A hydrogen production device and method based on aluminum-water reaction

Abstract

The application discloses a hydrogen production device and method based on aluminum-water reaction, which comprises a reaction container, a water inlet pipe, a hydrogen outlet pipe, a bearing assembly, aluminum alloy rods, a sewage pipe, a monitoring assembly and a controller. The bearing assembly is fixedly arranged in the reaction container, and the aluminum alloy rods are arranged in the bearing assembly. The water inlet pipe, the sewage pipe and the hydrogen outlet pipe are communicated with the reaction container. All the aluminum alloy rods in the reaction container are always located below the liquid level. The aluminum alloy rods react with water to generate hydrogen and reaction heat. The monitoring assembly is used for acquiring pressure data, temperature data and liquid level data in the reaction container in real time and transmitting the data to the controller. The controller can control the on-off of the water inlet pipe according to the temperature data, control the on-off of the sewage pipe according to the liquid level data, and take out the reaction heat through water inlet and reaction solution discharge, so that the temperature and the liquid level in the reaction container are dynamically stable. The controller can control the on-off of the hydrogen outlet pipe according to the pressure data, so as to control the discharge of hydrogen, and the pressure in the reaction container is dynamically stable. The application can control the reaction rate of hydrogen, realize the mass production of hydrogen and guarantee the stable supply of hydrogen, and has compact structure and high practicability.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of hydrogen production, and particularly relates to a hydrogen production device and method based on aluminum-water reaction. BACKGROUND

[0002] Hydrogen energy has the advantages of high-density energy, cleanness and high efficiency, and current implementation of hydrogen energy strategy has become one of the important directions of China. At present, there are many methods for hydrogen production on the market, and aluminum-water reaction is considered as one of the most potential methods.

[0003] However, in the process of aluminum-water reaction to generate hydrogen, aluminum powder is often used, which will first react with water rapidly, so that the reaction rate is not a constant value. At the same time, the reaction rate will be affected by factors such as temperature and pressure, resulting in significant fluctuations in hydrogen production. This makes it difficult to control the reaction rate of hydrogen, and further makes it difficult to stably supply a large amount of hydrogen flow. In addition, aluminum-water hydrogen production also needs to overcome the difficulties of reaction product discharge, hydrogen purification and the like, and puts forward higher requirements for the structural design of the hydrogen production device. SUMMARY

[0004] Therefore, the application provides a hydrogen production device and method based on aluminum-water reaction, which can control the reaction rate of hydrogen, realize the preparation of a large amount of hydrogen, and ensure the stable supply of hydrogen, and has compact structure and strong practicability.

[0005] The application is realized by the following technical solutions:

[0006] A hydrogen production device based on aluminum-water reaction comprises a reaction container, a water inlet pipe, a hydrogen outlet pipe, a bearing assembly, aluminum alloy bars, a sewage pipe, a monitoring assembly and a controller.

[0007] The bearing assembly is fixedly arranged in the reaction container, and the aluminum alloy bars are located in the bearing assembly.

[0008] The water inlet pipe, the sewage pipe and the hydrogen outlet pipe are communicated with the reaction container, the water inlet pipe is used for feeding water into the reaction container, the sewage pipe is used for discharging reaction solution, and the hydrogen outlet pipe is used for discharging hydrogen.

[0009] All the aluminum alloy bars in the reaction container are always located below the liquid level; the aluminum alloy bars react with water to generate hydrogen and reaction heat.

[0010] The monitoring assembly is in communication connection with the controller; the monitoring assembly is used for acquiring pressure data, temperature data and liquid level data in the reaction container in real time and transmitting the data to the controller.

[0011] The controller can control the on-off of the water inlet pipe according to the temperature data, control the on-off of the drain pipe according to the liquid level data, and take out the reaction heat through the water inlet and the discharge of the reaction solution, so as to dynamically stabilize the temperature and the liquid level in the reaction container.

[0012] The controller can control the on-off of the hydrogen outlet pipe according to the pressure data, so as to control the discharge of hydrogen and dynamically stabilize the pressure in the reaction container.

[0013] Further, the bearing assembly includes two or more support frames and a plurality of material frames; the two or more support frames are fixed side by side in the reaction container;

[0014] The support frame is a frame structure, and a plurality of clamps are arranged on the support frame;

[0015] The material frame is open at the top and has a plurality of through holes in the side wall and the bottom;

[0016] The material frame is arranged by sequentially passing through the clamps on the two or more support frames;

[0017] A plurality of aluminum alloy bars are placed in each material frame.

