Organic liquid hydrogen storage and supply device with dehydrogenation function

Abstract

The application discloses a kind of organic liquid hydrogen storage hydrogen supply equipment with dehydrogenation function, specifically relates to liquid hydrogen storage field, including liquid hydrogen storage tank and hydrogen supply tank, the output end of the material pump is connected with preheating feed section by pipeline, one end of the preheating feed section is connected with the feed end of dehydrogenation reactor, the upper end of the dehydrogenation reactor is provided with hydrogen outlet, the hydrogen outlet is connected with preheating feed section by pipeline, one end of the preheating feed section is connected with hydrogen purifier by pipeline, and the output end of the hydrogen purifier is connected with hydrogen supply tank.The liquid hydrogen in the inside of the material conveying plate can be preheated, so that the temperature of the liquid hydrogen entering the inside of the dehydrogenation reactor is higher, and the use of the electric heater inside the dehydrogenation reactor is reduced;And preheating plate and material conveying plate are both provided in serpentine structure, which can improve the preheating effect of liquid hydrogen, and separate the hydrogen-poor LOHC liquid in high-temperature gas from hydrogen.

Description

Technical Field

[0001] This invention relates to the field of liquid hydrogen storage equipment technology, specifically to an organic liquid hydrogen storage and supply equipment with dehydrogenation function. Background Technology

[0002] Hydrogen fuel cells have advantages such as high energy conversion efficiency, low vibration and noise, and high technological maturity. The only emission is water, and they are gradually becoming the mainstream energy source for ships.

[0003] The main constraints on the use of hydrogen energy in ships lie in three aspects: hydrogen production, storage, transportation, and utilization. Currently, there are four main methods for hydrogen storage and transportation: high-pressure gaseous hydrogen storage, cryogenic liquid hydrogen storage, organic liquid storage and transportation, and solid-state hydrogen storage. Among these, liquid organic hydrogen storage utilizes unsaturated liquid organic compounds such as alkenes, alkynes, and aromatics. Through hydrogenation reactions, hydrogen is fixed into intramolecularly bound liquid compounds to achieve hydrogen storage. Compared with other hydrogen storage methods, liquid organic hydrogen storage has a high volumetric hydrogen storage density, high purity, and a safe and efficient storage process, showing great development potential. Utilizing liquid organic hydrogen storage materials for hydrogen storage and transportation mainly involves two reactions: hydrogenation and dehydrogenation. The dehydrogenation reaction requires heat absorption, and the dehydrogenation products need to be separated into hydrogen using a gas-liquid separator. Then, a hydrogen buffer tank is used to buffer the hydrogen before it can be supplied to the hydrogen supply unit.

[0004] For example, Chinese patent application number 202211230822.X discloses a dehydrogenation and hydrogen supply system for liquid organic hydrogen storage materials. By setting up a preheating section and a catalytic dehydrogenation section arranged vertically, during operation, the liquid organic hydrogen storage material is injected from the top of the dehydrogenation device and flows from top to bottom through the preheating section and the catalytic dehydrogenation section under the action of gravity for preheating and dehydrogenation. The generated hydrogen is discharged directly from the hydrogen outlet at the top. In addition to preheating the freshly injected liquid organic hydrogen storage material at a lower temperature, the preheating section also condenses the organic hydrogen storage material or impurities that have volatilized due to the excessively high temperature at the bottom, thereby improving the purity of the final hydrogen obtained.

