Hydrogen supply device combining methanol hydrogen production and solid hydrogen storage

Abstract

The utility model provides a kind of hydrogen supply device of methanol hydrogen production and solid-state hydrogen storage, belong to the technical field of hydrogen production equipment, a kind of hydrogen supply device of methanol hydrogen production and solid-state hydrogen storage including methanol hydrogen production unit, the methanol hydrogen production unit is connected with range extender, the side of the methanol hydrogen production unit is equipped with the solid-state hydrogen storage unit connected with range extender, heat exchange component is connected between the methanol hydrogen production unit with the solid-state hydrogen storage unit, the heat exchange component is used to conduct the heat generated by the methanol hydrogen production unit to the solid-state hydrogen storage unit place.This application can supply the hydrogen required by range extender.

Description

Technical Field

[0001] This utility model belongs to the technical field of hydrogen production equipment, specifically relating to a combined hydrogen supply device for methanol-to-hydrogen and solid-state hydrogen storage. Background Technology

[0002] Existing range extenders use diesel engines or natural gas / methanol engines as power sources to drive generators to produce electricity.

[0003] The emerging new energy technology is the hydrogen internal combustion engine range extender, which relies on high-pressure hydrogen storage tanks or liquid hydrogen for hydrogen supply, but it suffers from problems such as high storage and transportation costs and low safety.

[0004] Methanol reforming technology for hydrogen production is mature, but its dynamic response is slow, making it difficult to match the transient power requirements of hydrogen internal combustion engine range extenders.

[0005] While solid-state hydrogen storage materials (such as metal hydrides and porous materials) offer high safety, their hydrogen absorption / desorption rates are limited by temperature, making it difficult to meet continuous hydrogen supply demands. Therefore, there is an urgent need for a hydrogen production device capable of meeting the current hydrogen requirements of range extenders. Utility Model Content

[0006] This utility model provides a combined methanol-to-hydrogen and solid-state hydrogen storage hydrogen supply device, which aims to solve the technical problem that existing hydrogen production devices cannot meet the hydrogen requirements of range extenders.

[0007] In a first aspect, this utility model provides a combined methanol-to-hydrogen and solid-state hydrogen storage hydrogen supply device, including a methanol-to-hydrogen unit connected to a range extender, a solid-state hydrogen storage unit connected to the range extender on one side of the methanol-to-hydrogen unit, and a heat exchange component connected between the methanol-to-hydrogen unit and the solid-state hydrogen storage unit, the heat exchange component being used to conduct the heat generated by the methanol-to-hydrogen unit to the solid-state hydrogen storage unit.

[0008] In conjunction with the first aspect, in one possible implementation, the methanol-to-hydrogen unit includes a methanol solution tank, one side of which is connected to a buffer tank, and one side of which is connected to a reforming hydrogen generator.

[0009] In conjunction with the first aspect, in one possible implementation, the heat exchange assembly includes a heat exchange tube sleeved outside the reforming hydrogen generator, the heat exchange tube being connected to the solid-state hydrogen storage unit.

[0010] In conjunction with the first aspect, in one possible implementation, the solid-state hydrogen storage unit includes multiple hydrogen storage tanks, the heat exchange assembly includes a heat exchange box located on the multiple hydrogen storage tanks, the heat exchange box has a liquid storage tank inside, the liquid storage tank is in contact with the multiple hydrogen storage tanks, the heat exchange tube is located inside the liquid storage tank and the liquid storage tank contains water in contact with the heat exchange tube.

[0011] In conjunction with the first aspect, in one possible implementation, the liquid storage tank is equipped with baffles inside, which agitate the water inside the liquid storage tank by rotating.

[0012] In conjunction with the first aspect, in one possible implementation, the top wall of the liquid storage tank and the top wall of the heat exchange tank are spaced apart, and a squeezing plate is provided between the top wall of the liquid storage tank and the top wall of the heat exchange tank. The squeezing plate is used to drive the liquid storage tank to move towards the hydrogen storage tank.

