A solid-state hydrogen production device comprising microchannel structures

Abstract

The application discloses a kind of solid-state hydrogen production equipment of microchannel structure, including shell (1), shell (1) is equipped with solid-state hydrogen production stack structure (2), solid-state hydrogen production stack structure (2) lower end is equipped with cold water inlet pipe (4) and hot water inlet pipe (3) respectively, and solid-state hydrogen production stack structure (2) upper end is equipped with gas outlet pipe (6);The solid-state hydrogen production stack structure (2) includes a plurality of hydrogen production module (7) stacked distribution, and the hydrogen production module (7) outside both ends is equipped with end plate (8), and the both ends of two end plates (8) are connected by screw rod (9);The hydrogen production module (7) includes sealing gasket (71), first diamond net (72), magnesium felt (73), second diamond net (74) and microchannel assembly (75) sequentially distributed;Water reacted with solid-state hydrogen production stack structure is further stored in the shell (1), and the pH value of water is 2-5.The application has the characteristics that hydrogen production is simple and convenient.

Description

Technical Field

[0001] This invention relates to a hydrogen production device, and more particularly to a solid-state hydrogen production device containing a microchannel structure. Background Technology

[0002] Hydrogen energy is a clean secondary energy source, and its production is the source and key link in the entire hydrogen energy industry chain. Currently, the mainstream hydrogen production technologies on the market are: fossil fuel hydrogen production (such as reacting natural gas (mainly CH4; under high temperature (700-1100℃) and catalyst action, reacting coal with oxygen and steam to convert it into syngas mainly containing H2 and CO, then obtaining hydrogen through water-gas shift reaction and gas separation purification) with steam to produce hydrogen and carbon monoxide, the latter further reacting with steam to produce more hydrogen) and water electrolysis hydrogen production (using electricity to decompose water (H2O) into hydrogen (H2) and oxygen (O2)). These hydrogen production methods require a lot of equipment and have complex processes, resulting in a relatively complex overall hydrogen production process. Therefore, there is an urgent need to develop a simple and convenient hydrogen production device to meet the usage requirements. Summary of the Invention

[0003] The purpose of this invention is to provide a solid-state hydrogen production device containing a microchannel structure. This invention features simple and convenient hydrogen production.

[0004] The technical solution of the present invention: A solid hydrogen production device containing a microchannel structure includes a shell, a solid hydrogen production stack structure is provided inside the shell, a cold water inlet pipe and a hot water inlet pipe are respectively provided at the lower end of the solid hydrogen production stack structure, and a gas outlet pipe is provided at the upper end of the solid hydrogen production stack structure; the solid hydrogen production stack structure includes multiple hydrogen production modules stacked vertically, and end plates are provided on the outside of the hydrogen production modules at both ends, and the two ends of the two end plates are connected by screws.

[0005] The hydrogen production module includes a sealing gasket, a first diamond mesh, a magnesium felt, a second diamond mesh, and a microchannel assembly arranged in sequence.

[0006] The shell also stores water that reacts with the solid hydrogen production stack structure, and the water has a pH value of 2-5.

[0007] In the aforementioned solid-state hydrogen production device containing a microchannel structure, the magnesium felt is made of magnesium fibers and has a porosity of 50-60%.

[0008] In the aforementioned solid-state hydrogen production device containing a microchannel structure, the water inside the shell contains citric acid and oxalic acid.

[0009] In the aforementioned solid-state hydrogen production device containing a microchannel structure, the microchannel assembly includes two microchannel plates connected back to back; the front of the microchannel plate has a groove in the middle, and the upper and lower ends of the groove have liquid inlet and liquid outlet respectively; the back of the microchannel plate has multiple loop-shaped channels, and the two ends of the loop-shaped channels have inlet and outlet respectively.

[0010] In the aforementioned solid-state hydrogen production device containing a microchannel structure, a sealing plate is provided on the inner side of the end plate.

