A biochar hydrogen production device for in-situ hydrogen storage

Abstract

This invention discloses an in-situ hydrogen production device using biomass charcoal, comprising an aqueous conversion mechanism, a steam superheating mechanism connected to the aqueous conversion mechanism, and an activation mechanism connected to the steam superheating mechanism for hydrogen production and storage. By integrating the hydrogen storage structure onto the activation chamber through the activation mechanism, this invention allows for in-situ storage of hydrogen during biomass charcoal generation. Furthermore, the electromagnetic waves within the activation mechanism can influence the hydrogen storage structure, thereby reducing energy consumption while increasing hydrogen storage capacity.

Description

Technical Field

[0001] This utility model relates to the field of biomass char hydrogen production technology, specifically to a biomass char hydrogen production device for in-situ hydrogen storage. Background Technology

[0002] As global pressure to reduce carbon emissions intensifies, traditional fossil fuel-based hydrogen production (such as coal-to-hydrogen and natural gas reforming) faces transformation pressure due to its high carbon emissions. Agricultural and forestry waste, organic solid waste, and other biomass have an annual output exceeding 100 billion tons. Pyrolysis carbonization technology can transform these waste resources into stable carbon-rich materials (biochar), achieving synergy between carbon sequestration and energy conversion.

[0003] In existing technologies, hydrogen production is generally achieved through the reaction of biochar with steam (also known as reforming or steam vaporization). This is an important technological path for converting solid biochar into clean hydrogen. However, because the hydrogen produced from biochar is not pure enough, it cannot be stored directly and generally needs to be purified before it can be liquefied and stored. Therefore, hydrogen purification equipment and hydrogen liquefaction and storage equipment are required, resulting in a large footprint for the entire equipment and high transportation costs from the manufacturer to the user.

[0004] Therefore, there is an urgent need to provide a biomass char hydrogen production device that occupies a small area and is convenient for solid in-situ hydrogen storage. Utility Model Content

[0005] The purpose of this invention is to propose an in-situ hydrogen storage biomass carbon-based hydrogen production device, which solves the problem that existing biomass carbon hydrogen production, purification, and liquefaction storage equipment in the background technology has an excessively large footprint, resulting in high transportation costs.

[0006] To achieve the above objectives, this utility model proposes an in-situ hydrogen storage biomass char hydrogen production device, including a water conversion mechanism, a steam superheating mechanism connected to the water conversion mechanism, and an activation mechanism connected to the steam superheating mechanism for hydrogen production and storage. The water conversion mechanism includes a conversion chamber, an inlet pipe connected to the conversion chamber for introducing water into the conversion chamber, a first heating structure for heating the water in the conversion chamber, and a conveying pipe assembly installed at one end on the conversion chamber for conveying steam to the steam superheating mechanism. The steam superheating mechanism is used to heat the steam entering the steam superheating mechanism. The activation mechanism includes an activation chamber, a reaction chamber located inside the activation chamber, and a hydrogen storage structure detachably installed in the reaction chamber. The superheated steam entering the activation mechanism first passes through the reaction chamber and contacts the biomass char to generate hydrogen, which then enters the hydrogen storage structure for storage.

[0007] Optionally, the water conversion mechanism also includes a safety valve installed on the top of the conversion chamber; the delivery pipe assembly includes a connecting pipe with one end installed on the top of the conversion chamber and connected to the inside of the conversion chamber, a first control valve installed on the connecting pipe, an empty pipe installed on the connecting pipe, and a first vent valve installed on the empty pipe.

[0008] Optionally, the first heating structure includes an electric heater installed inside the conversion chamber.

[0009] Optionally, the first heating structure further includes a heating cavity disposed on the wall of the conversion chamber, a waste heat inlet pipe installed at the top of the conversion chamber, and a waste heat outlet pipe installed at the bottom of the conversion chamber, wherein both the waste heat outlet pipe and the waste heat inlet pipe are connected to the heating cavity.

