Multi-stage separation hydrogen production reaction system based on slurry hydrogen storage and production material and use method

Abstract

The invention discloses a multistage separation hydrogen production reaction system based on a slurry hydrogen storage and production material and a use method. The multistage separation hydrogen production reaction system comprises a reactor, a purification module and a feeding module, wherein the purification module and the feeding module are connected with the reactor; the reactor is provided with a heating part and is used for providing reaction conditions; the purification module comprises a first membrane separator sequentially connected with the reactor and a plurality of hydrogen storage alloy separators connected in series; the feeding module is used for conveying a slurry hydrogen storage and production material and water to the reactor, and is also used for realizing heating and cooling of the hydrogen storage alloy separator. The membrane separation technology and hydrogen storage alloy selective hydrogen absorption are combined, the purification efficiency and the product purity of hydrogen are remarkably improved through the multi-stage synergistic purification process, and the hydrogen purity is close to 100%. The working temperature interval of the system constructed by the invention in the hydrogen purification stage is 20-90 DEG C, and the high-temperature working condition of 300 DEG C or above is obviously reduced compared with that of a traditional membrane separation process.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen production, and in particular to a multi-stage separation hydrogen production reaction system based on slurry hydrogen storage and production materials and a use method thereof. Background Art

[0002] Hydrogen energy not only has high energy density, but also only produces water after combustion. As a clean and efficient secondary energy carrier, it has broad application prospects in the field of new energy. In recent years, among the many hydrogen production methods, slurry hydrogen storage and production materials composed of nano-microcrystalline metal materials and organic liquids have attracted widespread attention due to their mild reaction conditions, controllable hydrogen production rate, and wide sources of raw materials.

[0003] However, the high-temperature exhaust gas generated during the reaction of slurry hydrogen storage materials carries a large amount of heat and is directly discharged, causing energy waste and reducing the overall energy efficiency of the system. Secondly, the gas produced by hydrolysis and hydrogen release reactions of organic liquids contains various impurities in addition to hydrogen, such as water vapor, CO, CO2, CH4, etc. These impurities will not only affect the performance and life of downstream hydrogen energy application equipment (such as fuel cells), but may also cause corrosion of system pipelines and increase maintenance costs.

[0004] At present, conventional hydrogen purification technologies mainly include pressure swing adsorption (PSA), cryogenic separation and membrane separation. Activated carbon adsorption has a good removal effect on heavy hydrocarbons and part of CO, and the equipment is simple and the operating cost is low, which is suitable as a primary gas purification unit; PSA technology has the advantages of large processing capacity, stable operation, and good adsorption selectivity. It can effectively remove inorganic impurities such as CO2 and is an important purification method for industrial hydrogen production; palladium membrane separation has the characteristics of high selectivity and good product purity, which is particularly suitable for deep purification of hydrogen. However, in the face of multi-component mixed gases produced by hydrogen production reactions, the use of a single purification technology often requires higher operating pressures and higher reaction temperatures (usually higher than 200°C), and the purification effect is difficult to meet the quality requirements of high-purity hydrogen. The development of an efficient multi-stage purification hydrogen production system has important practical significance. Summary of the invention

[0005] The present invention combines membrane separation technology with selective hydrogen absorption of hydrogen storage alloys, and can continuously prepare and deeply purify hydrogen on the basis of fully utilizing the heat generated in the reaction process of slurry hydrogen storage and production materials and realizing water circulation in the reaction process.

[0006] In order to achieve the above-mentioned object, the present invention provides a multi-stage separation hydrogen production reaction system based on slurry hydrogen storage and production materials, comprising a reactor, and a purification module and a feed module connected to the reactor; The reactor is provided with a heating component for providing reaction conditions; The purification module comprises a first membrane separator and a plurality of hydrogen storage alloy separators connected in series with the reactor in sequence; The feed module is used to transport slurry hydrogen storage and production materials and water to the reactor, and is also used to achieve temperature increase and temperature decrease of the hydrogen storage alloy separator.

