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A hydrogen production method and device using magnesium hydride as a hydrogen storage material

A technology for a hydrogen production device and a hydrogen storage material, applied in the field of hydrogen production, can solve problems such as damage or combustion, damage to the life of the fuel cell, and influence on the quality of hydrogen

Active Publication Date: 2021-09-10
武汉市能智达科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydrolysis of magnesium hydride is an exothermic reaction, and the temperature in the reaction chamber will be higher than 600°C in the middle and late stages of the reaction. Porous materials such as glass filter materials and carbon cloth cannot withstand high temperatures, and will be damaged or burned, releasing impurity gases such as carbon monoxide, affecting hydrogen. Quality impairs fuel cell life

Method used

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  • A hydrogen production method and device using magnesium hydride as a hydrogen storage material
  • A hydrogen production method and device using magnesium hydride as a hydrogen storage material
  • A hydrogen production method and device using magnesium hydride as a hydrogen storage material

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Embodiment 1

[0035] refer to figure 1, In an embodiment of the present invention, a hydrogen production device using magnesium hydride as a hydrogen storage material includes a water tank 1 , a water pump 2 , a steam generator 3 , and a reaction chamber 4 . The water tank 1 is connected to the water pump 2 through a pipeline, and the water pump 2 is connected to the reaction chamber 4 through a pipeline. The pipeline between the water pump 2 and the reaction chamber 4 is provided with a steam generator 3, and the reaction chamber 4 is connected to the fuel cell. 5 are connected by pipelines, and the reaction chamber 4 is provided with a block-shaped magnesium hydride filler layer 6, and the block-shaped magnesium hydride filler layer 6 is formed by stacking block-shaped magnesium hydride, and the block-shaped magnesium hydride is granular or cake-shaped, Blocky magnesium hydride is mixed and pressed by MgH2 and other chemical substances (M), M is one of Al, Mg, Zn or Fe, the inner wall of ...

Embodiment 2

[0042] refer to figure 2 , In an embodiment of the present invention, a hydrogen production device using magnesium hydride as a hydrogen storage material includes a water tank 1 , a water pump 2 , a steam generator 3 , and a reaction chamber 4 . The water tank 1 is connected to the water pump 2 through a pipeline, and the water pump 2 is connected to the reaction chamber 4 through a pipeline. The pipeline between the water pump 2 and the reaction chamber 4 is provided with a steam generator 3, and the reaction chamber 4 is connected to the fuel cell. 5 are connected by pipelines, the inner wall of the reaction chamber 4 is wrapped with a 1-50 mm thick porous heat insulating material 7, the upper and lower ends of the reaction chamber 4 are placed with a 1-50 mm thick porous heat insulating material 7, and the two ends of the reaction chamber 4 are respectively A hydrogen outlet 9 and a steam inlet 10 are set, and a thermal insulation material 8 is arranged outside the reactio...

Embodiment 3

[0049] refer to image 3 , in an embodiment of the present invention, a hydrogen production device using magnesium hydride as a hydrogen storage material includes a water tank 1, a water pump 2, a heater 3, and a reaction chamber 4. The water tank 1 is connected to the water pump 2 through a pipeline, and the The water pump 2 is connected to the reaction chamber 4 through a pipe, a steam generator 3 is arranged on the pipe between the water pump 2 and the reaction chamber 4, and the reaction chamber 4 is connected to the fuel cell 5 through a pipe. The inner wall of the reaction chamber 4 is wrapped with a 1-50mm thick porous insulating material 7, and the upper and lower ends of the reaction chamber 4 are placed with a 1-50mm thick porous insulating material 7, and the two ends of the reaction chamber 4 are respectively provided with a hydrogen outlet 9 and a The steam inlet 10, the heat insulation material 8 is arranged outside the reaction chamber 4, the porous mesh materia...

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Abstract

The invention relates to the technical field of hydrogen production, in particular to a hydrogen production device using magnesium hydride as a hydrogen storage material, which includes a reaction chamber in which a block-shaped magnesium hydride filler layer is arranged. A hydrogen production method using magnesium hydride as a hydrogen storage material. The block magnesium hydride of the present invention is formed by mixing and pressing MgH2 and other chemical substances (M), and the MgH2 / M ratio is 10wt.%-80wt.%. Magnesium hydride is in the form of granules or cakes. Among them, the granular size is spherical or irregular spherical with a diameter of 1-50 mm, and the cake-shaped size is a round cake or other cake-shaped shape with a bottom diameter or side length of 1-100 mm and a height of 1-50 mm. Block magnesium hydride is filled in the reaction chamber, the gap between the particles becomes larger, and the energy density of the filler increases, which is conducive to water vapor reaching all parts of the filler, fully contacting and reacting to produce hydrogen efficiently, and at the same time, hydrogen escapes more smoothly from the filler to prevent the reaction A sudden increase in intracavity pressure. The reaction start-up time is shortened by adding the reaction accelerator, and the hydrogen quality is improved by adding the gas purifier.

Description

technical field [0001] The invention relates to the technical field of hydrogen production, in particular to a hydrogen production method and device using magnesium hydride as a hydrogen storage material. Background technique [0002] Magnesium hydride (MgH2) is a known hydrogen storage material, which can react with water to generate hydrogen gas and release a large amount of heat. The chemical reaction equation is as follows: [0003] MgH2+2H2O→Mg(OH)2+2H2,△H=-268kJ / mol-MgH2 [0004] The above hydrogen production method is called hydrolysis hydrogen production. Regarding hydrogen production by hydrolysis, some people proposed a gas-solid reaction (gas–solid reaction), that is, a water vapor-hydride hydrolysis reaction. The liquid water is pumped out from the water tank with a water pump, and the liquid water is vaporized into water vapor through a heater. Enter the reaction chamber and contact with magnesium hydride to generate hydrogen gas, and then introduce the hydrog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/06
CPCC01B3/065Y02E60/36
Inventor 邹建新秦悦谷杰人
Owner 武汉市能智达科技有限公司