[0018] Further, the hydrogen production device further comprises a water jacket;

[0019] The reaction container is a rotary body;

[0020] The water jacket is coaxially arranged around the outer circumference of the reaction container, and an annular cavity is formed between the water jacket and the reaction container, the annular cavity is filled with a cooling medium, and the cooling medium exchanges heat with an external cooling device.

[0021] Further, the middle part of the hydrogen outlet pipe is spirally arranged around the outer circumference of the reaction container and located in the annular cavity.

[0022] Further, the monitoring assembly includes a temperature sensor, a pressure sensor, and a liquid level meter;

[0023] The pressure sensor and the temperature sensor are arranged on the reaction container, the pressure sensor is used to obtain pressure data on the liquid surface, and the temperature sensor is used to obtain temperature data below the liquid surface; the liquid level meter is in communication with the reaction container through an upper pipeline and a lower pipeline, and displays the liquid level height in the reaction container in real time and obtains liquid level data transmitted to the controller.

[0024] Further, the number of pressure sensors is two or more, and the number of temperature sensors is two or more.

[0025] Further, a water inlet valve is arranged on the water inlet pipe, a drain valve is arranged on the drain pipe, and a gas outlet valve is arranged on the hydrogen outlet pipe; the water inlet valve, the drain valve, and the gas outlet valve are respectively in communication connection with the controller;

[0026] The controller can control the opening and closing of the water inlet valve to control the on-off of the water inlet pipe, the controller can control the opening and closing of the sewage valve to control the on-off of the sewage pipe, and the controller can control the opening and closing of the gas outlet valve to control the on-off of the hydrogen outlet pipe.

[0027] A hydrogen production method based on aluminum-water reaction and a hydrogen production device based on aluminum-water reaction, the method comprises the following steps:

[0028] When the temperature data is greater than the set upper limit temperature, the controller controls the water inlet valve to open, and water enters the reaction container from the water inlet pipe; when the temperature data is lower than the temperature lower limit, the controller controls the water inlet valve to close;

[0029] When the liquid level data is greater than the set upper limit liquid level, the controller controls the sewage valve to open, and when the liquid level data is less than the set lower limit liquid level, the controller controls the sewage valve to close;

[0030] When the pressure data is greater than the pressure upper limit, the controller controls the gas outlet valve to open; when the pressure data is less than the pressure lower limit, the controller controls the gas outlet valve to close.

[0031] Advantages:

[0032] (1) The hydrogen production device based on aluminum-water reaction provided by the application firstly utilizes aluminum alloy bars to react with water to produce hydrogen, and compared with the reaction of aluminum powder and water, the reaction rate is slower, more controllable, and more durable, water can be continuously supplied, a large amount of stable hydrogen can be produced; secondly, water not only acts as a reactant, but also acts as cooling water, the water inlet and sewage can be controlled by the controller, the liquid level and temperature in the reaction container can be dynamically stabilized, the hydrogen discharge can be controlled by the controller, and the pressure in the reaction container can be dynamically stabilized, so that the reaction rate of hydrogen can be controlled; finally, the sewage pipe is arranged to carry away the reactants and discharge the reaction products.

[0033] (2) The bearing structure in the application can place a large amount of aluminum alloy bars in the reaction container at one time to ensure the production of a large amount of hydrogen; in addition, the support frame is a frame structure, the top of the material frame is open, and the side wall and the bottom are provided with through holes, on the one hand, the surface of the aluminum alloy bars can be washed by water to remove impurities, and on the other hand, the hydrogen can be conveniently discharged.

[0034] (3) The water jacket coaxially surrounds the outer circumference of the reaction container, and the cooling medium in the water jacket can cool the reaction container.

[0035] (4) The middle part of the hydrogen outlet pipe of the application is spirally arranged on the outer circumference of the reaction container and located in the annular cavity. On the one hand, the spirally arranged hydrogen outlet pipe can prolong the hydrogen outlet path, so as to facilitate the stable output of hydrogen pressure and the control of hydrogen output speed. On the other hand, the hydrogen generated from the reaction container can be cooled, so as to condense the water vapor mixed in the hydrogen and improve the purity of the hydrogen.