[0010] Optionally, the steam superheating mechanism includes a superheating chamber, a coil disposed within the superheating chamber, an electromagnetic coil wound around the outer wall of the coil, a superheated steam connecting pipe with one end mounted on the superheating chamber and connected to the coil, and one end of the coil connected to the delivery pipe assembly.

[0011] Optionally, the activation mechanism also includes a second heating structure installed in the activation chamber for heating the reaction chamber and the hydrogen storage structure, a gas purification structure installed on the top of the activation chamber, a purification inlet pipe installed on the activation chamber and connected to the gas purification structure, and a hydrogen storage inlet pipe installed on the gas purification structure and connected to the hydrogen storage structure.

[0012] Optionally, the activation chamber is provided with a steam chamber on its wall, steam inlets are evenly distributed on the inner wall of the activation chamber, a discharge valve is installed at the bottom of the activation chamber, and a hydrogen storage structure is located at the top inside the activation chamber; the steam chamber is connected to a steam superheating mechanism; the second heating structure is an electromagnetic coil installed on the outer wall of the activation chamber; the activation chamber is filled with biochar.

[0013] Optionally, the hydrogen storage structure includes a hydrogen storage chamber that can be detachably installed inside the activation chamber, a chamber cover that can be detachably installed on top of the hydrogen storage chamber, and an exhaust valve installed on the chamber cover; a pressurization pump is provided on the hydrogen storage inlet pipe; and the hydrogen storage chamber is connected to one end of the hydrogen storage inlet pipe.

[0014] Optionally, the gas purification structure includes a purification chamber installed on top of the activation chamber, and two partition plates installed inside the purification chamber, which divide the purification chamber into a spray zone, a sensing zone, and a purification zone.

[0015] Optionally, the sensing zone is located between the spray zone and the purification zone. The spray zone is connected to the purification inlet pipe, and the purification zone is connected to the hydrogen storage structure through the hydrogen storage inlet pipe.

[0016] Optionally, the partition plate is provided with vent holes, each of which is equipped with a gas diffuser.

[0017] Optionally, a spray pipe is installed in the spray area, with spray heads installed at equal intervals on the spray pipe, and a drain pipe is installed at the bottom of the spray area.

[0018] Optionally, a metal tube is installed in the sensing area, and an electrode wire is provided inside the metal tube.

[0019] Optionally, a pull-out box is detachably installed in the purification zone. A layered plate is detachably installed inside the pull-out box. A guide block is provided on the outer wall of the layered plate, and a guide groove adapted to the guide block is provided on the pull-out box.

[0020] Compared with the prior art, this utility model provides an in-situ hydrogen storage and hydrogen production device from biomass charcoal, which has the following beneficial effects: This in-situ hydrogen storage biomass char hydrogen production device integrates the hydrogen storage structure into the activation chamber through the setting of the activation mechanism, so that when hydrogen is generated by biomass char, hydrogen can be stored in situ, reducing the footprint of the entire device. In addition, the hydrogen storage structure is placed on the activation mechanism. The electromagnetic waves in the activation mechanism can affect the hydrogen storage structure, which can reduce energy consumption while increasing the amount of hydrogen stored. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the structure of the water-state conversion mechanism of this utility model.

[0023] Figure 3 This is a cross-sectional view of the water state conversion mechanism of this utility model.

[0024] Figure 4 This is a schematic diagram of the steam superheating mechanism of this utility model.

[0025] Figure 5 This is a schematic diagram of the activation mechanism of this utility model.

[0026] Figure 6 This is a schematic diagram of the activation mechanism of this utility model from another perspective.

[0027] Figure 7 This is a cross-sectional view of the activation mechanism of this utility model.

[0028] Figure 8 This is a schematic diagram of the gas purification structure of this utility model.

[0029] Figure 9 This is a schematic diagram of the gas purification structure of this utility model from another perspective.