[0007] Further, the feed module includes a first water storage tank, a second water storage tank and a slurry tank; The first water storage tank and the second water storage tank are respectively connected to the reactor through the hydrogen storage alloy separator; The first water storage tank is used to transport water to the reactor and input cooling water to the hydrogen storage alloy separator, and the second water storage tank is used to input hot water to the hydrogen storage alloy separator; The slurry tank is connected to the reactor.

[0008] Furthermore, it also includes a heat exchanger connected to the reactor, the heat exchanger is used to recover the heat of the waste after the slurry hydrogen storage and production material and water react. The hydrogen storage alloy separator is provided with a hydrogen storage alloy inside, and the hydrogen storage alloy includes LaCe x Ni 5-x 、LaNi5、Z r0.9 Ti 0.1 V2, LaNi 4.7 Al 0.3 At least one of; The first water storage tank is connected to the hydrogen storage alloy separator and the reactor in sequence through a cooling water pipe; The second water storage tank is connected to the hydrogen storage alloy separator and the heat exchanger in sequence through a hot water pipe, and the hot water pipe is also connected to the reactor; Partial pipe sections of the cooling water pipe and the hot water pipe are wound around the hydrogen storage alloy inside the hydrogen storage alloy separator.

[0009] Furthermore, the purification module further comprises a condenser, and the first membrane separator is connected to the reactor via the condenser.

[0010] Furthermore, a buffer tank is provided between the condenser and the reactor.

[0011] Furthermore, the hot water pipe is also connected to the condenser.

[0012] Furthermore, the purification module also includes a carrier gas tank and a second membrane separator; The gas carrier tank and the second membrane separator are connected to the hydrogen storage alloy separator at the head end and the tail end respectively.

[0013] Further, the heating component includes an electric heater and a gas heater; The hydrogen storage alloy separator at the end is also connected to the fuel gas heater to provide the fuel gas heater with other combustible gases produced by the reaction of slurry hydrogen storage and production materials and water except hydrogen.

[0014] The present invention also provides a method for using the above-mentioned multi-stage separation hydrogen production reaction system, comprising: Turn on the heating component of the reactor, and use the feed module to deliver slurry hydrogen storage and production materials and water to the reactor; The slurry hydrogen storage and production material reacts with water inside the reactor, and the hydrogen is separated by the purification module.

[0015] Furthermore, the working temperature of the purification module is 20-90°C.

[0016] In the present invention, the slurry hydrogen production material does not need to be strictly limited, and can be composed of nano-microcrystalline metal, organic liquid and catalyst. Wherein, in terms of mass percentage, the contents of nano-microcrystalline metal, organic liquid and catalyst are 1-40wt.%, 50-95wt.%, and 1-25wt.% respectively; the nano-microcrystalline metal can be at least one of Na, K, Mg and Al with an average particle size of 100-1000nm; the organic liquid is at least one of the full hydrogenation products of aromatic compounds, the full hydrogenation products of heterocyclic compounds and the full hydrogenation products of liquid organic polyols, and the full hydrogenation products of the aromatic compounds are at least one of cyclohexane, methylcyclohexane, dimethylcyclohexane, decane and decahydronaphthalene; the full hydrogenation products of the heterocyclic compounds are at least one of full hydrogenated N-ethylcarbazole, full hydrogenated N-propylcarbazole, full hydrogenated N-methylindole, full hydrogenated N-ethylindole, full hydrogenated quinoline and the like; the full hydrogenation products of the liquid organic polyols are at least one of methanol, ethanol and isopropanol and the like. The catalyst may be at least one of a Pd-based catalyst and a Pt-based catalyst.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention combines membrane separation technology with selective hydrogen absorption of hydrogen storage alloys. The first membrane separator realizes preliminary enrichment of hydrogen, and several hydrogen storage alloy separators connected in series ensure deep purification effect. This multi-stage coordinated purification process significantly improves the purification efficiency and product purity of hydrogen, and the purity of hydrogen is close to 100%.

