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Hydrogen preparing method and device

A technology for preparing equipment and hydrogen, applied in the production of hydrogen and other directions, can solve the problems of inability to achieve zero emission of harmful gases, inability to apply high-power fuel cells, and high cost of hydride raw materials, achieving abundant reserves, easy control of reaction speed, and energy. The effect of high utilization

Inactive Publication Date: 2002-12-11
天津海蓝德能源技术发展有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Both the high-pressure hydrogen cylinder method and the low-temperature liquefied hydrogen method have disadvantages such as high cost and poor safety during use and transportation; although methanol or gasoline reforming method is more convenient to use and can integrate hydrogen production and hydrogen storage, the disadvantages are High reforming temperature is required, the energy conversion rate is low, so the cost is high, and zero emission of harmful gases cannot be achieved
The metal hydride solid-state hydrogen storage method is a safer hydrogen storage method, but the disadvantage is that the hydrogen storage capacity is low, it cannot be applied to high-power fuel cells, and the hydrogen desorption performance at low temperature is poor
The inorganic hydride hydrogen storage method is to produce hydrogen by using the principle that inorganic hydrides such as sodium borohydride, sodium hydride, lithium hydride, and calcium hydride react with water to generate hydrogen. This method is characterized by fast hydrogen production and low temperature The disadvantage of hydrogen production is that the cost of hydride raw materials is high, and it is difficult to recycle and reuse, so it is difficult to be widely used

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0039] In the reactor with feeding port, gas outlet, temperature measurement insertion port, adding average particle size is 177 microns, 1 gram of aluminum powder with a purity of 96%, and then the weight percentage concentration is 5% sodium hydroxide aqueous solution 35ml was added to the reaction vessel, the initial reaction temperature was 20°C, and the temperature rose after the reaction started, and the aluminum powder and sodium hydroxide aqueous solution reacted in the reactor to obtain the hydrogen product.

Embodiment 2

[0041]In a reactor with a feeding port, a gas outlet, and a temperature measurement insertion port, add 1 gram of aluminum powder with an average particle diameter of 74 microns and a purity of 99%, and then add 35 ml of a 5% aqueous sodium hydroxide solution Add it into the reaction vessel, the reaction starting temperature is 20°C, the temperature rises after the reaction starts, and the temperature is 88°C at the end of the reaction, the aluminum powder and the sodium hydroxide aqueous solution react in the reactor to obtain the hydrogen product.

Embodiment 3

[0043] The conditions and steps are the same as in Example 1, the average particle size of the aluminum powder used is 0.177mm, and the purity is 96%; the concentration of the sodium hydroxide aqueous solution is 10% by weight; the hydrogen product is obtained by the reaction.

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Abstract

The present ivnention relates to hydrogen preparation. Hydrogen is prepared through the reaction of metal aluminum powder with average size of 10 nm to 10 nm with water solution of sodium hydroxide of concentration 0.1-30 % in a reactor. The hydrogen preparing apparatus includes liquid container, reactor, aluminum powder container, hydrogen storing tank and liquid exhaust unit connected via pipeline and valve. The present invention has low material cost, easily controlled reaction speed, stable hydrogen output, no environmental pollution and other advantages and is especially suitable for hydrogen fuel battery.

Description

technical field [0001] The invention belongs to the technical field of hydrogen production, in particular to a method for producing hydrogen by reacting metal aluminum and sodium hydroxide and a hydrogen supply device thereof. Background technique [0002] As an important chemical substance, hydrogen is widely used in chemical industry, petroleum industry, food and metallurgical industry. At the same time, hydrogen is also a clean energy material. The current utilization and development of fuel cells, especially the utilization and development of proton exchange membrane fuel cells (PEFC), has become the frontier technology field in the new century to overcome the energy crisis and environmental pollution, especially for mobile tools driven by hydrogen-oxygen fuel cells. The research and development of the technology has been listed as a key investment research project by developed countries, and has launched a situation of mutual cooperation and competition among internati...

Claims

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Application Information

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IPC IPC(8): C01B3/08
CPCY02E60/36
Inventor 孙元明黄岳祥
Owner 天津海蓝德能源技术发展有限公司
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