[0030] Figure 10This is a cross-sectional view of the gas purification structure of this utility model.

[0031] Figure 11 This is a schematic diagram of the structure of the separator plate and gas diffuser that separate the spray zone and the sensing zone of this utility model.

[0032] Figure 12 This is a schematic diagram of the structure of the separator plate and gas diffuser that separate the sensing zone and the purification zone of this utility model.

[0033] Figure 13 This is a structural schematic diagram of the pull-out box of this utility model.

[0034] Figure 14 This is a cross-sectional view of the water state conversion mechanism in Embodiment 2 of this utility model.

[0035] The diagram shows: 1. Water conversion mechanism; 11. Conversion chamber; 12. Water inlet pipe; 13. First heating structure; 131. Electric heater; 132. Heating chamber; 133. Waste heat inlet pipe; 134. Waste heat outlet pipe; 14. Conveying pipe assembly; 141. Connecting pipe; 142. First control valve; 143. Drain pipe; 144. First vent valve; 15. Safety valve; 2. Steam superheating mechanism; 21. Superheating chamber; 22. Coil; 23. Electromagnetic coil; 24. Superheated steam connecting pipe; 3. Activation mechanism; 31. Activation chamber; 311. Steam chamber; 312. Steam inlet; 313. Discharge valve; 314. Mounting hole; 315. Sealing ring; 31 6. Second vent valve; 32. Reaction chamber; 33. Hydrogen storage structure; 331. Hydrogen storage chamber; 332. Chamber cover; 333. Exhaust valve; 34. Second heating structure; 35. Gas purification structure; 351. Purification chamber; 352. Divider plate; 3521. Vent hole; 3522. Gas diffuser; 353. Spray zone; 3531. Spray pipe; 3532. Spray head; 3533. Drain pipe; 354. Sensing zone; 3541. Metal pipe; 3542. Electrode wire; 355. Purification zone; 3551. Pull-out box; 3552. Layered plate; 3553. Guide block; 3554. Guide groove; 36. Purification inlet pipe; 37. Hydrogen storage inlet pipe. Detailed Implementation

[0036] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, illustrates the present invention. Numerous specific details are set forth in the description below to provide a thorough understanding of the invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] The biomass char hydrogen production device for in-situ hydrogen storage described in this application can be applied to applications such as biomass char hydrogen production and storage, and of course, it can also be used in other similar application scenarios. The following is a detailed description of the biomass char hydrogen production device for in-situ hydrogen storage.

[0038] Example 1 See appendix Figure 1 — Figure 13 The diagram shows a preferred embodiment of a biomass char hydrogen production device for in-situ hydrogen storage according to this application. The device includes an aqueous conversion mechanism 1, a steam superheating mechanism 2 connected to the aqueous conversion mechanism 1, and an activation mechanism 3 connected to the steam superheating mechanism 2 for hydrogen production and storage.

[0039] This invention utilizes a water-state conversion mechanism 1 to heat water to boiling, forming steam. The steam is then transported into a steam superheating mechanism 2, which heats the steam to the required temperature for the reaction. The superheated steam then enters an activation mechanism 3, where it reacts with biochar to produce carbon monoxide and hydrogen. The carbon monoxide and hydrogen are then purified and filtered to obtain hydrogen, which is then stored in situ. This application integrates hydrogen production, purification, and storage into a single activation mechanism 3, thereby reducing space requirements and transportation costs.

[0040] See appendix Figure 1 — Figure 3 As shown, in this utility model, the water conversion mechanism 1 includes a conversion chamber 11, an inlet pipe 12 connected to the conversion chamber 11 for supplying water to the conversion chamber 11, a first heating structure 13 for heating the water in the conversion chamber 11, a conveying pipe group 14 with one end installed on the conversion chamber 11 for conveying water vapor to the steam superheating mechanism 2, and a safety valve 15 installed on the top of the conversion chamber 11.

