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Device and method for preparing high-purity hydrogen and/or oxygen by electrolyzing water

A technology for electrolysis of water and hydrogen, applied in the direction of electrolysis components, electrolysis process, cells, etc., can solve the problem that argon is not very effective, and achieve the effect of low-cost purification equipment, simple purification process, and reduced content

Active Publication Date: 2020-04-07
LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
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Problems solved by technology

Conventional methods for separating impurities and purifying product gases include adsorption and cryogenic distillation under different temperature and pressure conditions. However, the above methods are not very effective for separating hydrogen and argon in oxygen products.

Method used

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  • Device and method for preparing high-purity hydrogen and/or oxygen by electrolyzing water
  • Device and method for preparing high-purity hydrogen and/or oxygen by electrolyzing water
  • Device and method for preparing high-purity hydrogen and/or oxygen by electrolyzing water

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Embodiment Construction

[0024] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, the present invention should be understood as not limited to such embodiments described below, and the technical idea of ​​the present invention can be implemented in combination with other known technologies or other technologies having the same functions as those known technologies.

[0025] In the description of the following specific embodiments, in order to clearly demonstrate the structure and working mode of the present invention, many directional words will be used to describe, but "front", "rear", "left", "right", "outer Words such as ", "inwardly", "outwardly", "inwardly", "axially" and "radially" are to be understood as convenient terms and should not be understood as limiting terms.

[0026] In the following description of specific embodiments, it should be understood that the terms "length", "width", "upper", "lower", "fron...

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Abstract

The invention discloses a device for preparing high-purity hydrogen and / or oxygen by electrolyzing water, wherein the device comprises an electrolyzer and a degasser for degassing desalted water, andthe degasser is positioned at the upstream of the electrolyzer. After desalted water is heated and degassed in the degasser, the content of gaseous impurities, particularly argon, can be reduced to several ppb (weight ratio), and the hydrogen and the oxygen generated after the desalted and degassed water is electrolyzed in the electrolyzer also contain a extremely small amount of argon, so that the requirements in semiconductor industry are met. The invention also discloses a method for preparing high-purity hydrogen and / or oxygen by using the device.

Description

technical field [0001] The invention belongs to the field of high-purity gas preparation, in particular to the preparation of high-purity hydrogen and / or oxygen, and relates to a device and method for electrolyzing water to produce high-purity hydrogen and oxygen. Background technique [0002] Industrially, hydrogen is produced in various ways, such as chemical hydrogen production including steam methane reforming and methanol reforming, and electrical hydrogen production by electrolysis of water. The basic principle of electrolyzing water to produce hydrogen and oxygen is that water is converted into gaseous hydrogen and oxygen by direct current electricity. According to the operating temperature, it is mainly divided into low-temperature electrolyzer and high-temperature electrolyzer. The former includes alkaline electrolyzer and proton exchange membrane electrolyzer. Both of them have become mature technologies used in commerce. [0003] The semiconductor industry needs ...

Claims

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Application Information

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IPC IPC(8): C25B1/04C25B9/00C25B15/08C25B15/00
CPCC25B1/04C25B9/00C25B15/08C25B15/00Y02E60/36C25B15/021C25B15/085C02F1/20C02F1/461C02F2201/4617C02F2201/46115C25B9/67C01B3/042C01B13/0207C01B13/16C02F1/265
Inventor 阿兰·布里格利亚埃里克·戴迈克·瓦奇姆
Owner LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
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