[0013] In conjunction with the first aspect, in one possible implementation, a turbulence screw is fixedly connected to the upper side of the turbulence blade, a turbulence block is threaded onto the external side of the turbulence screw, and a pressing push rod for driving the turbulence screw to move is rotatably connected to the upper side of the turbulence screw. The pressing push rod is also connected to the pressing plate and drives the pressing plate to move.

[0014] In conjunction with the first aspect, in one possible implementation, the extrusion plate is connected to a turbulence-inducing component, which is connected to each of the hydrogen storage tanks and is used to agitate the gas inside the hydrogen storage tank.

[0015] In conjunction with the first aspect, in one possible implementation, the turbulence assembly includes a drive rod inserted into the interior of each of the hydrogen storage tanks, each drive rod being rotatably connected to a turbulence plate, and each turbulence plate being rotatably connected to an adjacent hydrogen storage tank at a position away from the connected drive rod.

[0016] In conjunction with the first aspect, in one possible implementation, each of the hydrogen storage tanks is fixedly connected with a plurality of spaced-apart baffles, each of the hydrogen storage tanks is provided with a hydrogen storage block, and each of the hydrogen storage blocks is located on the side of the adjacent baffle away from the inner wall of the hydrogen storage tank.

[0017] The methanol-to-hydrogen and solid-state hydrogen storage combined hydrogen supply device provided by this utility model, compared with the prior art: By connecting the methanol-to-hydrogen unit and the solid-state hydrogen storage unit through a heat exchange component, the heat generated by the methanol-to-hydrogen unit can be transferred to the solid-state hydrogen storage unit to supply the heat required by the solid-state hydrogen storage unit, thereby achieving a sufficient supply of hydrogen required by the range extender.

[0018] By setting up baffles, extrusion plates, and baffle components, it is possible to fully heat the internal hydrogen storage tanks of multiple hydrogen storage tanks, thereby enabling the hydrogen storage tanks to release hydrogen fully and evenly to supply the range extender application. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application; Figure 2 This is a cross-sectional view of the heat exchange component in Embodiment 2 of this application; Figure 3 This is a cross-sectional view of the disturbance component in Embodiment 2 of this application; Explanation of reference numerals in the attached drawings: 1. Methanol to hydrogen unit; 11. Methanol solution tank; 12. Buffer tank; 13. Reformer hydrogen generator; 2. Solid hydrogen storage unit; 21. Hydrogen storage tank; 22. Hydrogen storage block; 3. Range extender; 4. Heat exchange assembly; 41. Heat exchange tube; 42. Heat exchange box; 43. Liquid storage tank; 44. Baffle blade; 441. Baffle screw; 442. Baffle block; 45. Extrusion plate; 46. Extrusion push rod; 5. Gas guide pipe; 6. Electric valve; 7. Pump; 8. Baffle assembly; 81. Drive rod; 82. Bellows sleeve; 83. Baffle; 84. Baffle rib. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] Please refer to the following: Figures 1 to 3 This invention describes the combined methanol-to-hydrogen and solid-state hydrogen storage hydrogen supply device.

[0022] Example 1 A combined methanol-to-hydrogen and solid-state hydrogen storage hydrogen supply device, referring to Figure 1 The system includes a methanol-to-hydrogen unit 1, with a solid-state hydrogen storage unit 2 on one side. The methanol-to-hydrogen unit 1 and the solid-state hydrogen storage unit 2 are connected and both are connected to a range extender 3. A hydrogen internal combustion engine range extender interface is provided between the range extender 3 and both the methanol-to-hydrogen unit 1 and the solid-state hydrogen storage unit 2. This interface includes a multi-stage pressure reducing valve, a temperature regulator, and an internal combustion engine adapter interface. To facilitate the demonstration of the main innovations of this solution, and because the hydrogen internal combustion engine range extender interface is existing technology, it is not shown in detail in the figure. A heat exchange assembly 4 connects the methanol-to-hydrogen unit 1 and the solid-state hydrogen storage unit 2.

[0023] The methanol-to-hydrogen unit 1 includes a methanol solution tank 11, a buffer tank 12 is provided on one side of the methanol solution tank 11, and the methanol solution tank 11 and the buffer tank 12 are connected by a hose. A reforming hydrogen generator 13 is provided on the side of the buffer tank 12 away from the methanol solution tank 11, and the buffer tank 12 and the reforming hydrogen generator 13 are connected by a hose.

