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Magnesium hydride compound powder, preparation method thereof and hydrogen preparation and storage integrated device adopting magnesium hydride compound powder

A compound, magnesium hydride technology, applied in the field of hydrogen production and hydrogen storage, can solve problems such as affecting reaction efficiency, and achieve the effects of improving reaction efficiency, improving reaction kinetics and good control

Active Publication Date: 2016-10-12
WUHAN KAIDI ENG TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a magnesium hydride composite powder and its preparation method and its integrated hydrogen production and hydrogen storage device, which can effectively solve the problem that magnesium hydride is easy to form passivation during the hydrolysis process, thereby affecting the reaction efficiency

Method used

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  • Magnesium hydride compound powder, preparation method thereof and hydrogen preparation and storage integrated device adopting magnesium hydride compound powder
  • Magnesium hydride compound powder, preparation method thereof and hydrogen preparation and storage integrated device adopting magnesium hydride compound powder
  • Magnesium hydride compound powder, preparation method thereof and hydrogen preparation and storage integrated device adopting magnesium hydride compound powder

Examples

Experimental program
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Effect test

Embodiment 1

[0049] As shown in Table 1, in a hydrogen atmosphere, 100g of magnesium powder, 8g of graphite, 1g of graphene, and 1g of Ti were placed in a vacuum ball mill and fully ball milled at 150°C for about 1.5h to obtain magnesium hydroxide composite powder. The magnesium hydroxide composite powder is sent to the aforementioned hydrogen production and hydrogen storage integrated device to produce hydrogen, and the raw materials and water are sprayed into the hydrogen generator 1, and the hydrogen production rates under different reaction times are shown in Table 2. .

Embodiment 2～6

[0051] According to the raw materials and parameters of each embodiment listed in Table 1, the magnesium hydride composite powder is prepared with reference to the steps in Example 1, and the magnesium hydride composite powder is sent to the aforementioned hydrogen production and hydrogen storage integrated device to produce hydrogen. and water are all added in the hydrogen generator 1 in the form of spraying, without

[0052] The hydrogen production rate (referring to the cumulative hydrogen production rate) under the same reaction time is shown in Table 2.

[0053] Table 1 raw material ratio and reaction conditions

[0054]

[0055] Table 2 hydrogen production rate - reaction time

[0056]

[0057] In the above table, the hydrogen production rate=reaction time when the reaction time is t is the cumulative hydrogen production (in g) when the reaction time is 0~t ÷ the reaction whole process drops into the magnesium hydride composite powder (for embodiment 1 is magnesiu...

Embodiment 3

[0061] The magnesium hydride composite powder used in Example 3 is the same as that used in Comparative Example 2. The difference is that the aforementioned integrated hydrogen production and storage device is used in Example 3 to produce hydrogen, and the composite powder and water are added in the form of spray to generate hydrogen. device 1. It can be seen from Table 2 that when the reaction time is 300s, the hydrogen production rate of Example 3 is increased by 24% compared with Comparative Example 2. It can be seen that the hydrogen production rate can be significantly improved by adopting the hydrogen production and hydrogen storage integrated device provided by the present invention.

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Abstract

The invention discloses magnesium hydride compound powder. The magnesium hydride compound powder is mainly prepared from raw materials in parts by weight as follows: 100 parts of magnesium powder, 5.3-11.4 parts of graphite, 0.5-2.3 parts of graphene and 0-1.7 parts of an antioxidant, the raw materials are subjected to ball milling for 1-2.5 h at the temperature of 150-200 DEG C under the hydrogen atmosphere, and the magnesium hydride compound powder with the particle size of 15-25 nm is prepared. The invention further discloses a hydrogen preparation and storage integrated device adopting the magnesium hydride compound powder. The hydrogen preparation and storage integrated device comprises a feeding device, a water supply device, a hydrogen generator and a hydrogen separation device, wherein a powder spraying device and a water spraying device are arranged on the hydrogen generator; a powder output port of the feeding device is connected with a powder input port of the powder spraying device; a water outlet of the water supply device is connected with a water inlet of the water spraying device; a mixed gas input port of the hydrogen separation device is connected with a mixed gas output port of the hydrogen generator. A small amount of graphite and graphene is added to magnesium hydride, and reaction kinetics of magnesium hydride is improved; the raw materials and water are added to the hydrogen generator in a spraying manner, so that the reaction efficiency is improved.

Description

technical field [0001] The invention relates to hydrogen production and storage technology in the field of fuel cells, in particular to a magnesium hydride composite powder and its preparation method and its integrated hydrogen production and storage device. Background technique [0002] Hydrogen is one of the important options for future energy carriers. In the context of global warming and increasingly serious environmental pollution, the widespread use of new energy sources is imminent, and hydrogen energy has attracted widespread attention due to its unique advantages. Under the leadership of this round of global renewable energy wave, hydrogen energy has shown its importance in the energy field with its characteristics. It is the most common element in the world and produces no harmful substances when burned. In the field of military industry, because it can almost achieve silent operation, hydrogen fuel cells are favored by all countries, and more and more countries ...

Claims

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Application Information

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IPC IPC(8): C01B3/06
CPCC01B3/065C01B2203/025Y02E60/36
Inventor 程宇婷郑兴才周欢欢武慧君
Owner WUHAN KAIDI ENG TECH RES INST CO LTD
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