[0036] (5) The number of pressure sensors of the application is two or more, and the number of temperature sensors is two or more, so as to realize all-around measurement of pressure data and temperature data, and facilitate stable and reliable control of the reaction process.

[0037] (6) The hydrogen production method based on aluminum-water reaction provided by the application is characterized in that the control of each valve is independent of each other and does not interfere with each other. Through feedback of each collected signal, the intermittent opening of the water inlet valve, the blowdown valve and the gas outlet valve can maintain the dynamic stability of the reaction zone temperature, liquid level and pressure, so as to facilitate the control of the reaction rate and the control of the hydrogen production rate. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 is a schematic diagram of a hydrogen production device based on aluminum-water reaction;

[0039] Figure 2 is a schematic diagram of a support frame (two rows of clamps);

[0040] Figure 3 is an axonometric view of the support frame (four rows of clamps);

[0041] Figure 4 is an axonometric view of the material frame;

[0042] In the figure, 1 is a head, 2 is a temperature sensor, 3 is a pressure sensor, 4 is a water inlet pipe, 5 is a water jacket, 6 is a hydrogen outlet pipe, 7 is a tank body, 8 is a support frame, 81 is a cross beam, 82 is a vertical beam, 83 is a clamp, 9 is a material frame, 10 is a blowdown pipe, 11 is a liquid level meter, 12 is a water inlet valve, 13 is a blowdown valve, 14 is a gas outlet valve, and 15 is a controller. DETAILED DESCRIPTION

[0043] The application will be described in detail below in combination with the drawings and examples.

[0044] Example 1

[0045] This example provides a hydrogen production device based on aluminum-water reaction, referring to the attached Figure 1 , which comprises a reaction container, a water inlet pipe 4, a hydrogen outlet pipe 6, a bearing assembly, an aluminum alloy bar, a blowdown pipe 10, a monitoring assembly and a controller 15.

[0046] The bearing assembly is fixedly arranged in the reaction container, and the plurality of aluminum alloy bars are located in the bearing assembly.

[0047] The water inlet pipe 4, the sewage pipe 10 and the hydrogen outlet pipe 6 are respectively communicated with the reaction container, the water inlet pipe 4 is used for feeding water into the reaction container, the sewage pipe 10 is used for discharging the reaction solution, and the hydrogen outlet pipe 6 is used for discharging hydrogen;

[0048] All the aluminum alloy bars in the reaction container are always located below the liquid level; the aluminum alloy bars react with water to generate hydrogen and generate reaction heat; the reaction heat increases the temperature in the reaction container, and the generated hydrogen increases the pressure in the reaction container;

[0049] The monitoring assembly is in communication connection with the controller 15; the monitoring assembly is used for acquiring the pressure data, the temperature data and the liquid level data in the reaction container in real time and transmitting to the controller 15;

[0050] The controller 15 can control the on-off of the water inlet pipe 4 according to the temperature data, control the on-off of the sewage pipe 10 according to the liquid level data, and take out the reaction heat through the feeding of water and the discharge of the reaction solution, so as to dynamically stabilize the temperature and the liquid level in the reaction container;

[0051] The controller 15 can control the on-off of the hydrogen outlet pipe 6 according to the pressure data, so as to control the discharge of hydrogen and dynamically stabilize the pressure in the reaction container.

[0052] The hydrogen production device based on aluminum-water reaction provided by the embodiment firstly generates hydrogen by the reaction of aluminum alloy bars with water, and compared with the reaction of aluminum powder with water, the reaction rate is slower, more controllable, and more durable, water can be continuously fed to realize stable hydrogen production in a large amount; secondly, water not only acts as a reactant, but also acts as cooling water, the feeding and the sewage can be controlled by the controller to dynamically stabilize the liquid level and the temperature in the reaction container; the discharge of hydrogen can be controlled by the controller to dynamically stabilize the pressure in the reaction container and control the reaction rate of hydrogen. Finally, the sewage pipe 10 is arranged to take away the reactants and discharge the reaction products.

