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Method for providing high-purity and high-pressure hydrogen

A high-pressure hydrogen, high-purity technology, applied in container discharge methods, chemical instruments and methods, and equipment discharged from pressure vessels, etc., can solve the problems that hydrogen organic compounds are not suitable for direct use, and hydrogen is not easy to store and transport. The effect of reducing hydrogen partial pressure, reducing operating costs, and improving dehydrogenation selectivity

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

[0005] The purpose of the present invention is to provide a method for providing high-purity and high-pressure hydrogen to overcome the problems in the prior art that hydrogen is not easy to store and transport, and the hydrogen released by organic hydrogen storage compounds is not suitable for direct use because it contains organic compounds. The advantages of higher hydrogen conversion rate, higher hydrogen storage capacity of hydrogen storage alloy and higher hydrogen purity and pressure

Method used

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  • Method for providing high-purity and high-pressure hydrogen
  • Method for providing high-purity and high-pressure hydrogen
  • Method for providing high-purity and high-pressure hydrogen

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preparation example Construction

[0062] The preparation method of the hydrogen storage alloy is not particularly limited in the present invention, and it can be prepared by any existing method in the art. Preferably, the preparation method of the hydrogen storage alloy comprises the following steps:

[0063] 1) Weighing each raw material of the hydrogen storage alloy in a manner to achieve the composition of the hydrogen storage alloy and mixing;

[0064] 2) melting the material obtained by mixing in step 1), and then annealing.

[0065] The present invention has a wide range of options for the smelting methods and conditions, and various existing smelting methods and conditions are within the protection scope of the present invention. The smelting includes but not limited to electric furnace smelting and induction smelting. The electric furnace smelting and induction smelting have conventional illustrations in the field, and the present invention will not repeat them here.

Embodiment approach

[0066] According to a preferred embodiment of the present invention, the conditions of the smelting include: carrying out under vacuum or an inert atmosphere at a temperature of 1200-3000°C, preferably 1800-2200°C.

[0067] According to a preferred embodiment of the present invention, the smelting is carried out under vacuum, and the pressure of the smelting is 1×10 -5 -1×10 -3 Pa, preferably 0.5×10 -4 -5×10 -4 Pa.

[0068] According to a preferred embodiment of the present invention, the smelting is carried out under an inert atmosphere, and the smelting pressure is 0.5-1 bar, preferably 0.7-1 bar.

[0069]According to the present invention, preferably, the smelting time is 0.1-3 hours, more preferably 10-60 minutes.

[0070] The inert atmosphere may be provided by an inert gas, and the inert gas includes but not limited to at least one of argon, helium, and neon. Preferably, the inert atmosphere is provided by argon.

[0071] According to the method provided by the pre...

preparation example 1-1

[0102] SB powder was calcined at 500℃ for 4h to obtain carrier γ-Al 2 o 3 , named M-1.

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Abstract

The invention relates to the technical field of high-purity and high-pressure hydrogen preparation, and discloses a method for providing high-purity and high-pressure hydrogen. The method comprises the steps that (1) an organic liquid hydrogen storage raw material and a dehydrogenation catalyst are in contact to react, and hydrogen containing dehydrogenation reaction products are obtained; (2) thedehydrogenation reaction products are cooled, liquid products and hydrogen-rich gas products are obtained, and the liquid products are collected; (3) hydrogen-rich gas and a hydrogen storage alloy are in contact, a hydrogen containing alloy is obtained, non-adsorbed gas is collected, and then organic matter in a hydrogen containing alloy storage container is removed optionally; and (4) the hydrogen containing alloy is heated, and hydrogen is released. By means of the method, the dehydrogenation conversion rate, the hydrogen purity and pressure and the hydrogen storage quantity of the hydrogenstorage alloy can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of high-purity high-pressure hydrogen preparation, in particular to a method for providing high-purity high-pressure 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 dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C11/00C01B3/00C01B3/50
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 杨雪林伟宋烨孙敏刘俊宋海涛王磊
Owner CHINA PETROLEUM & CHEM CORP
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