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A fuel cell power generation system for hydrolyzing magnesium hydride to supply hydrogen

A fuel cell and power generation system technology, applied in the field of hydrogen production by hydrolysis of magnesium hydride, can solve the problem of high cost and achieve the effect of large hydrogen release, high added value of products, and low density

Active Publication Date: 2016-05-11
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] At present, the main obstacles restricting the engineering application of magnesium hydride hydrolysis to hydrogen production are: (1) magnesium hydroxide is hydrolyzed at room temperature to generate magnesium hydroxide, which is attached to the surface of unreacted magnesium hydride and prevents the further progress of the hydrolysis process. In the water, the reaction is sufficient and the speed is fast, see the attached figure 2 ; (2) Compared with traditional fossil energy, the cost of using magnesium hydride to hydrolyze hydrogen is relatively high, and it does not have an advantage in price competition

Method used

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  • A fuel cell power generation system for hydrolyzing magnesium hydride to supply hydrogen
  • A fuel cell power generation system for hydrolyzing magnesium hydride to supply hydrogen

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Close the switch of the fuel cell stack, close the hydrogen pressure regulator (4), the hydrogen partial pressure valve (5), and close the hydrolysis reactor filter (12). The pressure in the hydrogen storage tank (3) is constantly increasing, and the water in the hydrolysis reactor (13) is constantly pressed out, and enters in the water storage tank (11), until the MgH in the hydrolysis reactor 2 The briquettes are completely separated from the water. Close the total hydrogen pressure valve (2). Close the water bath circulation pump (10). The device stops working.

Embodiment 2

[0037] Open the hydrogen total pressure valve (2), the hydrogen pressure regulator (4), the hydrogen partial pressure valve (5), and open the fuel cell stack switch. Turn on the water bath circulating water pump (10). Along with the consumption of hydrogen, the pressure in the hydrogen storage tank (3) decreases continuously, and the water in the water storage tank (11) continuously flows back in the hydrolysis reactor (13) until the liquid level is stable. Open the hydrolysis reactor filter (12). The device works stably.

Embodiment 3

[0039] When the device is working stably, the fuel cell is in a low power state, the hydrogen production rate exceeds the fuel cell consumption rate, the pressure in the hydrogen storage tank (3) is continuously increasing, and the water in the hydrolysis reactor (13) is continuously pressed out and enters the water storage In the tank (11), until the MgH in the hydrolysis reactor 2 The briquette is completely separated from the water, and the hydrolysis reaction stops. Realized automatic shutdown of hydrolysis reaction during work.

[0040] Along with the consumption of hydrogen, the pressure in the hydrogen storage tank (3) constantly reduces, and the water in the water storage tank (11) continuously flows back in the hydrolysis reactor (13), and the MgH in the hydrolysis reactor 2 The briquettes come into contact with water and the hydrolysis reaction starts. The automatic opening of the hydrolysis reaction in the work is realized.

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Abstract

The invention relates to a fuel-cell power generation system for supplying hydrogen by hydrolyzing magnesium hydride. The fuel-cell power generation system comprises the combination of hydrogen generation by hydrolyzing MgH2 and a proton membrane fuel cell. The fuel-cell power generation system utilizes a Kipps apparatus principle and can realize a hydrogen generation immediate supplying / stopping technology. A hydrolysis reactor water bath (1) is communicated with a fuel cell cooling water bath (7) by a pipeline; working residual heat of a fuel cell set is used for heating a reactor to carry out hydrolysis reaction. In the working process, the water baths are communicated to keep the working temperature of a hydrolysis reactor and the working temperature of a fuel cell constant so as to be good for carrying out the reaction. The hydrolysis reactor is connected with a proton exchange membrane fuel cell by a pipeline; water generated by the working of the proton membrane fuel cell can be balanced with water consumed by hydrolyzing the MgH2 so as to realize the cyclic utilization of the water; theoretically, the water does not need to be injected from the outside. A hydrolysis reaction product, namely magnesium hydroxide sediments, can be filtered and recycled by a hydrolysis reactor filtering machine and is industrially utilized to reduce the cost.

Description

technical field [0001] The invention relates to hydrogen production by hydrolysis of magnesium hydride, in particular to a fuel cell power generation system for hydrogen supply by hydrolysis of magnesium hydride. Background technique [0002] Hydrogen energy is an ideal fuel. It has a high calorific value of combustion, water as a product of combustion, zero pollution, light weight, and can be obtained from other renewable resources. Compared with traditional gasoline power generation, fuel cell power generation has the advantages of high efficiency, low pollution, low operating noise and easy detection. [0003] The combination of hydrogen energy and proton membrane fuel cells can directly convert chemical energy into electrical energy, and is especially suitable for making clean energy products that are lightweight and easy to move and carry. It is an attractive alternative to traditional batteries and power generation Machine energy technology can be widely used in ships...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/065H01M8/04119C25B1/02
CPCH01M8/04089H01M8/04126H01M8/06H01M8/0656H01M8/10Y02E60/50
Inventor 张文丛于元春于洋白雪蕊
Owner HARBIN INST OF TECH AT WEIHAI
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