[0005] However, existing organic liquid hydrogen storage and supply equipment produces hydrogen gas at high temperatures from the dehydrogenation reactor during use, which wastes resources and makes subsequent gas-liquid separation difficult. Summary of the Invention

[0006] The purpose of this invention is to provide an organic liquid hydrogen storage and supply device with dehydrogenation function to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An organic liquid hydrogen storage and supply device with dehydrogenation function includes a liquid hydrogen storage tank and a hydrogen supply tank. The bottom end of the liquid hydrogen storage tank is connected to the input end of a pumping pump via a pipe 1. The output end of the pumping pump is connected to a preheating feeding section via a pipe 2. One end of the preheating feeding section is connected to the feed end of a dehydrogenation reactor. The upper end of the dehydrogenation reactor is provided with a hydrogen outlet. The hydrogen outlet is connected to the preheating feeding section via a pipe 3. The other end of the preheating feeding section is connected to a hydrogen purifier via a pipe 4. The output end of the hydrogen purifier is connected to the hydrogen supply tank. The hydrogen supply tank is connected to the hydrogen user end via a hydrogen supply pipe.

[0009] In a preferred embodiment, the liquid hydrogen storage tank has a filling port at its upper end and a discharge port at its lower end. Both the filling port and the discharge port are equipped with sealing covers. A flow meter and a control valve are installed on the pipeline between the liquid hydrogen storage tank and the pump. The filling port facilitates the addition of liquid hydrogen, while the discharge port facilitates the discharge of liquid hydrogen from the liquid hydrogen storage tank.

[0010] In a preferred embodiment, the preheating feeding section includes a conveying plate, and a preheating plate is provided on the outer side of the conveying plate. One end of the preheating plate is connected to the hydrogen outlet through pipe three, and the other end of the preheating plate is connected to the input end of the hydrogen purifier through pipe four. One end of the conveying plate is connected to the output end of the pump through pipe two, and one end of the conveying plate is connected to the feed end of the dehydrogenation reactor through pipe five. The conveying plate can be used to transport liquid hydrogen, while the internal cavity of the preheating plate is used to transport hydrogen discharged from the dehydrogenation reactor.

[0011] In a preferred embodiment, both the conveying plate and the preheating plate are arranged in a serpentine structure. A support plate is fixedly installed on the inner sidewall of the bottom end of the preheating plate. An installation groove is formed on one sidewall of the support plate, and a float is movably placed inside the installation groove. A counterweight is installed at the lower end of the float, and a piston rod is fixedly installed at the bottom end of the counterweight. A pull rope is installed at the bottom end of the piston rod, and one end of the pull rope passes through the sidewall of the preheating plate and is connected to a pressing block. A button is installed below the pressing block. High-temperature hydrogen gas discharged from the dehydrogenation reactor enters the interior of the preheating plate, which can press the conveying plate inside the preheating plate. The heat is used to preheat the liquid hydrogen inside the feed plate. The high-temperature hydrogen gas discharged from the dehydrogenation reactor contains a large amount of hydrogen-deficient LOHC liquid. As it passes through the preheating plate, it continuously impacts the outer wall of the feed plate and the inner wall of the preheating plate, which can separate the hydrogen gas from the hydrogen-deficient LOHC liquid. This causes the hydrogen-deficient LOHC liquid to accumulate at the bottom of the preheating plate. When there is a large amount of hydrogen-deficient LOHC liquid at the bottom of the preheating plate, it can support the float ball, which in turn causes the piston rod to drive the pull rope to move. When the pull rope pulls the pressing block upward to a certain position, the pressing block separates from the button, and the hydrogen-deficient LOHC liquid inside the preheating plate is discharged.

[0012] In a preferred embodiment, the button is mounted on an L-shaped support frame, a limiting slider is fixedly mounted on one side wall of the pressing block, a limiting groove is formed on one side wall of the L-shaped support frame, and the limiting slider is slidably mounted in the limiting groove. The setting of the limiting slider and the limiting groove facilitates the movement of the pressing block.

[0013] In a preferred embodiment, the support plate inside the preheating plate is located at one end near the pump, and multiple bottom positions of the preheating plate are provided with drain ports, each drain port is provided with a drain pipe, and the bottom ends of the multiple drain pipes are all connected to the same recovery pipe.