[0053] In one embodiment, the bearing assembly includes two or more support frames 8 and a plurality of material frames 9; the two or more support frames 8 are fixedly arranged side by side in the reaction container;

[0054] Referring to the accompanying drawings, Figure 2 and 3 The support frame 8 is a frame structure and includes a plurality of cross beams 81 and a plurality of vertical beams 82; the plurality of cross beams 81 are arranged from top to bottom; the plurality of vertical beams 82 are arranged vertically and equidistantly with the plurality of cross beams 81; the vertical beams 82 and the cross beams 81 cross to form a plurality of clamping openings 83;

[0055] Referring to the accompanying drawings, Figure 4The material frame 9 is open at the top and is a cuboid. The side wall and the bottom of the material frame 9 are provided with a plurality of through holes, so that two or more support frames 8 are arranged in the horizontal direction. The support frame 8 is vertically placed. The length direction of the material frame 9 is along the horizontal direction and sequentially passes through the clamping holes 83 on the two or more support frames 8. The aluminum alloy rod is located in the material frame 9. In the specific embodiment, two support frames 8 are used. A plurality of aluminum alloy rods can be placed in a single material frame 9. The clamping holes on the support frame 8 can be two rows, three rows, or four rows, etc.

[0056] Further, the material frame 9 is welded by a 0.5mm-thick stainless steel hole plate. The left and right adjacent and the upper and lower adjacent material frames are spaced apart by more than 4mm.

[0057] The bearing assembly structure provided by the embodiment can place a large amount of aluminum alloy rods in the reaction container at one time, so as to ensure the large amount of hydrogen production. Moreover, the support frame 8 is a frame structure. The top of the material frame 9 is open. The side wall and the bottom are provided with through holes. On the one hand, the water can be used to flush the impurities of the reaction on the surface of the aluminum alloy rod (the expansion of the reaction of the aluminum alloy rod and water will cause the impurities of the reaction to adhere to the surface of the aluminum alloy rod, which will affect the further reaction of aluminum and water). On the other hand, the hydrogen gas can be conveniently discharged upward.

[0058] In one embodiment, the reaction container is a rotary body, and the axis direction is along the aforementioned longitudinal direction. Specifically, refer to the attached Figure 1 The reaction container includes a tank body 7 and a head 1.

[0059] The tank body 7 is a cylindrical shell structure with one end open and the other end closed. The closed end of the tank body 7 is an outward convex arc surface. The head 1 is an arc surface structure, and the edge is provided with an outward flange. The head 1 is connected with the open end of the tank body 7 through the flange. The convex surface of the head 1 faces the outside of the tank body 7. The head 1 and the tank body 7 form a closed space.

[0060] In one embodiment, the monitoring assembly includes a temperature sensor 2, a pressure sensor 3, and a liquid level meter 11.

[0061] The pressure sensor 3 and the temperature sensor 2 are both arranged on the reaction container. The pressure sensor 3 is used to obtain the pressure data on the liquid surface. The temperature sensor 2 is used to obtain the temperature data below the liquid surface. The liquid level meter 11 is communicated with the reaction container through the upper pipeline and the lower pipeline, respectively, to display the liquid level height in the reaction container in real time and obtain the liquid level data transmitted to the controller 15.

[0062] Further, the number of pressure sensors 3 is two or more, which are dispersedly arranged on the closed end of the tank body 7 and the head 1. The number of temperature sensors 2 is two or more, which are dispersedly arranged on the closed end of the tank body 7 and the head 1. Thus, the omnibearing measurement of the pressure data and the temperature data is realized, which is convenient for stably and reliably controlling the reaction process.

[0063] Specifically, the temperature sensor 2 is a thermocouple and is arranged at the bottom end of the head 1; the pressure sensor 3 is arranged at the top end of the head 1; the liquid level meter 11 is arranged outside the closed end of the tank body 7, and the upper pipeline and the lower pipeline of the liquid level meter 11 respectively pass through the closed end of the tank body 7 to communicate with the tank body 7.

[0064] In an embodiment, the water inlet pipe 4 is provided with a water inlet valve 12, the blowdown pipe 10 is provided with a blowdown valve 13, and the hydrogen outlet pipe 6 is provided with a gas outlet valve 14; the water inlet valve 12, the blowdown valve 13 and the gas outlet valve 14 are respectively in communication connection with the controller 15;

[0065] The controller 15 can control the opening and closing of the water inlet valve 12 to control the on-off of the water inlet pipe 4; the controller 15 can control the opening and closing of the blowdown valve 13 to control the on-off of the blowdown pipe 10, and the controller 15 can control the opening and closing of the gas outlet valve 14 to control the on-off of the hydrogen outlet pipe 6.

[0066] In an embodiment, the aluminum alloy rod is selected from materials that can react with water to produce hydrogen at room temperature.