[0041] This invention utilizes a conversion chamber 11 to provide storage space for water; a water inlet pipe 12, equipped with a switch valve, to add water into the conversion chamber 11; a first heating structure 13 to heat the water within the conversion chamber 11; a conveying pipe assembly 14 to transport steam to the steam superheating mechanism 2; and a safety valve 15 to protect the conversion chamber 11 from excessive pressure and potential danger.

[0042] See appendix Figure 1 — Figure 3As shown, in this utility model, the first heating structure 13 includes an electric heater 131 installed in the conversion chamber 11. The electric heater is an electric heating tube with temperature control, which is the prior art. Therefore, it will not be described in detail in this application. A sealing ring is placed at the installation position of the electric heater 131.

[0043] See appendix Figure 1 — Figure 3 As shown, in this utility model, the conveying pipe assembly 14 includes a connecting pipe 141 with one end installed on the top of the conversion chamber 11 and connected to the inside of the conversion chamber 11, a first control valve 142 installed on the connecting pipe 141, an vent pipe 143 installed on the connecting pipe 141, and a first vent valve 144 installed on the vent pipe 143.

[0044] This invention utilizes a connecting pipe 141 to transport steam to the steam superheating mechanism 2; a first control valve 142 to control the connection of the connecting pipe 141; a vent pipe 143 to vent the steam in the conversion chamber 11; and a first vent valve 144 to control the connection of the vent pipe 143. It should be noted that the connection point between the vent pipe 143 and the connecting pipe 141 is located between the first control valve 142 and the top of the conversion chamber 11. Gas will first pass through the connection point between the connecting pipe 141 and the vent pipe 143, and then through the first control valve 142.

[0045] See appendix Figure 4 As shown, in this utility model, the steam superheating mechanism 2 includes a superheating chamber 21, a coil 22 disposed within the superheating chamber 21, an electromagnetic coil 23 wound around the outer wall of the coil 22, and a superheated steam connecting pipe 24 with one end mounted on the superheating chamber 21 and connected to the coil 22. One end of the coil 22 is connected to the connecting pipe 141 in the conveying pipe assembly 14. It should be noted that the coil 22 is a finned coil.

[0046] This invention provides installation space for the coil 22 and electromagnetic coil 23 through the superheated chamber 21, preventing users from being burned by contact with the electromagnetic coil 23 and the coil 22, thus protecting user safety. By winding the electromagnetic coil 23 around the coil 22, the coil 22 is heated, thereby reheating the water vapor inside the coil 22 to 350℃~850℃, causing the water vapor to be superheated. It should be noted that a temperature sensor facing the electromagnetic coil 23 and the coil 22 is installed outside the superheated chamber 21. This temperature sensor is connected to an external PLC controller. When the temperature sensor detects that the temperature of the electromagnetic coil 23 is too high or too low, it sends a signal to the PLC controller. The PLC controller will then control the electromagnetic coil 23 to be energized for heating or de-energized for cooling, which is the same principle as the electric heater 131. This temperature control is prior art, so it will not be described in detail here.

[0047] See appendix Figure 5 — Figure 13 As shown, in this utility model, the activation mechanism 3 includes an activation chamber 31, a reaction chamber 32 located inside the activation chamber 31, a hydrogen storage structure 33 detachably installed inside the reaction chamber 32, a second heating structure 34 installed inside the activation chamber 31 for heating the reaction chamber 32 and the hydrogen storage structure 33, a gas purification structure 35 installed on the top of the activation chamber 31, a purification inlet pipe 36 installed on the activation chamber 31 and connected to the gas purification structure 35, and a hydrogen storage inlet pipe 37 installed on the gas purification structure 35 and connected to the hydrogen storage structure 33; it should be noted that the purification inlet pipe 36 is a flexible hose.