[0018] The operating temperature range of the system constructed by the present invention in the hydrogen purification stage is 20-90°C, which is significantly lower than the high temperature working conditions of more than 300°C in the traditional membrane separation process. The mild operating conditions not only greatly reduce energy consumption and improve the overall energy efficiency of the system, but also reduce the performance requirements of equipment materials, effectively saving operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 The schematic diagram of the structure of the multi-stage separation hydrogen production reaction system based on slurry hydrogen storage and production materials is shown; Figure 2 A schematic diagram showing the structure of a partial pipe section of a cooling water pipe and a hot water pipe and a hydrogen storage alloy; Description of reference numerals: 1. Reactor; 2. Buffer tank; 3. Condenser; 4. First membrane separator; 5. First hydrogen storage alloy separator; 6. Second hydrogen storage alloy separator; 7. Second membrane separator; 8. Gas carrier tank; 9. First water storage tank; 10. Second water storage tank; 11. Slurry tank; 12. Heat exchanger. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The following will be combined with the specific embodiments of the present invention and the drawings of the specification to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example like Figure 1As shown, a multi-stage separation hydrogen production reaction system based on slurry hydrogen storage and production materials includes a reactor 1, and a feed module, a purification module and a heat exchanger 12 connected to the reactor 1. The reactor 1 is provided with a heating component and can accurately control the temperature. The heating component includes an electric heater and a gas heater. The purification module includes a buffer tank 2, a condenser 3, a first membrane separator 4, a first hydrogen storage alloy separator 5, a second hydrogen storage alloy separator 6 and a second membrane separator 7, which are sequentially connected to the reactor 1 through a gas supply pipe, wherein the condenser 3 is also connected to the reactor 1; the first hydrogen storage alloy separator 5 and the second hydrogen storage alloy separator 6 are provided with hydrogen storage alloys; the first hydrogen storage alloy separator 5 is also connected to the gas carrier tank 8; the gas carrier tank 8 is also connected to the second membrane separator 7. The feeding module is used to transport slurry hydrogen storage materials and water to the reactor 1, and is also used to achieve heating and cooling of the first hydrogen storage alloy separator 5 and the second hydrogen storage alloy separator 6. The feeding module includes a first water storage tank 9, a second water storage tank 10 and a slurry tank 11. The first water storage tank 9 is connected to the first hydrogen storage alloy separator 5 and the reactor 1 in sequence through a cooling water pipe, and the second water storage tank 10 is connected to the second hydrogen storage alloy separator 6 and the heat exchanger 12 in sequence through a hot water pipe, and the hot water pipe is also connected to the reactor 1; the slurry tank 11 is connected to the reactor 1.

[0025] like Figure 2 As shown, some sections of the cooling water pipe and the hot water pipe are wound around the hydrogen storage alloy inside the hydrogen storage alloy separator, and the hydrogen storage alloy is cooled and heated by inputting cooling water and hot water. The hydrogen storage alloy separator is also integrated with precise temperature detection components and adsorption amount detection components to ensure the accuracy of the adsorption and desorption temperature of hydrogen by the hydrogen storage alloy.

[0026] In this embodiment, the second membrane separator 7 is also connected to the gas heater to provide the gas heater with other combustible gases produced by the reaction of slurry hydrogen storage and production materials and water in addition to hydrogen. The system is equipped with a complete temperature and pressure control mechanism. Solenoid valves are set on the air supply pipe, cooling water pipe and hot water pipe for flow regulation. The valve opening can be continuously adjusted within the range of 0-100%, and a pressure sensor is equipped to monitor the pipeline pressure in real time. The system working pressure is controlled at 2MPa. The first membrane separator 4 uses a carbon molecular sieve membrane to separate hydrogen, and the second membrane separator uses a hollow fiber membrane to separate nitrogen and hydrogen. The hydrogen storage alloy of the first hydrogen storage alloy separator 5 is LaCe x Ni 5-x Alloy, the hydrogen storage alloy of the second hydrogen storage alloy separator 6 is LaNi5.