[0011] In the aforementioned solid-state hydrogen production device containing a microchannel structure, a side plate is provided on the inner side of the sealing plate.

[0012] In the aforementioned solid-state hydrogen production device containing a microchannel structure, the lower end plate is provided with a liquid inlet hole connected to a cold water inlet pipe and a hot water inlet pipe; the upper end plate is also provided with a gas outlet hole connected to a gas outlet pipe.

[0013] In the aforementioned solid-state hydrogen production device containing a microchannel structure, the screw end is provided with a spring washer and a nut.

[0014] In the aforementioned solid-state hydrogen production device containing a microchannel structure, the first and second rhomboid meshes are made of nickel-plated metal or platinum-plated metal.

[0015] Compared with existing technologies, this invention consists of a shell, water, and a solid hydrogen production stack structure with magnesium felt, controlling the pH value of the water between 2 and 5. Hydrogen production is achieved by reacting acidic water with the magnesium felt, resulting in a simple structure and convenient hydrogen production. Furthermore, the solid hydrogen production stack structure of this application comprises multiple stacked hydrogen production modules. Each module consists of a sealing gasket, a diamond-shaped mesh, magnesium felt, and microchannel components, allowing for better temperature control within the shell and enabling hydrogen production to proceed at lower temperatures. Additionally, the magnesium felt is made of magnesium fiber, and controlling its porosity to 50-60% increases the specific surface area, effectively improving hydrogen production efficiency. In summary, this invention offers the advantages of simple and convenient hydrogen production. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a front view of the microchannel plate;

[0018] Figure 3 This is a rear view of the microchannel plate.

[0019] The labels in the attached diagram are as follows: 1-Shell, 2-Solid hydrogen production stack structure, 4-Cold water inlet pipe, 3-Hot water inlet pipe, 6-Outlet pipe, 7-Hydrogen production module, 8-End plate, 9-Screw, 71-Sealing gasket, 72-First diamond mesh, 73-Magnesium felt, 74-Second diamond mesh, 75-Microchannel assembly, 751-Microchannel plate, 752-Groove, 753-Liquid inlet, 754-Liquid outlet, 755-U-shaped channel, 756-Inlet, 757-Outlet, 10-Sealing plate, 11-Side plate, 12-Spring washer, 5-Nut. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0021] Example. A solid-state hydrogen production device containing a microchannel structure, configured as follows: Figure 1 As shown, it includes a shell 1, inside which is a solid hydrogen production stack structure 2. The lower end of the solid hydrogen production stack structure 2 is provided with a cold water inlet pipe 4 and a hot water inlet pipe 3, and the upper end of the solid hydrogen production stack structure 2 is provided with a gas outlet pipe 6. The solid hydrogen production stack structure 2 includes multiple hydrogen production modules 7 stacked vertically. The hydrogen production modules 7 at both ends are provided with end plates 8, and the two ends of the two end plates 8 are connected by screws 9.

[0022] The hydrogen production module 7 includes a sealing gasket 71, a first diamond mesh 72, a magnesium felt 73, a second diamond mesh 74, and a microchannel assembly 75 arranged in sequence.

[0023] The shell 1 also stores water that reacts with the solid hydrogen production stack structure, and the pH value of the water is 2-5.

[0024] Magnesium felt 73 is made of magnesium fibers and has a porosity of 50-60%.

[0025] The water inside the shell 1 contains citric acid and oxalic acid.

[0026] The microchannel assembly 75 includes two microchannel plates 751 connected back to back; the front of the microchannel plate 751 has a groove 752 in the middle, and the upper and lower ends of the groove 752 are respectively provided with an inlet 753 and an outlet 754; the back of the microchannel plate 751 is provided with multiple loop channels 755, and the two ends of the loop channels 755 are respectively provided with an inlet 756 and an outlet 757.

[0027] A sealing plate 10 is provided on the inner side of the end plate 8.