[0048] This invention provides a reaction chamber 32, in which biomass char reacts with superheated steam to generate hydrogen and carbon monoxide. A hydrogen storage structure 33 stores the purified hydrogen. A second heating structure 34 heats the environment within the reaction chamber 32 to ensure the temperature matches the reaction temperature of the steam and biomass char. A gas purification structure 35 purifies the carbon monoxide and hydrogen generated from the reaction of biomass char and steam, removing carbon monoxide and increasing hydrogen purity, allowing the hydrogen to enter the hydrogen storage structure 33 for storage.

[0049] See appendix Figure 5 — Figure 13As shown, in this utility model, the activation chamber 31 has a steam chamber 311 on its wall, steam inlets 312 evenly distributed on the inner wall of the activation chamber 31, a discharge valve 313 installed at the bottom of the activation chamber 31, and a hydrogen storage structure 33 located at the top inside the activation chamber 31; wherein, the steam chamber 311 is connected to the coil 22 through a pipe; the second heating structure 34 is an electromagnetic heating coil installed on the inner wall of the activation chamber 31; the activation chamber 31 is filled with biochar.

[0050] This invention utilizes a steam chamber 311 to provide temporary storage space for superheated steam; uniformly arranged steam inlets 312 allow the superheated steam in the steam chamber 311 to enter the activation chamber 31 evenly and react with the biochar; a discharge valve 313 allows the reacted biochar to be removed; and by placing the hydrogen storage structure 33 on top of the activation chamber 31, the insertion and removal of biochar are avoided, while the temperature environment inside the activation chamber 31 can affect the hydrogen storage structure 33, eliminating the need for a separate heating structure.

[0051] See appendix Figure 5 — Figure 13 As shown, in this utility model, the hydrogen storage structure 33 includes a hydrogen storage chamber 331 that is detachably installed inside the activation chamber 31 and connected to the hydrogen storage inlet pipe 37, a chamber cover 332 that is detachably installed on the top of the hydrogen storage chamber 331, and an exhaust valve 333 installed on the chamber cover 332; a pressurizing pump is provided on the hydrogen storage inlet pipe 37, which can be installed on the purification chamber 351.

[0052] This invention, through the provision of a hydrogen storage chamber 331, provides space for placing hydrogen storage materials, which can be used as hydrogen storage materials. Alloy or ammonia borane ( The hydrogen storage chamber 331 is sealed by a cover 332, which increases the environmental pressure inside the chamber. An exhaust valve 333 is used to release air and effectively prevent excessive pressure within the chamber. A pressurization pump accelerates the gas flow within the gas purification structure 35 while simultaneously pressurizing the gas, thus pressurizing the space inside the hydrogen storage chamber 331. It should be noted that the top of the activation chamber 31 has an installation hole 314, into which a sealing ring 315 is installed. A second vent valve 316 is installed on the top of the activation chamber 31. A lifting ring can be installed in the threaded hole on the top of the hydrogen storage chamber 331. After the cover 332 is removed, the hydrogen storage chamber 331 can be lifted and disassembled using a crane or similar equipment. Before lifting, the cover 332 must be removed by the operator.

[0053] See appendix Figure 5 — Figure 13 As shown, in this utility model, the gas purification structure 35 includes a purification chamber 351 installed on top of the activation chamber 31, and two partition plates 352 installed inside the purification chamber 351. The two partition plates 352 divide the purification chamber 351 into a spray zone 353, a sensing zone 354, and a purification zone 355. The sensing zone 354 is located between the spray zone 353 and the purification zone 355. The spray zone 353 is connected to the purification inlet pipe 36, and the purification zone 355 is connected to the hydrogen storage structure 33 through the hydrogen storage inlet pipe 37. It should be noted that a valve is also provided on the purification inlet pipe 36.