[0067] Working principle:

[0068] The aluminum alloy rod is selected to react with water. Since the reaction rate of the aluminum alloy rod with water is slower than that of aluminum powder with water, a large amount of aluminum alloy rod can be placed at one time to react with water, thereby realizing the stable preparation of a large amount of hydrogen.

[0069] The controller 15 is used to control the water inlet and outlet of the reaction container. On the one hand, the reaction heat can be taken away through the water inlet and outlet to maintain the dynamic stability of the temperature in the reaction container, thereby controlling the reaction rate of hydrogen; on the other hand, the reaction impurities on the surface of the aluminum alloy rod can be washed away through the water inlet and outlet, thereby ensuring the stable preparation of hydrogen.

[0070] The controller 15 is used to control the hydrogen outlet, which can control the dynamic stability of the pressure in the reaction container, thereby controlling the reaction rate of hydrogen.

[0071] Embodiment 2:

[0072] This embodiment is based on embodiment 1 and further includes a water jacket 5.

[0073] The water jacket 5 is coaxially arranged around the outer circumference of the reaction container, and an annular cavity is formed between the water jacket 5 and the reaction container. The annular cavity is filled with a cooling medium, and the cooling medium exchanges heat with an external heat exchanger or other cooling device. In a specific embodiment, the cooling medium enters from the bottom of the water jacket 5 and is discharged from the top of the water jacket 5.

[0074] The middle part of the hydrogen outlet pipe 6 is spirally arranged around the outer circumference of the reaction container and located in the annular cavity.

[0075] The cooling jacket 5 has the function of cooling the reaction container, on the one hand, the spiral arrangement of the hydrogen outlet pipe 6 can prolong the hydrogen outlet path, so as to stabilize the hydrogen pressure and control the hydrogen output speed; on the other hand, the hydrogen generated from the reaction container is cooled, so that the water vapor mixed in the hydrogen is condensed, and the purity of the hydrogen is improved.

[0076] Embodiment 3:

[0077] The embodiment based on the embodiment 1 or the embodiment 2 provides a hydrogen production method based on aluminum-water reaction, which can effectively control the temperature and pressure in the reaction container, so as to control the reaction rate of hydrogen, and the method is:

[0078] The controller 15 controls the water inlet valve 12 to open, and the water enters the reaction container from the water inlet pipe 4 until all the aluminum alloy rods are immersed, and the controller 15 controls the water inlet valve 12 to close;

[0079] The temperature sensor 2 obtains the temperature data in the reaction container in real time and transmits the temperature data to the controller 15, when the temperature data is greater than the set upper limit temperature (if there are multiple temperature data, that is, when any one temperature data is greater than the set upper limit temperature), the controller 15 controls the water inlet valve 12 to open, and the water enters the reaction container from the water inlet pipe 4; when the temperature data is lower than the temperature lower limit, the controller 15 controls the water inlet valve 12 to close;

[0080] The liquid level meter 11 obtains the liquid level data in the reaction container in real time and transmits the liquid level data to the controller 15, when the liquid level data is greater than the set upper limit liquid level, the controller 15 controls the blowdown valve 13 to open, and when the liquid level data is less than the set lower limit liquid level, the controller 15 controls the blowdown valve 13 to close;

[0081] The pressure sensor 3 obtains the pressure data in the reaction container in real time and transmits the pressure data to the controller 15, when the pressure data is greater than the pressure upper limit, the controller 15 controls the gas outlet valve 14 to open; when the pressure data is less than the pressure lower limit, the controller 15 controls the gas outlet valve 14 to close.

[0082] The hydrogen production method based on aluminum-water reaction provided in the embodiment is characterized in that the control of each valve is independent and does not interfere with each other, through the feedback of each collected signal, the intermittent opening of the water inlet valve, the blowdown valve and the gas outlet valve can maintain the relative stability of the reaction zone temperature, the liquid level and the pressure, which is convenient for controlling the reaction rate and further controlling the hydrogen production rate. After the hydrogen gas is discharged from the hydrogen production device, it is subjected to the processes of cooling, water washing, filtering, drying and pressure reduction, and then enters the target device (such as a fuel cell) to participate in the reaction.

[0083] Further, before hydrogen production by using the above steps, argon and hydrogen are used in sequence to replace the impurity gas in the reaction container and each pipeline.

