Process for providing high-purity hydrogen

A hydrogen and hydrogen-rich technology, applied in container discharge methods, chemical instruments and methods, hydrogen, etc., can solve the problems of low purity and inability to use directly, and achieve the effect of reducing reaction temperature, reducing operating costs, and improving reaction selection

Active Publication Date: 2020-11-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the hydrogen obtained by the usual method has relatively low purity, especially the hydrogen produced by some organic conversion processes such as catalytic cracking dry gas, hydrogen produced by methane conversion, hydrogen produced by dehydrogenation of organic liquids, etc., usually contain a large amount of organic matter, which cannot be directly Use, use after purification

Method used

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preparation example Construction

[0029] The present invention has no limitation on the preparation method of the dehydrogenation catalyst, as long as the active metal can be loaded on the carrier; preferably, the metal precursor is dissolved in deionized water to obtain a metal precursor solution; the metal precursor solution It is introduced onto the support by means of co-impregnation or step-by-step impregnation, and the impregnation can be saturated impregnation or supersaturated impregnation. When the catalyst contains two or more active metals, the co-impregnation means that two or more metal elements can be dissolved together in deionized water, and then the impregnating solution is impregnated on the carrier, followed by drying and roasting. The step-by-step impregnation is to dissolve two or more active metal elements in deionized water respectively, and impregnate the metal impregnating solution on the carrier respectively, and the carrier obtained after each impregnation needs to be dried and roaste...

Embodiment 1

[0073] Calcining SB powder at 500℃ for 5h to obtain γ-Al 2 o 3 , named M-1.

Embodiment 2

[0075]The P25 vector was used and named M-2.

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Abstract

The invention relates to the field of hydrogen preparation and purification, and provides a method for providing high-purity hydrogen. The method comprises the following steps: (1) carrying out a contact reaction on an organic liquid hydrogen storage raw material and a dehydrogenation catalyst to obtain a hydrogen-containing dehydrogenation reaction product; (2) cooling the hydrogen-containing dehydrogenation reaction product to obtain a liquid product and a hydrogen-rich gas product, and collecting the liquid product; (3) allowing the hydrogen-rich gas to make contact with hydrogen storage alloy so as to obtain hydrogen-containing alloy, and collecting non-adsorbed gas, wherein the hydrogen storage alloy is magnesium A2B type hydrogen storage alloy; and (4) heating the hydrogen-containingalloy to release hydrogen so as to obtain high-purity hydrogen. The method provided by the invention not only can produce high-purity hydrogen with a purity of 99.999% or above, but also can reduce the hydrogen partial pressure of organic liquid dehydrogenation, promote the dehydrogenation reaction of organic liquid, reduce reaction temperature, improve reaction selection and lower operation costthrough the 100% selectivity of the hydrogen storage alloy to the hydrogen reaction.

Description

technical field [0001] The invention relates to the field of hydrogen production and purification, in particular to a method for providing high-purity hydrogen. Background technique [0002] With the progress of society, the development of industry and the improvement of people's material living standards, the demand for energy is also increasing day by day. Since the energy currently used mainly comes from fossil fuels, such as coal, oil and natural gas, which inevitably pollute the environment, and its reserves are limited, it is urgent to find renewable green energy. As a renewable energy source, hydrogen not only has high energy efficiency, but also produces almost no waste. The development of hydrogen is expected to become an important way to improve energy efficiency, reduce oil consumption, improve the ecological environment, and ensure energy security. Then sustainable and efficient large-scale hydrogen production technology The development of hydrogen has become an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/26C01B3/00
CPCC01B3/0042C01B3/0031C01B3/0057C01B3/0052C01B3/26C01P2006/80F17C11/005C01B3/508C01B3/0047B01J21/066B01J21/063B01J35/002B01J37/0238B01J23/42B01J23/56B01J23/76B01J23/755B01J35/1019B01J35/1038B01J23/835B01J23/44B01J23/468B01J37/0207B01J23/622B01J23/892B01J23/6562B01J23/80B01J23/8966B01J23/8926B01J23/8986Y02P90/45Y02E60/32B01J23/26C01B3/50F17C1/00F17C11/00F17C7/04B01J8/24B01J23/6567B01J23/8892B01J27/1853B01J35/1042B01J35/1047B01J37/082C01P2002/72C01P2002/85
Inventor 杨雪林伟刘俊宋烨宋海涛孙敏王磊
Owner CHINA PETROLEUM & CHEM CORP
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