[0014] In a preferred embodiment, one end of the recovery pipe is connected to a recovery tank, each of the drain pipes is equipped with a solenoid valve, the drain port at the bottom of the dehydrogenation reactor is connected to the recovery tank through a pipe, and a liquid level sensor is installed inside the recovery tank.

[0015] In a preferred embodiment, the dehydrogenation reactor is internally equipped with multiple catalyst plates. Each catalyst plate has a cavity filled with catalyst. The catalyst plate has through holes communicating with the cavities. A filter screen is located below the catalyst plates inside the dehydrogenation reactor, positioned inside a support frame. Connecting rods are fixedly mounted on both sides of the upper end of the support frame, with the upper ends of the connecting rods fixedly mounted on the bottom ends of the catalyst plates. A movable cover is threadedly sealed at the top of the dehydrogenation reactor. A drive motor is fixedly mounted at the center of the top of the movable cover. The output shaft of the drive motor is fixedly connected to a rotating shaft inside the dehydrogenation reactor. A rotating shaft passes through the catalyst plate, and a stirring rod is installed on the side wall inside the catalyst plate on the rotating shaft. Both the catalyst plate and the support frame are movably connected to the inner wall of the dehydrogenation reactor, and sealing gaskets are installed on the outer walls of both the catalyst plate and the support frame. Multiple electric heaters are embedded in the inner wall of the dehydrogenation reactor. When the drive motor rotates the rotating shaft, it can drive the stirring rod to rotate. The stirring rod stirs the catalyst inside the catalyst plate, making the catalyst more effective in dehydrogenating liquid hydrogen. The catalyst plate is connected to the rotating shaft, and the filter screen is connected to the catalyst plate. By removing the movable cover, the catalyst plate and the filter plate can be removed together, which facilitates the replacement of the catalyst and the cleaning of the filter screen.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. This invention incorporates a preheating feeding section, which guides the high-temperature gas discharged from the dehydrogenation reactor into the preheating plate within the preheating feeding section. The high-temperature gas heats the conveying plate inside the preheating plate, thereby preheating the liquid hydrogen inside the conveying plate. This results in a higher temperature of the liquid hydrogen entering the dehydrogenation reactor, leading to better catalytic reaction with the catalyst and higher dehydrogenation efficiency. Furthermore, it reduces the power consumption of the electric heater inside the dehydrogenation reactor. Both the preheating plate and the conveying plate are designed with a serpentine structure, which not only improves the preheating effect of the liquid hydrogen but also separates the hydrogen-poor LOHC liquid from the hydrogen gas, reducing the need for a subsequent gas-liquid separator. By incorporating a float, counterweight, piston rod, pull rope, pressing block, drain pipe, and recovery pipe at the preheating plate, the collected liquid can be recovered based on the amount of liquid inside the preheating plate, resulting in a high degree of automation and ease of use.

[0018] 2. This invention incorporates a drive motor, a rotating shaft, a stirring rod, a connecting rod, a filter screen, a support frame, and a movable cover. The drive motor rotates the rotating shaft and stirring rod to stir the catalyst inside the catalyst plate, resulting in better dehydrogenation of liquid hydrogen. Both the catalyst plate and the filter screen are connected to the rotating shaft, and the movable cover can be removed to directly take out the catalyst plate and filter screen, facilitating the replacement of the catalyst inside the catalyst plate and the cleaning of impurities on the filter screen. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a partial cross-sectional view of the preheating feeding section of the present invention.

[0022] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0023] Figure 4 This is a schematic diagram of the structure of the support plate of the present invention;

[0024] Figure 5 For the present invention Figure 3 Enlarged schematic diagram of the structure at point B;

[0025] Figure 6 This is a schematic cross-sectional view of the internal structure of the dehydrogenation reactor of the present invention.