[0054] This invention, through the arrangement of the partition plate 352, divides the internal space of the purification chamber 351 into a spray zone 353, a sensing zone 354, and a purification zone 355. Within the spray zone 353, carbon monoxide and hydrogen gases are cooled, causing coarse particles in the gas to settle. and The gas is dissolved, and the purification zone 355 is used to adsorb gases other than hydrogen to ensure the purity of the hydrogen introduced into the hydrogen storage structure 33.

[0055] See appendix Figure 5 — Figure 13 As shown, in this invention, each partition plate 352 is provided with a vent hole 3521, and a gas diffuser 3522 is installed on each vent hole 3521; a spray pipe 3531 is installed in the spray zone 353, and spray heads 3532 are installed at equal intervals on the spray pipe 3531; a drain pipe 3533 is installed at the bottom of the spray zone 353; a metal tube 3541 is installed in the sensing zone 354, and an electrode wire 3542 is installed inside the metal tube 3541, which is connected to an external power source; a pull-out box 3551 is detachably installed in the purification zone 355, and a layered plate 3552 is detachably installed inside the pull-out box 3551, with a guide block 3553 on the outer wall of the layered plate 3552. The pull-out box 3551 is provided with a guide groove 3554 that matches the guide block 3553; the bottom of the pull-out box 3551 is provided with an air inlet, and alumina particles are filled between the bottom of the pull-out box 3551 and the layered plate 3552 with the smallest straight-line distance. The diameter of the air inlet is smaller than the size of the alumina particles; carbon molecular sieve is filled between the two layered plates 3552. The layered plate used to separate the alumina particles and the carbon molecular sieve particles is provided with through holes, and the diameter of the through holes is smaller than the size of the carbon molecular sieve particles; 13X zeolite is placed on the top of the layered plate located on top of the carbon molecular sieve particles, and the layered plate used to support the 13X zeolite is also provided with through holes, and the diameter of the through holes is smaller than the size of the 13X zeolite.

[0056] It should be noted that the gas diffuser 3522, the metal tube 3541, and the electrode wire 3542 are all prior art. The metal tube 3541 and the electrode wire 3542 are electrostatic decoking devices in the prior art, so they will not be described in detail here. The pull-out box 3551 is detachably installed on the purification chamber 351 by hand-tightening bolts. The partition plate 352 is installed by bolts and can be disassembled.

[0057] This invention utilizes a vent 3521 to connect the spray zone 353, sensing zone 354, and purification zone 355, allowing gas to pass sequentially through these zones for treatment. A gas diffuser 3522 diffuses the gas, ensuring even distribution within each zone for uniform treatment. A spray pipe 3531 provides a water source, which, in conjunction with the spray head 3532, sprays water to treat the gas, removing water-soluble components from the gas entering the purification chamber 351. The process involves removing impurities; the pull-out box 3551 provides space for placing and replacing the particles; the layered plate 3552 separates the alumina particles, carbon molecular sieve particles, and 13X zeolite particles; the alumina particles remove moisture from the gas; the carbon molecular sieve particles capture gases such as carbon monoxide, oxygen, and nitrogen; and the 13X zeolite particles adsorb any remaining gases such as carbon monoxide, oxygen, and nitrogen. The purified hydrogen then enters the hydrogen storage structure 33 through the hydrogen storage inlet pipe 37.