[0027] The first water tank 9 controls the input of cooling water by using a temperature sensor to monitor the water temperature in real time and controlling the flow rate through a solenoid valve to maintain the cooling water temperature at about 20°C, ensuring that the first hydrogen storage alloy separator 5 and the second hydrogen storage alloy separator 6 maintain a constant temperature during the hydrogen absorption process. When the system temperature fluctuates, the control system will automatically adjust the cooling water flow rate to maintain a stable temperature, and a flow meter will be equipped for real-time monitoring.

[0028] The second water storage tank 10 is regulated by the PID control algorithm, and the temperature of the hot water is precisely controlled within the range of 90±2°C by the temperature sensor and the solenoid valve. The system is provided with a temperature over-limit alarm function, which triggers an alarm and activates a protection mechanism when the temperature exceeds 92°C. The second water storage tank 10 is used to promote the release of hydrogen from the hydrogen storage alloy, so the accuracy of temperature control directly affects the efficiency of hydrogen release.

[0029] The first hydrogen storage alloy separator 5 is LaCe x Ni 5-x Alloy, the internal hydrogen storage alloy of the second hydrogen storage alloy separator 6 adopts LaNi5. Hydrogen absorption is carried out under the conditions of 20 bar pressure and room temperature (20°C), at this time, cooling water is introduced to keep the temperature stable; when hydrogen needs to be released, 90°C hot water is introduced to quickly increase the alloy temperature and promote hydrogen release. The first hydrogen storage alloy separator 5 and the second hydrogen storage alloy separator 6 are equipped with independent temperature sensors, pressure sensors and control loops to ensure precise control of operating parameters. The pressure sensor monitors the pressure changes during hydrogen absorption and release in real time to ensure that the system always operates within a safe pressure range.

[0030] In this embodiment, the slurry hydrogen production material is a mixed slurry of 50wt.% N-propylcarbazole, 40wt.% 100nmAl powder and 10wt.% Pd-based catalyst in mass percentage. The preparation method of the slurry hydrogen production material can refer to the patent publication CN118495469A, which does not involve the improvement points of the present invention and the present invention does not make any improvement.

[0031] The working method and principle of the multi-stage separation hydrogen production reaction system of this embodiment are described in detail below: System configuration in the initial stage: Before the system is operated, necessary process condition presets and parameter initializations are required. First, ensure that there is sufficient raw material in the storage tank, the liquid level and temperature of the first water storage tank 9 and the second water storage tank 10 are within the set range, and the pressure of the carrier gas tank 8 meets the working requirements. At the same time, check the initial state of the hydrogen storage alloy inside the first hydrogen storage alloy separator 5 and the second hydrogen storage alloy separator 6 to ensure that it has sufficient hydrogen absorption capacity. The control system presets process parameters, including the control range of key indicators such as reaction temperature, pressure, and flow.

[0032] Operation process of hydrogen absorption mode: the raw materials are continuously transported from the slurry hydrogen storage material to the heating area of ​​reactor 1 according to the preset flow rate. Reactor 1 adopts a composite heating method of electric heating and reflux gas combustion, and maintains the reaction area in the optimal temperature range of 100-200°C through a precise temperature control system. At the same time, the cooling water from the first water storage tank 9 enters the top of reactor 1 to achieve dynamic regulation of the reaction temperature. During the reaction process, the hydrolysis of nano-metal microcrystals and the dehydrogenation reaction of organic liquids proceed simultaneously, and the resulting gas mixture first enters the buffer tank 2. The buffer tank 2 effectively eliminates the fluctuations in gas flow and pressure, and provides stable gas source conditions for the subsequent separation process. The gas then enters the condenser 3, where gas-liquid separation occurs. The separated water vapor is condensed and refluxed to the reactor 1, which improves the utilization efficiency of water resources while ensuring the reaction temperature regulation effect. The cooled gas enters the first membrane separator 4 for preliminary separation. Under the action of the carbon molecular sieve membrane, hydrogen preferentially permeates and is enriched. The enriched hydrogen enters the first hydrogen storage alloy separator 5, and undergoes a reversible absorption reaction with the hydrogen storage alloy under normal temperature conditions. The gas that is not completely absorbed by the first hydrogen storage alloy separator 5 enters the second hydrogen storage alloy separator 6 for deep purification to ensure the maximum capture of hydrogen. The series configuration of the two-stage metal hydride hydrogen storage significantly improves the overall separation efficiency of the system. The unabsorbed combustible gas is returned to the gas heater to participate in the heating process.