[0026] In the diagram: 1. Liquid hydrogen storage tank; 2. Hydrogen supply tank; 4. Pump; 5. Preheating feeding section; 501. Conveying plate; 502. Preheating plate; 503. Support plate; 504. Mounting groove; 505. Float; 506. Counterweight; 507. Piston rod; 508. Pull rope; 509. Pressing block; 510. Button; 511. L-shaped support frame; 512. Limiting slider; 513. Limiting groove; 514. Drain pipe; 515. Recovery pipe; 516. Recovery box 517. Solenoid valve; 6. Dehydrogenation reactor; 601. Catalyst plate; 602. Catalyst; 603. Penetration hole; 604. Filter screen; 605. Support frame; 606. Connecting rod; 607. Movable cover; 608. Drive motor; 609. Rotating shaft; 610. Electric heater; 7. Hydrogen outlet; 8. Hydrogen purifier; 9. Filling port; 10. Discharge port; 11. Flow meter; 12. Control valve. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1:

[0029] Please see Figures 1-5 This invention provides an organic liquid hydrogen storage and supply device with dehydrogenation function, the technical solution of which is as follows:

[0030] An organic liquid hydrogen storage and supply device with dehydrogenation function includes a liquid hydrogen storage tank 1 and a hydrogen supply tank 2. The bottom end of the liquid hydrogen storage tank 1 is connected to the input end of a pump 4 via a pipe 1. The output end of the pump 4 is connected to a preheating feed section 5 via a pipe 2. One end of the preheating feed section 5 is connected to the feed end of a dehydrogenation reactor 6. The upper end of the dehydrogenation reactor 6 is provided with a hydrogen outlet 7. The hydrogen outlet 7 is connected to the preheating feed section 5 via a pipe 3. The other end of the preheating feed section 5 is connected to a hydrogen purifier 8 via a pipe 4. The output end of the hydrogen purifier 8 is connected to the hydrogen supply tank 2. The hydrogen supply tank 2 is connected to the hydrogen user end via a hydrogen supply pipe.

[0031] In a preferred embodiment, the liquid hydrogen storage tank 1 has a filling port 9 at its upper end and a discharge port 10 at its lower end. Both the filling port 9 and the discharge port 10 are provided with sealing covers. A flow meter 11 and a control valve 12 are provided on the pipeline between the liquid hydrogen storage tank 1 and the pump 4.

[0032] In a preferred embodiment, the preheating feeding section 5 includes a conveying plate 501, with a preheating plate 502 disposed on the outer side of the conveying plate 501. One end of the preheating plate 502 is connected to the hydrogen outlet 7 via pipe three, and the other end of the preheating plate 502 is connected to the input end of the hydrogen purifier 8 via pipe four. One end of the conveying plate 501 is connected to the output end of the pump 4 via pipe two, and one end of the conveying plate 501 is connected to the feed end of the dehydrogenation reactor 6 via pipe five. Both the conveying plate 501 and the preheating plate 502 are arranged in a serpentine structure. A support plate 503 is fixedly installed on the inner side wall of the bottom end of the preheating plate 502. An installation groove 504 is opened on one side wall of the support plate 503. A float 505 is movably placed inside the installation groove 504. A counterweight 506 is provided at the lower end of the float 505. A piston rod 507 is fixedly installed at the bottom end of the counterweight 506. A pull rope 508 is provided at the bottom end of the piston rod 507. One end of the 8 passes through the side wall of the preheating plate 502 and is connected to a pressing block 509. A button 510 is provided below the pressing block 509. The button 510 is mounted on an L-shaped support frame 511. A limit slider 512 is fixedly provided on one side wall of the pressing block 509. A limit groove 513 is formed on one side wall of the L-shaped support frame 511, and the limit slider 512 is slidably disposed in the limit groove 513. The support plate 503 inside the preheating plate 502 is located near the drawer. At one end of the feed pump 4, and at multiple bottom positions of the preheating plate 502, there are drain ports. Each drain port is equipped with a drain pipe 514, and the bottom ends of multiple drain pipes 514 are connected to the same recovery pipe 515. One end of the recovery pipe 515 is connected to a recovery tank 516. Each drain pipe 514 is equipped with a solenoid valve 517. The drain ports at the bottom of the dehydrogenation reactor 6 are connected to the recovery tank 516 via a pipe, and a liquid level sensor is installed inside the recovery tank 516.