[0058] See appendix Figure 1 — Figure 13 As shown, the working principle of this utility model is as follows: First, water enters the conversion chamber 11 through the inlet pipe 12. After a specified amount of water is added, the inlet pipe 12 is closed by the switch valve. Then, the first heating structure 13 heats the water in the conversion chamber 11, causing it to boil and form steam. When steam is formed, the connecting pipe 141 is closed by the first control valve 142, and the first vent valve 144 is opened to connect the vent pipe 143, allowing air to be released from the conversion chamber 11. After a period of time, the first vent valve 144 is closed, and the first control valve 142 is opened, allowing steam to enter the coil 22 through the connecting pipe 141. The electromagnetic coil 23 heats the coil 22, reheating the steam inside and superheating it. Then, steam enters from the other end of the coil 22. The steam enters the steam chamber 311. After the steam chamber 311 is filled with water vapor, it enters the reaction chamber 32 through the steam inlet 312. At this time, the second vent valve 316 is opened, and the purification inlet pipe 36 is closed through the valve. After the specified time for discharge, the second vent valve 316 is closed, and the purification inlet pipe 36 is opened through the valve, so that the water vapor reacts with the biochar to generate carbon monoxide and hydrogen. At this time, the mixed gas of carbon monoxide and hydrogen enters the purification chamber 351 of the gas purification structure 35 through the purification inlet pipe 36, and passes through the spray zone 353, the sensing zone 354 and the purification zone 355 in sequence to remove other gases in the mixed gas. The purified hydrogen enters the hydrogen storage structure 33 through the hydrogen storage inlet pipe 37 and the pressurization pump, and the hydrogen storage material stores the hydrogen.

[0059] Example 2 See appendix Figure 14 As shown, the difference between this embodiment and the above embodiment is that, in this embodiment, the first heating structure 13 further includes a heating cavity 132 disposed on the wall of the conversion chamber 11, a waste heat inlet pipe 133 installed at the top of the conversion chamber 11, and a waste heat outlet pipe 134 installed at the bottom of the conversion chamber 11. Both the waste heat outlet pipe 134 and the waste heat inlet pipe 133 are connected to the heating cavity 132.

[0060] The difference between this embodiment and the above embodiment is that, in this embodiment, by setting up the heating chamber 132, in conjunction with the waste heat inlet pipe 133 and the waste heat outlet pipe 134, the waste heat is utilized so that the waste heat can heat the water, thereby reducing the energy required for heating.

[0061] The above embodiments are illustrative of this application and are not intended to limit this application. Any simple modifications to this application are within the protection scope of this application.

Claims

1. A biomass charcoal hydrogen production device for in-situ hydrogen storage, comprising a water state conversion mechanism (1), and a steam superheating mechanism (2) connected with the water state conversion mechanism (1), characterized in that, It also includes an activation mechanism (3) connected to the steam superheating mechanism (2) for hydrogen production and storage; The water conversion mechanism (1) includes a conversion chamber (11), an inlet pipe (12) connected to the conversion chamber (11) for supplying water to the conversion chamber (11), a first heating structure (13) for heating the water in the conversion chamber (11), and a conveying pipe group (14) installed on the conversion chamber (11) for conveying water vapor to the steam superheating mechanism (2). The steam superheating mechanism (2) is used to reheat the steam entering the steam superheating mechanism (2); The activation mechanism (3) includes an activation chamber (31), a reaction chamber (32) located inside the activation chamber (31), and a hydrogen storage structure (33) detachably installed inside the reaction chamber (32). The superheated steam entering the activation mechanism (3) first passes through the reaction chamber (32) and comes into contact with the biochar to generate hydrogen gas, which then enters the hydrogen storage structure (33) for hydrogen storage.

2. The biomass char hydrogen production device for in-situ hydrogen storage according to claim 1, characterized in that, The water conversion mechanism (1) also includes a safety valve (15) installed on the top of the conversion chamber (11); The conveying pipe assembly (14) includes a connecting pipe (141) with one end installed on the top of the conversion chamber (11) and connected to the inside of the conversion chamber (11), a first control valve (142) installed on the connecting pipe (141), an empty pipe (143) installed on the connecting pipe (141), and a first vent valve (144) installed on the empty pipe (143).

3. The biomass char hydrogen production device for in-situ hydrogen storage according to claim 1, characterized in that, The first heating structure (13) includes an electric heater (131) installed in the conversion chamber (11).