[0028] A side plate 11 is provided on the inner side of the sealing plate 10.

[0029] The lower end plate 8 is provided with a liquid inlet hole connected to the cold water inlet pipe 4 and the hot water inlet pipe 3; the upper end plate 8 is also provided with a vent hole connected to the vent pipe 6.

[0030] The screw 9 is provided with a spring washer 12 and a nut 5 at its end.

[0031] The first and second rhombus meshes are made of nickel-plated or platinum-plated metal.

[0032] This application increases the contact area and heat exchange efficiency by adding microchannel components, thereby reducing the temperature of hydrogen production.

[0033] The installation process of this invention is as follows: Several hydrogen production modules are installed between two end plates. Then, the hydrogen production modules are connected and fixed together with the sealing plate, side plate and end plate by screws, spring washers and nuts to form a solid hydrogen production stack structure. Then, gas outlet pipes are respectively set on the top of the solid hydrogen production stack structure (and connected to the corresponding pipe openings to the shell). Hot water inlet pipes and cold water inlet pipes (connected to the shell through pipe openings) are set on the bottom of the solid hydrogen production stack structure, thereby completing the installation of the solid hydrogen production equipment.

[0034] During hydrogen production, room temperature water with a pH of 2-5 is introduced into the shell through the cold water inlet pipe, where it reacts with the magnesium felt to produce hydrogen gas and magnesium hydroxide. The hydrogen gas exits from the exhaust port and enters the subsequent hydrogen storage system for storage or direct use.

[0035] Injecting hot water can raise the reaction temperature and accelerate the reaction, thus speeding up hydrogen production.

Claims

1. A solid state hydrogen generation apparatus comprising a microchannel structure, characterized by: The device includes a shell (1), a solid hydrogen production stack structure (2) is provided inside the shell (1), a cold water inlet pipe (4) and a hot water inlet pipe (3) are respectively provided at the lower end of the solid hydrogen production stack structure (2), and a gas outlet pipe (6) is provided at the upper end of the solid hydrogen production stack structure (2); the solid hydrogen production stack structure (2) includes multiple hydrogen production modules (7) stacked vertically, and end plates (8) are provided outside the hydrogen production modules (7) at both ends, and the two ends of the two end plates (8) are connected by screws (9); The hydrogen production module (7) includes a sealing gasket (71), a first diamond mesh (72), a magnesium felt (73), a second diamond mesh (74), and a microchannel assembly (75) arranged in sequence. The shell (1) also stores water that reacts with the solid hydrogen production stack structure, and the pH value of the water is 2-5; Magnesium felt (73) is made of magnesium fibers and has a porosity of 50-60%. The microchannel assembly (75) includes two microchannel plates (751) connected back to back; a groove (752) is provided in the middle of the front side of the microchannel plate (751), and an inlet (753) and an outlet (754) are provided at the upper and lower ends of the groove (752), respectively; multiple loop channels (755) are provided on the back side of the microchannel plate (751), and an inlet (756) and an outlet (757) are provided at both ends of the loop channels (755); The lower end plate (8) is provided with an inlet hole connected to the cold water inlet pipe (4) and the hot water inlet pipe (3); the upper end plate (8) is also provided with an air hole connected to the air outlet pipe (6). The screw (9) is provided with a spring washer (12) and a nut (5) at its end.

2. The solid-state hydrogen production device containing a microchannel structure according to claim 1, characterized in that: The water inside the shell (1) contains citric acid and oxalic acid.

3. The solid-state hydrogen production device containing a microchannel structure according to claim 1, characterized in that: A sealing plate (10) is provided on the inner side of the end plate (8).

4. A solid-state hydrogen production device containing a microchannel structure according to claim 1, characterized in that: A side plate (11) is provided on the inner side of the sealing plate (10).

5. A solid-state hydrogen production device containing a microchannel structure according to claim 1, characterized in that: The first and second rhombus meshes are made of nickel-plated or platinum-plated metal.

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