[0033] Specifically, the high-temperature hydrogen produced by the dehydrogenation reactor 6 enters the preheating plate 502 in the preheating feeding section 5 through pipe three. As the high-temperature hydrogen flows inside the preheating plate 502, it continuously impacts the outer wall of the conveying plate 501 and the inner wall of the preheating plate 502. The hydrogen-poor LOHC liquid in the high-temperature hydrogen adheres to the wall surface due to inertia and then converges at the bottom of the preheating plate 502. Furthermore, the high-temperature hydrogen can heat the conveying plate 501, preheating the liquid hydrogen inside it. As the hydrogen accumulates at the bottom of the preheating plate 502... As the liquid level rises, the float 505 moves upward under the buoyancy of the water, which in turn moves the counterweight 506 and piston rod 507 upward. The piston rod 507 pulls the pressing block 509 via the pull rope 508. When the liquid inside the preheating plate 502 reaches a certain height, the pressing block 509 separates from the button 510. At this time, the system controller stops the pump 4 and the dehydrogenation reactor 6, and opens the solenoid valve 517 on the drain pipe 514 at the bottom of the preheating plate 502. The collected liquid is then discharged into the recovery tank 516 through the recovery pipe 515.

[0034] The working principle of this invention is as follows:

[0035] Liquid hydrogen storage tank 1 stores liquid hydrogen. When dehydrogenation and hydrogen supply are required, the control valve 12 at one end of the pump 4 is opened. The pump 4 draws the liquid hydrogen from the storage tank 1 to the conveyor plate 501 in the preheating feed section 5, and then into the dehydrogenation reactor 6 for dehydrogenation treatment. The hydrogen obtained from the dehydrogenation treatment enters the preheating plate 502 in the preheating feed section 5 through the pipe 3. As the high-temperature hydrogen flows inside the preheating plate 502, it continuously impacts the outer wall of the conveyor plate 501 and the inner wall of the preheating plate 502. The hydrogen-deficient LOHC liquid in the high-temperature hydrogen adheres to the wall surface under inertia and then converges to the bottom of the preheating plate 502. Moreover, the high-temperature hydrogen can heat the conveyor plate 501 and preheat the liquid hydrogen inside the conveyor plate 501. As the liquid hydrogen converges at the bottom of the preheating plate 502, the high-temperature hydrogen also contributes to the dehydrogenation process. As the liquid level rises, the float 505 moves upward under the buoyancy of the water, thereby driving the counterweight 506 and piston rod 507 to move upward. The piston rod 507 pulls the pressing block 509 through the pull rope 508. When the liquid inside the preheating plate 502 reaches a certain height, the pressing block 509 separates from the button 510. At this time, the controller equipped with the system controls the pump 4 and the dehydrogenation reactor 6 to stop operating, and the solenoid valve 517 on the drain pipe 514 at the bottom of the preheating plate 502 is opened. The collected liquid is discharged into the recovery tank 516 through the recovery pipe 515. The hydrogen gas after gas-liquid separation by the preheating plate 502 enters the hydrogen purifier 8. The hydrogen purifier 8 uses pressure swing adsorption to purify the hydrogen gas. The purified hydrogen gas enters the hydrogen supply tank 2 for standby. The hydrogen gas in the hydrogen supply tank 2 is transferred to the hydrogen-using equipment for use.

