Hydrogen production method and device with magnesium hydride as hydrogen storage material

A hydrogen storage material and hydrogen production device technology, applied in the field of hydrogen production, can solve problems such as damage or combustion, affect the quality of hydrogen, and damage the life of fuel cells, so as to promote the hydrolysis reaction, shorten the start of the reaction, and prevent the loss of reaction heat.

Active Publication Date: 2019-01-22
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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  • Hydrogen production method and device with magnesium hydride as hydrogen storage material
  • Hydrogen production method and device with magnesium hydride as hydrogen storage material
  • Hydrogen production method and device with magnesium hydride as hydrogen storage material

Examples

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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, and in particular, relates to a hydrogen production device with magnesium hydride as a hydrogen storage material, wherein the hydrogen production device includes a reaction chamber; a massive magnesium hydride filler layer is arranged in the reaction chamber. Provided is a hydrogen production method with magnesium hydride as thehydrogen storage material; massive magnesium hydride is prepared by mixing and pressing MgH2 and other chemical substances (M), the MgH2/M ratio is 10 wt.%-80 wt.%, and the massive magnesium hydride is shaped as particles or cakes, wherein the particles are spheres or irregular spheres with the diameter of 1-50 mm, and the cakes are round cakes or cakes with other shapes with the bottom diameter or side length of 1-100 mm and the height of 1-50 mm. The massive magnesium hydride is stacked and filled in the reaction chamber, the void between the particles becomes larger and the energy density of the filler increases so as to be conducive to full contact reaction of water vapor to all parts of the filler to produce hydrogen with high efficiency. At the same time, hydrogen gas escapes from the filler more smoothly to prevent the sudden increase of the pressure in the reaction chamber. The start-up time of reaction is shortened by adding a reaction promoter, and the quality of hydrogen gasis improved by adding a 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 Applications(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
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