with a second fluid to generate a combined fluid undergoing two phase flow, and extracting tritium from the breeding composition in the two-phase flow by simultaneous processes of permeation across a solid membrane and tritium transfer onto the second fluid (i.e., gas-liquid or liquid-liquid contacting).

This invention relates to a method and system for water isotope pervaporation separation based on a two-dimensional material membrane, belonging to the field of membrane separation technology. The method combines pervaporation with a two-dimensional material membrane, which is either a two-dimensional nanoporous membrane or a mixed matrix membrane. It utilizes the sub-nanometer interlayer channels of the nanoporous membrane or the kinetic quantum sieving effect of the polymer chain micropores in the mixed matrix membrane, as well as the chemical affinity quantum sieving effect of the binding sites on the surface of the two-dimensional material, coupled with pervaporation to achieve water isotope separation. Under the action of quantum sieving, lighter isotopes transport faster than heavier isotopes; particles are in a vibrating state within the pores; lighter isotopes have higher zero-point energies and more intense vibrations, making them easier to break free from adsorption sites; heavier isotopes have lower zero-point energies and are more easily adsorbed, thus achieving separation. This scheme, by leveraging intramembrane quantum sieving, synergistically combining the phase transition of pervaporation with the transmembrane chemical potential gradient, can achieve low-energy and high-efficiency separation of water isotopes, promoting applications in membrane separation and the field of two-dimensional materials.

To provide a hydrogen isotope separation system capable of achieving simplification of a configuration and suppression of an increase in an arrangement space.SOLUTION: A hydrogen isotope separation system 10 includes a fuel battery cell 15 having an ion exchange membrane 15a, an anode 15b, and a cathode 15c. The hydrogen isotope separation system 10 comprises: an anode supply path 10a for supplying heavy water containing light water to the anode 15b; a heavy water tank 11; an anode-side humidifier 14A; a cathode supply path 10b for supplying an inert gas containing the light water to the cathode 15c; a nitrogen tank 12; and a cathode-side humidifier 14C. The hydrogen isotope separation system 10 includes: an anode-side condensation separator 16 provided on the discharge side of the anode 15b of the fuel battery cell 15; a cathode-side condensation separator 17 provided on the discharge side of the cathode 15c of the fuel battery cell 15; and a refrigerant circuit 30. The refrigerant circuit 30 cools the cathode-side condensation separator 17 by the refrigerant after being used for cooling the anode-side condensation separator 16.SELECTED DRAWING: Figure 1

The invention relates to the technical field of tritium recovery and discloses a tritium separation device and a tritium recovery system.The tritium separation device comprises a tank body, a porous substrate and a graphene film doped with niobium and boron, the tank body is provided with a tritium separation cavity, and the tank body is provided with an air inlet, a first air outlet and a second air outlet which communicate with the tritium separation cavity; the porous substrate is arranged in the tritium separation cavity and divides the tritium separation cavity into a first cavity and a second cavity, the first cavity is communicated with the air inlet and the first air outlet, the second cavity is communicated with the second air outlet, and the graphene film is arranged on the face, close to the first cavity, of the porous substrate. According to the tritium separation device, the technical problem of how to improve the recovery purity of tritium can be solved, the tritium in the tritium-containing mixed gas can be separated by the graphene membrane, and the tritium gas can be effectively separated from protium gas and deuterium gas, so that the protium gas and the deuterium gas can be prevented from being contained in the tritium gas, and the purity of the tritium gas can be improved.

The invention relates to the technical field of fusion reactor fuel production and circulation, and particularly discloses a solid tritium breeding agent efficient tritium controlled release and recovery integrated system and a use method. Comprising a carrier gas system, a heating furnace, a recovery tank a, a catalytic oxidation device, a recovery tank b and a tail gas purification and emission device which are sequentially connected, and a safety interlocking module which is respectively connected with the carrier gas system, the heating furnace, the recovery tank a, the catalytic oxidation device, the recovery tank b and the tail gas purification and emission device. According to the invention, an ideal environment is provided for completing comprehensive and accurate measurement and verification in an off-line state, and the reliability of experimental data can be directly improved.