[0036] Example 2:

[0037] Please see Figure 1 and Figure 6 The dehydrogenation reactor 6 has multiple catalyst plates 601 inside, each catalyst plate 601 having a cavity filled with catalyst 602. Each catalyst plate 601 has a through hole 603 communicating with the cavity. A filter screen 604 is located below the catalyst plates 601 inside the dehydrogenation reactor 6, inside a support frame 605. Connecting rods 606 are fixedly mounted on both sides of the upper end of the support frame 605, with the upper ends of the connecting rods 606 fixedly mounted at the bottom end of the catalyst plates 601. A movable cover is threadedly sealed at the top of the dehydrogenation reactor 6. 607. A drive motor 608 is fixedly installed at the middle of the top of the movable cover 607. The output shaft of the drive motor 608 is fixedly connected to a rotating shaft 609 inside the dehydrogenation reactor 6. The rotating shaft 609 passes through the catalyst plate 601, and a stirring rod is installed on the side wall inside the catalyst plate 601 on the rotating shaft 609. The catalyst plate 601 and the support frame 605 are both movably connected to the inner side wall of the dehydrogenation reactor 6, and sealing gaskets are installed on the outer side walls of the catalyst plate 601 and the support frame 605. Multiple electric heaters 610 are embedded in the inner side wall of the dehydrogenation reactor 6.

[0038] The working principle of this invention is as follows:

[0039] When dehydrogenating liquid hydrogen using dehydrogenation reactor 6, the preheated liquid hydrogen enters the dehydrogenation reactor 6. The drive motor 608 and electric heater 610 are turned on. The liquid hydrogen passes through multiple catalyst plates 601. The liquid hydrogen comes into contact with the catalyst 602 inside the catalyst plates 601 and undergoes dehydrogenation under high temperature. During the dehydrogenation process, the drive motor 608 drives the rotating shaft 609 and the stirring rod to rotate, so that the stirring rod stirs the catalyst 602, allowing the catalyst 602 to better contact with the liquid hydrogen. If any catalyst 602 leaks out from the penetration hole 603, the filter screen 604 can filter the leaked catalyst particles. The dehydrogenated hydrogen gas is discharged from the hydrogen outlet 7. The dehydrogenated liquid is discharged into the recovery tank 516. The liquid level sensor in the recovery tank 516 monitors the liquid volume in real time. When a certain amount is reached, the liquid pump is used to introduce the liquid in the recovery tank 516 into the liquid hydrogen storage tank 1 for reuse.

[0040] When the catalyst needs to be replaced or the filter screen needs to be cleaned, the movable cover 607 at the top of the dehydrogenation reactor 6 is unscrewed. The movable cover 607 is used to move multiple catalyst plates 601 and support frame 605 out of the dehydrogenation reactor 6. Specifically, the rotating shaft 609 is connected to the catalyst plate 601 by bearing rotation, so the rotating shaft 609 can be used to move the catalyst plate 601.

[0041] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An organic liquid hydrogen storage and supply device with dehydrogenation function, comprising a liquid hydrogen storage tank (1) and a hydrogen supply tank (2), characterized in that: The bottom end of the liquid hydrogen storage tank (1) is connected to the input end of the pump (4) through a pipe 1. The output end of the pump (4) is connected to the preheating feed section (5) through a pipe 2. One end of the preheating feed section (5) is connected to the feed end of the dehydrogenation reactor (6). The upper end of the dehydrogenation reactor (6) is provided with a hydrogen outlet (7). The hydrogen outlet (7) is connected to the preheating feed section (5) through a pipe 3. The other end of the preheating feed section (5) is connected to a hydrogen purifier (8) through a pipe 4. The output end of the hydrogen purifier (8) is connected to the hydrogen supply tank (2). The hydrogen supply tank (2) is connected to the hydrogen user end through a hydrogen supply pipe. The preheating feeding section (5) includes a conveying plate (501), and a preheating plate (502) is provided on the outside of the conveying plate (501). One end of the preheating plate (502) is connected to the hydrogen outlet (7) through pipe three, and the other end of the preheating plate (502) is connected to the input end of the hydrogen purifier (8) through pipe four. One end of the conveying plate (501) is connected to the output end of the pump (4) through pipe two, and the other end of the conveying plate (501) is connected to the feed end of the dehydrogenation reactor (6) through pipe five. Both the conveying plate (501) and the preheating plate (502) are arranged in a serpentine structure. A support plate (503) is fixedly installed on the inner side wall of the bottom end of the preheating plate (502). An installation groove (504) is opened on one side wall of the support plate (503). A float (505) is movably placed inside the installation groove (504). A counterweight (506) is provided at the lower end of the float (505). A piston rod (507) is fixedly installed at the bottom end of the counterweight (506). A pull rope (508) is provided at the bottom end of the piston rod (507). One end of the pull rope (508) passes through the side wall of the preheating plate (502) and is connected to a pressing block (509). A button (510) is provided below the pressing block (509).