[0033] Hydrogen release mode operation process: When it is detected that the hydrogen storage alloy in the first hydrogen storage alloy separator 5 and the second hydrogen storage alloy separator 6 reaches the preset hydrogen saturation absorption amount, hot water is transported from the second water storage tank 10 to the first hydrogen storage alloy separator 5 and the second hydrogen storage alloy separator 6. At the same time, the carrier gas tank 8 is opened and transported to the first hydrogen storage alloy separator 5 as a carrier gas for the desorption process. During the heating process, the hydrogen stored in the hydrogen storage alloy is gradually desorbed. The desorption rate is precisely controlled by the temperature change curve to ensure that the system pressure is always within a safe range. The carrier gas carries the desorbed hydrogen and enters the second membrane separator 7 for final purification. The purified high-purity hydrogen is output as a product, and the carrier gas is recovered to the carrier gas tank 8 for recycling. At the same time, the high-temperature water also enters the heat exchanger 12 to exchange heat with the waste material, and the generated water vapor is injected from the bottom of the reactor 1 to participate in the subsequent reaction process.

[0034] The present invention combines membrane separation technology with the selective absorption of hydrogen by hydrogen storage alloys to achieve multi-stage collaborative purification. First, the raw gas is concentrated by a membrane separator at room temperature, and the hydrogen concentration can be increased from about 45% in the raw gas to about 70%. The membrane separation process uses a carbon molecular sieve membrane, which has a significantly lower operating temperature than the traditional palladium membrane of 300-600°C, and has good mechanical strength and chemical stability. Secondly, the pre-enriched hydrogen enters the series-connected hydrogen storage alloy separator for deep purification. This multi-stage collaborative purification process significantly improves the purification efficiency and product purity of hydrogen, and can obtain 99.999% high-purity hydrogen with a purity close to 100%. . The hydrogen storage alloy selectively absorbs hydrogen at 20°C and 20 bar pressure conditions, and cooling water is introduced to maintain a constant temperature; when the hydrogen storage alloy is saturated with adsorption, 90°C hot water is introduced to prompt the alloy to release high-purity hydrogen. The operating temperature range of the system constructed by the present invention in the hydrogen purification stage is 20-90°C, which is significantly lower than the high-temperature working conditions of more than 200°C in the traditional membrane separation process. Mild operating conditions not only significantly reduce energy consumption and improve the overall energy efficiency of the system, but also lower the performance requirements of equipment materials, effectively saving operating costs.

[0035] Comparative Example 1 The same slurry hydrogen storage and production materials (50wt.% N-propylcarbazole, 40wt.% 100nm Al powder and 10wt.% Pd-based catalyst) and reaction conditions (reaction temperature 100-200°C) as the present invention are used, and only a carbon molecular sieve membrane is used for hydrogen purification. Although the carbon membrane can be separated at room temperature (20°C) and the operating conditions are mild, due to the limitations of the single separation mechanism, the purity of the separated hydrogen is only 70%, and the separation efficiency is low, and the single-pass hydrogen recovery rate is about 65%.

[0036] Comparative Example 2 Under the same reaction system and process parameters as the present invention, a palladium-based alloy membrane (Pd-Ag) is used for hydrogen purification. To ensure that the palladium membrane has sufficient hydrogen permeability, the operating temperature needs to be increased to 340°C and the working pressure is maintained at 20 bar. Although the hydrogen purity can reach 92%, high-temperature operation and precious metal membranes significantly increase the energy consumption and cost of the system, and at the same time put forward higher requirements on the temperature resistance of equipment materials.