The application discloses a kind of iron sulfide-phosphide catalyst for electrolysis water separation hydrogen isotope and preparation method thereof.The catalyst is with conductive carbon paper as substrate, by in-situ growth of iron oxyhydroxide precursor by hydrothermal method, then simultaneously introduce sulfur source and phosphorus source by chemical vapor deposition technology, to obtain the nano-structured catalyst with Fe-S-P active component.The catalyst not only shows excellent hydrogen evolution reaction activity in alkaline electrolyte, but also can realize efficient separation of hydrogen and deuterium by using kinetic isotope effect, with high hydrogen / deuterium separation factor.The application also provides the application of the catalyst in electrolysis water hydrogen production and hydrogen isotope separation, as well as the electrolysis separation method based on the catalyst.The application has simple process and low cost, provides efficient integrated material and process scheme for solving the green and low-cost extraction of deuterium resources.

An apparatus (100) and method for integrated tritium extraction and recovery in a fusion power system are described. The technique involves combining a flowable tritium breeding composition (120) with a second fluid (122)—in a tritium extraction unit (102)—to produce a combined fluid (110) flowing in two-phase flow, and extracting tritium from the breeding composition in the two-phase flow by a simultaneous process of permeation through a solid membrane (118) and tritium transfer to the second fluid (i.e., gas-liquid or liquid-liquid contact). A corresponding fusion power system is also described.

The invention discloses a high-purity deuterium gas preparation device which comprises an electrolytic bath, a deuterium gas preheating buffer tank, a deuterium gas membrane type purifier and a deuterium gas heavy water heat exchanger, the electrolytic bath is connected with the deuterium preheating buffer tank through a first pipeline; the deuterium gas preheating buffer tank is connected with a gas inlet of the deuterium gas membrane type purifier through a second pipeline, crude deuterium gas heated by the deuterium gas preheating buffer tank is conveyed to the deuterium gas membrane type purifier through the second pipeline to be purified, and a first gas outlet of the deuterium gas membrane type purifier is connected with the deuterium gas heavy water heat exchanger through a third pipeline. The deuterium gas preparation by electrolysis and purification and separation are integrated in the same system, so that the equipment is high in compactness degree, small in occupied area, few in equipment and low in investment cost; in the deuterium gas membrane type purifier, the crude deuterium gas is separated and purified by a palladium membrane with a sandwich structure, and the purification temperature can be obviously reduced by only 150-300 DEG C in combination with the material composition, thickness and the like of the palladium membrane, so that the energy is saved, and the consumption is reduced.

The invention belongs to the technical field of chemical preparation, and particularly relates to a device and method for preparing deuterium and a preparation method of an iron-nickel bimetallic catalyst. According to the method for preparing the deuterium, the KOD / MeOD solution is used as the anode electrolyte, the proton exchange membrane, the electrolytic tank and the catalyst are used for directly electrolyzing the deuterated methanol to produce the deuterated formic acid, the deuterated methanol can be directly oxidized into the deuterated formic acid in the mixed solution of the anode electrolytic tank, deuterium gas is separated out on the cathode side, and the deuterated methanol can be directly oxidized into the deuterated formic acid. Selective oxidation of low-carbon molecules is realized to decouple and electrolyze heavy water to prepare deuterium; the deuterium preparation device is designed according to the deuterium preparation method and comprises a power supply, an anode, a cathode, an anode electrolytic tank, a cathode electrolytic tank, a proton exchange membrane and a constant-temperature shell, an iron-nickel bimetallic catalyst NiFe2O4 / NF is selected as the catalyst, the embodiment of the invention provides a preparation method of the catalyst, and the iron-nickel bimetallic catalyst NiFe2O4 / NF has the advantages of high performance and stability.

A method of generating hydrogen involving contacting an aqueous solution with an activated aluminum composite including aluminum, AlN, γ-Al2O3, and optionally a carbonaceous material. The activated aluminum composite can safely be stored and can be used for safe on demand hydrogen generation in water.