2. The organic liquid hydrogen storage and supply device with dehydrogenation function according to claim 1, characterized in that: The liquid hydrogen storage tank (1) has a filling port (9) at the top and a discharge port (10) at the bottom. Both the filling port (9) and the discharge port (10) are equipped with sealing covers. A flow meter (11) and a control valve (12) are installed on the pipeline between the liquid hydrogen storage tank (1) and the pump (4).

3. The organic liquid hydrogen storage and supply device with dehydrogenation function according to claim 1, characterized in that: The button (510) is mounted on an L-shaped support frame (511). A limit slider (512) is fixedly mounted on one side wall of the pressing block (509). A limit groove (513) is opened on one side wall of the L-shaped support frame (511), and the limit slider (512) is slidably mounted in the limit groove (513).

4. The organic liquid hydrogen storage and supply device with dehydrogenation function according to claim 3, characterized in that: The support plate (503) inside the preheating plate (502) is located at one end close to the pump (4). Multiple bottom positions of the preheating plate (502) are provided with drain ports, and drain pipes (514) are provided at the drain ports. The bottom ends of multiple drain pipes (514) are connected to the same recovery pipe (515).

5. An organic liquid hydrogen storage and supply device with dehydrogenation function according to claim 4, characterized in that: One end of the recovery pipe (515) is connected to the recovery tank (516), and each of the drain pipes (514) is equipped with a solenoid valve (517). The drain port at the bottom of the dehydrogenation reactor (6) is connected to the recovery tank (516) through pipe six, and a liquid level sensor is installed inside the recovery tank (516).

6. The organic liquid hydrogen storage and supply device with dehydrogenation function according to claim 1, characterized in that: The dehydrogenation reactor (6) is provided with multiple catalyst plates (601) inside. The catalyst plates (601) have cavities inside and are filled with catalyst (602). The catalyst plates (601) have through holes (603) communicating with the cavities. The dehydrogenation reactor (6) is provided with a filter screen (604) below the catalyst plates (601) inside the catalyst plates (601). The filter screen (604) is located inside the support frame (605). The upper ends of the support frame (605) are fixedly provided with connecting rods (606) on both sides. The upper ends of the connecting rods (606) are fixedly provided at the bottom ends of the catalyst plates (601).

7. An organic liquid hydrogen storage and supply device with dehydrogenation function according to claim 6, characterized in that: The top of the dehydrogenation reactor (6) is threadedly sealed with a movable cover (607). A drive motor (608) is fixedly installed at the middle position of the top of the movable cover (607). The output shaft of the drive motor (608) is fixedly connected to a rotating shaft (609) inside the dehydrogenation reactor (6). The rotating shaft (609) passes through the catalyst plate (601), and a stirring rod is installed on the side wall inside the catalyst plate (601) on the rotating shaft (609).

8. An organic liquid hydrogen storage and supply device with dehydrogenation function according to claim 7, characterized in that: The catalyst plate (601) and the support frame (605) are both movably connected to the inner wall of the dehydrogenation reactor (6), and sealing gaskets are provided on the outer walls of the catalyst plate (601) and the support frame (605). Multiple electric heaters (610) are embedded in the inner wall of the dehydrogenation reactor (6).

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