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A system and method for purifying hydrogen by pressure swing adsorption

A pressure swing adsorption, hydrogen technology, applied in separation methods, chemical instruments and methods, hydrogen/synthesis gas production, etc., can solve problems such as low hydrogen recovery rate, and achieve the effects of simple implementation, convenient use, and increased recovery rate

Active Publication Date: 2021-12-17
SOUTHWEST RES & DESIGN INST OF CHEM IND
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  • Abstract
  • Description
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a system and method for purifying hydrogen by pressure swing adsorption, which solves the problem of C atoms (CO, CO 2 and CH 4 ) technical problem of low hydrogen recovery rate when the content requirement is strict

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  • A system and method for purifying hydrogen by pressure swing adsorption
  • A system and method for purifying hydrogen by pressure swing adsorption
  • A system and method for purifying hydrogen by pressure swing adsorption

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028]In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying ...

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Abstract

The invention discloses a system and method for purifying hydrogen by pressure swing adsorption. When the product hydrogen requires CO, CO 2 and CH 4 Strictly speaking, by adding nitrogen to the raw material gas, the proportion of impurities in the raw material gas is adjusted, so as to ensure that the hydrogen molar content of the product is above 99.9%, and at the same time increase the hydrogen recovery rate. For each increase of 1% nitrogen in the raw material gas flow, The hydrogen recovery rate can be increased by 0.3 to 2 percentage points. Compared with the conventional pressure swing adsorption hydrogen purification system, the present invention has little change and brings obvious benefits. It is not only suitable for new equipment, but also suitable for the renovation of existing equipment.

Description

technical field [0001] The invention belongs to the technical field of pressure swing adsorption gas separation, and in particular relates to a pressure swing adsorption hydrogen purification system and a method thereof. Background technique [0002] Pressure swing adsorption technology is widely used in the separation of various mixed gases, such as the purification of oxygen and nitrogen from air, the purification of carbon dioxide from industrial tail gas rich in carbon dioxide, the purification of carbon monoxide from mixed gases rich in carbon monoxide, and the purification of various Hydrogen is purified from the mixed gas containing hydrogen. As an important industrial gas, hydrogen has a large demand and a wide range of applications. Therefore, the research and development of pressure swing adsorption adsorption hydrogen purification technology is more in-depth. [0003] For example, the patent CN 1984705 B discloses a three-bed pressure swing adsorption system that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/56B01D53/047
CPCC01B3/56B01D53/047C01B2203/043C01B2203/047C01B2203/0475C01B2203/048Y02P20/151
Inventor 陈健卜令兵王键张宏宇李克兵吴巍周晓烽李小荣
Owner SOUTHWEST RES & DESIGN INST OF CHEM IND
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