4. The biomass char hydrogen production device for in-situ hydrogen storage according to claim 3, characterized in that, The first heating structure (13) also includes a heating chamber (132) disposed on the wall of the conversion chamber (11), a waste heat inlet pipe (133) installed on the top of the conversion chamber (11), and a waste heat outlet pipe (134) installed on the bottom of the conversion chamber (11). The waste heat outlet pipe (134) and the waste heat inlet pipe (133) are both connected to the heating chamber (132).

5. The biomass char hydrogen production device for in-situ hydrogen storage according to claim 1, characterized in that, The steam superheating mechanism (2) includes a superheating chamber (21), a coil (22) installed in the superheating chamber (21), an electromagnetic coil (23) wound on the outer wall of the coil (22), and a superheated steam connecting pipe (24) with one end installed on the superheating chamber (21) and connected to the coil (22). One end of the coil (22) is connected to the conveying pipe group (14).

6. The biomass char hydrogen production device for in-situ hydrogen storage according to claim 1, characterized in that, The activation mechanism (3) further includes a second heating structure (34) installed in the activation chamber (31) for heating the reaction chamber (32) and the hydrogen storage structure (33), a gas purification structure (35) installed on the top of the activation chamber (31), a purification inlet pipe (36) installed on the activation chamber (31) and connected to the gas purification structure (35), and a hydrogen storage inlet pipe (37) installed on the gas purification structure (35) and connected to the hydrogen storage structure (33).

7. The biomass char hydrogen production device for in-situ hydrogen storage according to claim 6, characterized in that, The activation chamber (31) is provided with a steam chamber (311) on its wall, a steam inlet (312) is evenly arranged on the inner wall of the activation chamber (31), and a discharge valve (313) is installed at the bottom of the activation chamber (31). The hydrogen storage structure (33) is located at the top inside the activation chamber (31). The steam chamber (311) is connected to the steam superheating mechanism (2); The second heating structure (34) is an electromagnetic coil installed on the inner wall of the activation chamber (31); The activation chamber (31) is filled with biochar.

8. The biomass char hydrogen production device for in-situ hydrogen storage according to claim 7, characterized in that, The hydrogen storage structure (33) includes a hydrogen storage chamber (331) that can be detachably installed in the activation chamber (31), a chamber cover (332) that can be detachably installed on the top of the hydrogen storage chamber (331), and an exhaust valve (333) installed on the chamber cover (332). A pressure pump is installed on the hydrogen storage inlet pipe (37); The hydrogen storage chamber (331) is connected to one end of the hydrogen storage inlet pipe (37).

9. The biomass char hydrogen production device for in-situ hydrogen storage according to claim 6, characterized in that, The gas purification structure (35) includes a purification chamber (351) installed on top of the activation chamber (31), and two partition plates (352) installed inside the purification chamber (351). The two partition plates (352) divide the purification chamber (351) into a spray zone (353), a sensing zone (354), and a purification zone (355). The sensing zone (354) is located between the spray zone (353) and the purification zone (355). The spray zone (353) is connected to the purification inlet pipe (36), and the purification zone (355) is connected to the hydrogen storage structure (33) through the hydrogen storage inlet pipe (37).

10. The biomass char hydrogen production device for in-situ hydrogen storage according to claim 9, characterized in that, The partition plate (352) is provided with ventilation holes (3521), and each ventilation hole (3521) is equipped with a gas diffuser (3522). A spray pipe (3531) is installed in the spray area (353), and spray heads (3532) are installed at equal intervals on the spray pipe (3531). A drain pipe (3533) is installed at the bottom of the spray area (353). A metal tube (3541) is installed in the sensing area (354), and an electrode wire (3542) is provided inside the metal tube (3541). The purification zone (355) is detachably equipped with a pull-out box (3551), and a layered plate (3552) is detachably equipped inside the pull-out box (3551). A guide block (3553) is provided on the outer wall of the layered plate (3552), and a guide groove (3554) adapted to the guide block (3553) is provided on the pull-out box (3551).

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