[0024] Solid-state hydrogen storage unit 2 includes multiple hydrogen storage tanks 21 arranged in relation to each other. Each hydrogen storage tank 21 is equipped with a solid hydrogen storage block 22 inside. In this embodiment, the corresponding attached... Figure 1 The solid hydrogen storage block 22 is not shown in the figure. Multiple hydrogen storage tanks 21 are interconnected by pipelines.

[0025] A gas delivery pipe 5 connects the reforming hydrogen generator 13 to multiple hydrogen storage tanks 21. An electric valve 6 and a pump 7 are installed on the gas delivery pipe 5.

[0026] The methanol to deionized water ratio is 1:1 (molar ratio) or 64% methanol to 36% deionized water (mass ratio); this molar ratio is used in this embodiment. For ease of control, the methanol steam reforming reaction is conducted at 250-300℃ or 350-400℃; this embodiment uses 250℃-300℃. The internal pressure of the reforming hydrogen generator 13 is set between 1-3.6 MPa. The sulfur content and chlorine content in the feed gas are set to <1 ppm and <1 ppm, respectively.

[0027] Furthermore, the hydrogen storage tank 21 is divided into two groups: a high-temperature zone and a low-temperature zone. The internal temperature of the high-temperature zone hydrogen storage tank 21 is maintained at 80-120 degrees Celsius, while the internal temperature of the low-temperature zone hydrogen storage tank 21 is controlled at 30-50 degrees Celsius. This allows the solid hydrogen storage block 22 inside the high-temperature zone hydrogen storage tank 21 to better release hydrogen, while the solid hydrogen storage block 22 in the low-temperature zone can effectively adsorb and store hydrogen.

[0028] The implementation principle of Embodiment 1 of this application is as follows: In actual use, methanol solution tank 11 supplies methanol to the reforming hydrogen generator 13 through buffer tank 12, and then the reforming hydrogen generator 13 performs hydrogen production. The heat generated during the hydrogen production process is transferred to the interior of multiple hydrogen storage tanks 21 through heat exchange component 4, thereby accelerating the process of hydrogen release from hydrogen storage block 22, and thus enabling hydrogen to be fully delivered to the range extender 3, achieving sufficient hydrogen supply to the range extender 3.

[0029] When the range extender 3 is unable to consume a large amount of hydrogen, the electric valve 6 and the pump body are opened to guide the hydrogen inside the reforming hydrogen generator 13 to the hydrogen storage tank 21 for storage, thereby realizing the hydrogen storage operation.

[0030] Example 2 Reference Figure 2 and Figure 3 The difference between Example 2 and Example 1 is that the heat exchange assembly 4 includes a heat exchange tube 41 wound around the outside of the reforming hydrogen generator 13, and the heat exchange tube 41 is filled with water. A common heat exchange box 42 is provided on the upper side of multiple hydrogen storage tanks 21, and the lower side wall of the heat exchange box 42 abuts against the top wall of the multiple hydrogen storage tanks 21. The heat exchange tube 41 penetrates into the interior of the heat exchange box 42 and is uniformly wound at the center of the interior of the heat exchange box 42.

[0031] The heat exchange box 42 has a liquid storage tank 43 in the middle for accommodating the heat exchange tube 41. The liquid storage tank 43 contains a liquid for heat exchange with the heat exchange tube 41. In this embodiment, the liquid is water. The lower side wall of the liquid storage tank 43 is arranged to overlap with the lower side wall of the heat exchange box 42 and the lower side wall of the liquid storage tank 43 is evenly in contact with the upper side wall of the multiple hydrogen storage tanks 21.

[0032] The liquid storage tank 43 is equipped with a baffle vane 44. The baffle vane 44 is horizontally arranged, and a baffle screw 441 is fixedly connected to the upper side of the middle position of the baffle vane 44. The baffle screw 441 is vertically arranged, and its upper end slides through the liquid storage tank 43 in the vertical direction. A groove is formed at the position where the baffle screw 441 passes through the upper end of the liquid storage tank 43, and a baffle block 442 is provided inside the groove. The upper end of the baffle screw 441 passes through the baffle block 442 and is threadedly connected to the baffle block 442.