The present application provides a device for preparing standard gases of different deuterium abundance, comprising: a feeding unit for providing natural water, the natural water comprising deuterium water and hydrogen water; the electrolytic hydrogen production unit is used for electrolyzing natural water to generate standard gas, and the standard gas comprises hydrogen and deuterium gas; the water-hydrogen liquid-phase catalytic exchange unit comprises a first feed port, a catalytic exchange column and a second feed port which are sequentially communicated in the first direction, the first feed port is used for transmitting standard gas to the catalytic exchange column, and the second feed port is used for transmitting natural water to the catalytic exchange column; the deuterium gas and the hydrogen water in the catalytic exchange column are subjected to a hydrogen isotope exchange reaction, and standard gas with deuterium abundance decreasing in sequence in the first direction is obtained; the catalytic exchange column comprises at least two discharge ports which are sequentially formed in the first direction, and the deuterium abundance of standard gas output by any two discharge ports is different. According to the device disclosed by the invention, standard gases with different deuterium abundance can be obtained at the same time through a method of combining liquid-phase catalytic exchange with electrolysis.

The application belongs to the field of deuterium gas preparation and purification, and particularly relates to a method and device for improving electrolytic preparation of high-purity deuterium gas by pretreating heavy water with a degassing membrane. The device comprises an electrolytic cell, an oxygen separator, a deuterium separator, a drying tower, a degassing membrane assembly, a circulating pump and a vacuum pump. The cathode of the electrolytic cell is connected to the deuterium separator, the anode of the electrolytic cell is connected to the oxygen separator, the bottom of the oxygen separator is connected to the degassing membrane assembly through the circulating pump, the side of the degassing membrane assembly for separating gaseous substances is connected to the vacuum pump, and the degassing membrane assembly is connected to the electrolytic cell. The method comprises pretreatment, electrolysis and gas purification and separation. The application completes the first purification of heavy water through the pretreatment of the degassing membrane assembly, removes impurities such as oxygen, nitrogen and methane for the first time, and then makes the deuterium gas produced by electrolysis contain only a small amount of water, so that high-purity deuterium gas with a purity of greater than or equal to 99.9999% can be obtained through secondary purification (the drying tower). Meanwhile, the method has strong operability, low safety risk and is easy to scale up.

A material for hydrogen isotope storage comprising a metallic matrix including a metal hydride and a solid lubricant dispersed within the matrix.

The application relates to a membrane electrode and application thereof in enriching deuterium water, and belongs to the field of clean energy development and utilization. The membrane electrode comprises a proton exchange membrane, an anode catalyst and a cathode catalyst; the anode catalyst is an iridium / iridium oxide catalyst with a three-dimensional porous network structure, and the cathode catalyst is a platinum-ruthenium alloy catalyst. A preparation method is as follows: the anode catalyst is coated on one side of an N117 proton exchange membrane, the cathode catalyst is coated on the other side, and then heat pressing is carried out to prepare the membrane electrode. The application comprises assembling the membrane electrode into an electrolytic cell, electrolyzing water by using the electrolytic cell, and realizing enrichment of deuterium. The membrane electrode and the electrolytic cell are reasonable in design, simple and controllable in preparation process, high in efficiency and long in service life when the obtained product is used for enriching deuterium, and are convenient for industrial application.

The embodiment of the invention provides a double-temperature water-hydrogen exchange system which comprises a first water-hydrogen exchange unit, a second water-hydrogen exchange unit, a cooling unit and a heating unit, the cooling unit communicates with a deuterium-rich hydrogen inlet and a deuterium-rich water outlet, and the temperature in the cooling unit is lower than that in the second water-hydrogen exchange unit. The heating unit is respectively communicated with the deuterium-rich hydrogen outlet and the deuterium-rich water inlet, and the heating unit is communicated with the cooling unit, so that a deuterium-rich hydrogen flowing path which sequentially passes through the heating unit and the cooling unit is formed between the deuterium-rich hydrogen outlet and the deuterium-rich hydrogen inlet; a deuterium-rich water flowing path sequentially passing through the cooling unit and the heating unit is formed between the deuterium-rich water outlet and the deuterium-rich water inlet, and the temperature in the heating unit is higher than the temperature in the first water-hydrogen exchange unit and the temperature in the cooling unit. According to the double-temperature water-hydrogen exchange system, the deviation between the actual reaction temperature and the preset temperature in the water-hydrogen exchange unit can be reduced.