[0037] Comparative Example 3 The same slurry hydrogen production reaction conditions are maintained, and only a single-stage LaNi5 hydrogen storage alloy is used for hydrogen purification. Hydrogen adsorption is performed at 20°C and 20 bar pressure, and desorption is performed at 90°C. Although the operating temperature range is similar to that of the present invention (20-90°C), and the hydrogen purity can reach 90%, the adsorption capacity of the single-stage hydrogen storage alloy is limited, and impurities are easily accumulated, resulting in a decrease in cycle performance, requiring regular regeneration, which increases maintenance costs and operational complexity.

[0038] In contrast, the present invention adopts a multi-stage collaborative purification process of "carbon membrane separation + two-stage hydrogen storage alloy", which can obtain 99.999% high-purity hydrogen under mild conditions (20-90°C), which has significant process advantages and economic benefits.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-stage separation hydrogen production reaction system based on slurry hydrogen storage and production materials, characterized in that: It includes a reactor, and a purification module and a feed module connected to the reactor; The reactor is provided with a heating component for providing reaction conditions; The purification module comprises a first membrane separator and a plurality of hydrogen storage alloy separators connected in series with the reactor in sequence; The feed module is used to transport slurry hydrogen storage and production materials and water to the reactor, and is also used to achieve temperature increase and temperature decrease of the hydrogen storage alloy separator.

2. The multi-stage separation hydrogen production reaction system according to claim 1, characterized in that: The feed module includes a first water storage tank, a second water storage tank and a slurry tank; The first water storage tank and the second water storage tank are respectively connected to the reactor through the hydrogen storage alloy separator; The first water storage tank is used to transport water to the reactor and input cooling water to the hydrogen storage alloy separator, and the second water storage tank is used to input hot water to the hydrogen storage alloy separator; The slurry tank is connected to the reactor.

3. The multi-stage separation hydrogen production reaction system according to claim 2, characterized in that: It also includes a heat exchanger connected to the reactor, and the heat exchanger is used to recover the heat of waste after the reaction of the slurry hydrogen storage and production material and water; The hydrogen storage alloy separator is provided with a hydrogen storage alloy inside, and the hydrogen storage alloy includes LaCe x Ni 5-x 、LaNi5、Zr 0.9 Ti 0.1 V2, LaNi 4.7 Al 0.3 At least one of; The first water storage tank is connected to the hydrogen storage alloy separator and the reactor in sequence through a cooling water pipe; The second water storage tank is connected to the hydrogen storage alloy separator and the heat exchanger in sequence through a hot water pipe, and the hot water pipe is also connected to the reactor; Partial pipe sections of the cooling water pipe and the hot water pipe are wound around the hydrogen storage alloy inside the hydrogen storage alloy separator.

4. The multi-stage separation hydrogen production reaction system according to claim 3, characterized in that: The purification module further includes a condenser, and the first membrane separator is connected to the reactor via the condenser.

5. The multi-stage separation hydrogen production reaction system according to claim 4, characterized in that: A buffer tank is also provided between the condenser and the reactor.

6. The multi-stage separation hydrogen production reaction system according to claim 4, characterized in that: The hot water pipe is also connected to the condenser.

7. The multi-stage separation hydrogen production reaction system according to claim 1, characterized in that: The purification module also includes a carrier gas tank and a second membrane separator; The gas carrier tank and the second membrane separator are connected to the hydrogen storage alloy separator at the head end and the tail end respectively.

8. The multi-stage separation hydrogen production reaction system according to any one of claims 1 to 7, characterized in that: The heating component includes an electric heater and a gas heater; The hydrogen storage alloy separator at the end is also connected to the fuel gas heater to provide the fuel gas heater with other combustible gases produced by the reaction of slurry hydrogen storage and production materials and water except hydrogen.

9. A method for using the multi-stage separation hydrogen production reaction system according to any one of claims 1 to 8, characterized in that: include, Turn on the heating component of the reactor, and use the feed module to deliver slurry hydrogen storage and production materials and water to the reactor; The slurry hydrogen storage and production material reacts with water inside the reactor, and the hydrogen is separated by the purification module.

10. The method of use according to claim 9, characterized in that: The operating temperature of the purification module is 20-90°C.

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