[0033] The upper end of the turbulence screw 441 is rotatably connected to a horizontally arranged extrusion plate 45. A cavity exists between the top wall of the liquid storage tank 43 and the top wall of the heat exchange box 42 for the extrusion plate 45 to move vertically. The side wall of the extrusion plate 45 slides vertically against the inner wall of the adjacent heat exchange box 42. Each side wall of the liquid storage tank 43 is spaced apart from the inner wall of the adjacent heat exchange box 42.

[0034] The heat exchange box 42 is provided with an extrusion push rod 46 on the upper side. The piston rod of the extrusion push rod 46 passes through the top wall of the heat exchange box 42 and is fixedly connected to the extrusion plate 45.

[0035] In actual use, the heat generated by the reforming hydrogen generator 13 is transferred to the interior of the storage tank 43 through the heat exchange tube 41. Then, the extrusion pusher 46 drives the extrusion plate 45 to move up and down. As the extrusion plate 45 moves downwards, it moves the heat in the cavity between the storage tank 43 and the heat exchange box 42 towards the hydrogen storage tank 21. Furthermore, the extrusion plate 45 rotates the turbulence screw 441, which in turn rotates the turbulence blades 44. The rotation of the turbulence blades 44 causes the water inside the storage tank 43 to rotate, resulting in more uniform heating of the water inside the storage tank 43, thus achieving a uniform heating process for the multiple hydrogen storage tanks 21.

[0036] Each hydrogen storage tank 21 is connected to a flow disturbance component 8, which is used to disturb the hot gas inside the hydrogen storage tank 21, thereby achieving uniform heating of the hydrogen storage block 22 inside the hydrogen storage tank 21.

[0037] The turbulence assembly 8 includes a drive rod 81 inserted vertically into the interior of each hydrogen storage tank 21, with the upper end of each drive rod 81 fixedly connected to an adjacent extrusion plate 45. Each hydrogen storage tank 21 is equipped with a bellows sleeve 82, which is fixedly connected to and wraps around the adjacent drive rod 81. The upper sidewall of each bellows sleeve 82 is fixedly connected to the inner top wall of the hydrogen storage tank 21, thereby separating the drive rod 81 from the inner wall of the hydrogen storage tank 21.

[0038] Each accordion sleeve 82 is provided with a spoiler 83 on its lower side. In this embodiment, each spoiler 83 is configured as a butterfly shape, and one end of each spoiler 83 is fixedly connected to the lower side wall of the accordion sleeve 82. The middle position of each spoiler 83 is rotatably connected to the inner top wall of the adjacent hydrogen storage tank 21 through a connecting rod.

[0039] Multiple sidewalls and bottomwalls of each hydrogen storage tank 21 are fixedly connected to multiple baffles 84 that are spaced apart from each other. The hydrogen storage block 22 inside each hydrogen storage tank 21 abuts against the sidewall of the adjacent baffle 84 away from the inner wall of the hydrogen storage tank 21.

[0040] During use, the extrusion plate 45 moves up and down, driving the drive rod 81 to move up and down as well. The drive rod 81, in turn, rotates the bellows sleeve 82 and the baffle 83. The baffle 83, in turn, moves the hot gas inside the hydrogen storage tank 21, thus achieving multi-directional heating of the hydrogen storage block 22. Furthermore, the presence of the baffle ribs 84 enables multi-angle heating of the hydrogen storage block 22.

[0041] The implementation principle of Embodiment 2 of this application is as follows: During the process of producing hydrogen and generating heat in the reforming hydrogen generator 13, the heat exchange tube 41 conducts heat to the inside of the storage tank 43, and through the extrusion plate 45 and the baffle blades, the heating operation of each hydrogen storage tank 21 can be fully achieved.