[0084] To sum up, the above is only the preferred embodiment of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A hydrogen production device based on an aluminum-water reaction, characterized in that, include: Reaction vessel, inlet pipe, outlet pipe, load-bearing components, aluminum alloy rods, drain pipe, monitoring components and controller; The support assembly is fixedly installed inside the reaction vessel, and several aluminum alloy rods are located inside the support assembly; The load-bearing assembly includes two or more support frames and several material frames; the two or more support frames are fixedly arranged side by side inside the reaction vessel; The support frame is a frame structure with several locking slots. The material frame has an opening at the top and several through holes on the side walls and bottom. The material frame passes sequentially through the slots on two or more support frames; Each feeder contains several aluminum alloy bars; The water inlet pipe, the sewage outlet pipe, and the hydrogen outlet pipe are connected to the reaction vessel. The water inlet pipe is used to introduce water into the reaction vessel, the sewage outlet pipe is used to discharge the reaction solution, and the hydrogen outlet pipe is used to discharge hydrogen gas. All aluminum alloy rods inside the reaction vessel remain submerged below the liquid surface; the aluminum alloy rods react with water to produce hydrogen gas and heat of reaction. The monitoring component is connected to the controller in communication; the monitoring component is used to acquire pressure data, temperature data and liquid level data in the reaction vessel in real time and transmit them to the controller. The controller can control the opening and closing of the water inlet pipe based on temperature data and the opening and closing of the drain pipe based on liquid level data. Through the inlet water and the discharge of the reaction solution, the reaction heat is discharged, so that the temperature and liquid level in the reaction vessel are dynamically stabilized. The controller can control the opening and closing of the hydrogen outlet pipe based on pressure data, thereby controlling the discharge of hydrogen and stabilizing the pressure inside the reaction vessel.

2. The hydrogen production device based on the aluminum-water reaction as described in claim 1, characterized in that, It also includes water jackets; The reaction vessel is a rotating body; A water jacket is coaxially arranged around the outer circumference of the reaction vessel, forming an annular cavity between the water jacket and the reaction vessel. The annular cavity is filled with a cooling medium, which exchanges heat with the external cooling device.

3. The hydrogen production device based on the aluminum-water reaction as described in claim 2, characterized in that, The hydrogen outlet pipe is spirally arranged around the outer circumference of the reaction vessel and located inside the annular cavity.

4. A hydrogen production apparatus based on an aluminum-water reaction as described in any one of claims 1-3, characterized in that, The monitoring components include temperature sensors, pressure sensors, and level gauges; Both pressure and temperature sensors are installed on the reaction vessel. The pressure sensor is used to acquire pressure data above the liquid surface, and the temperature sensor is used to acquire temperature data below the liquid surface. The level gauge is connected to the reaction vessel through upper and lower pipes to display the liquid level height in the reaction vessel in real time and transmit the liquid level data to the controller.

5. The hydrogen production device based on the aluminum-water reaction as described in claim 4, characterized in that, The number of pressure sensors is two or more, and the number of temperature sensors is two or more.

6. A hydrogen production apparatus based on an aluminum-water reaction as described in any one of claims 1-3, characterized in that, An inlet valve is installed on the inlet pipe, a drain valve is installed on the drain pipe, and an outlet valve is installed on the hydrogen outlet pipe; the inlet valve, drain valve, and outlet valve are all connected to the controller for communication. The controller can control the flow of the water inlet pipe by controlling the opening and closing of the water inlet valve; the controller can control the flow of the drain pipe by controlling the opening and closing of the drain valve; and the controller can control the flow of the hydrogen outlet pipe by controlling the opening and closing of the gas outlet valve.

7. A method for producing hydrogen based on an aluminum-water reaction, characterized in that, The method of the hydrogen production device based on the aluminum-water reaction as described in claim 6 is as follows: When the temperature data is higher than the set upper limit temperature, the controller controls the water inlet valve to open, and water enters the reaction vessel from the water inlet pipe; when the temperature data is lower than the lower limit temperature, the controller controls the water inlet valve to close. When the liquid level is higher than the set upper limit, the controller controls the drain valve to open; when the liquid level is lower than the set lower limit, the controller controls the drain valve to close. When the pressure data is greater than the upper pressure limit, the controller controls the outlet valve to open; when the pressure data is less than the lower pressure limit, the controller controls the outlet valve to close.

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