[0042] During the heating process, the baffle plate 83 and the baffle rib plate 84 are used to achieve a full heating process for the hydrogen storage block 22 inside each hydrogen storage tank 21.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A combined methanol-to-hydrogen and solid-state hydrogen storage hydrogen supply device, characterized in that, The system includes a methanol-to-hydrogen unit (1) connected to a range extender (3). A solid hydrogen storage unit (2) connected to the range extender (3) is provided on one side of the methanol-to-hydrogen unit (1). A heat exchange component (4) is connected between the methanol-to-hydrogen unit (1) and the solid hydrogen storage unit (2). The heat exchange component (4) is used to conduct the heat generated by the methanol-to-hydrogen unit (1) to the solid hydrogen storage unit (2).

2. The methanol-to-hydrogen and solid-state hydrogen storage combined hydrogen supply device as described in claim 1, characterized in that, The methanol-to-hydrogen unit (1) includes a methanol solution tank (11), one side of which is connected to a buffer tank (12), and one side of which is connected to a reforming hydrogen generator (13).

3. The methanol-to-hydrogen and solid-state hydrogen storage combined hydrogen supply device as described in claim 2, characterized in that, The heat exchange assembly (4) includes a heat exchange tube (41) sleeved outside the reforming hydrogen generator (13), and the heat exchange tube (41) is connected to the solid hydrogen storage unit (2).

4. The methanol-to-hydrogen and solid-state hydrogen storage combined hydrogen supply device as described in claim 3, characterized in that, The solid hydrogen storage unit (2) includes multiple hydrogen storage tanks (21), and the heat exchange assembly (4) includes a heat exchange box (42) located on the multiple hydrogen storage tanks (21). The heat exchange box (42) is provided with a liquid storage tank (43) inside. The liquid storage tank (43) is in contact with the multiple hydrogen storage tanks (21). The heat exchange tube (41) is located inside the liquid storage tank (43) and the liquid storage tank (43) is provided with water in contact with the heat exchange tube (41).

5. The methanol-to-hydrogen and solid-state hydrogen storage combined hydrogen supply device as described in claim 4, characterized in that, The liquid storage tank (43) is equipped with a baffle blade (44) inside, which stirs the water inside the liquid storage tank (43) by rotating.

6. The methanol-to-hydrogen and solid-state hydrogen storage combined hydrogen supply device as described in claim 5, characterized in that, The top wall of the liquid storage tank (43) is spaced apart from the top wall of the heat exchange tank (42), and an extrusion plate (45) is provided between the top wall of the liquid storage tank (43) and the top wall of the heat exchange tank (42). The extrusion plate (45) is used to drive the liquid storage tank (43) to dissipate heat and move towards the hydrogen storage tank (21).

7. The methanol-to-hydrogen and solid-state hydrogen storage combined hydrogen supply device as described in claim 6, characterized in that, A turbulence screw (441) is fixedly connected to the upper side of the turbulence blade (44). A turbulence block (442) is threaded onto the outside of the turbulence screw (441). A pressing push rod (46) for driving the turbulence screw (441) to move is rotatably connected to the upper side of the turbulence screw (441). The pressing push rod (46) is also connected to the pressing plate (45) and drives the pressing plate (45) to move.

8. The methanol-to-hydrogen and solid-state hydrogen storage combined hydrogen supply device as described in any one of claims 6 or 7, characterized in that, The extrusion plate (45) is connected to a turbulence-inducing component (8), which is connected to each of the hydrogen storage tanks (21) and is used to turbulent the gas inside the hydrogen storage tank (21).

9. The methanol-to-hydrogen and solid-state hydrogen storage combined hydrogen supply device as described in claim 8, characterized in that, The turbulence assembly (8) includes a drive rod (81) inserted into the interior of each of the hydrogen storage tanks (21), each of the drive rods (81) is rotatably connected to a turbulence plate (83), and each of the turbulence plates (83) is rotatably connected to the adjacent hydrogen storage tank (21) at a position away from the connected drive rod (81).

10. The methanol-to-hydrogen and solid-state hydrogen storage combined hydrogen supply device as described in claim 9, characterized in that, Each of the hydrogen storage tanks (21) is fixedly connected with a plurality of spaced-apart baffles (84), and each of the hydrogen storage tanks (21) is provided with a hydrogen storage block (22), and each of the hydrogen storage blocks (22) is located on the side of the adjacent baffle (84) away from the inner wall of the hydrogen storage tank (21).

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