Adsorption stripping method for removing ethene and carbon dioxide from mixed gas

A mixed gas, adsorption separation technology, applied in separation methods, dispersed particle separation, chemical instruments and methods, etc., can solve the problem of high cost and achieve the effect of large adsorption surface area
CN1552505AInactive Publication Date: 2004-12-08SICHUAN TIANYI SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN TIANYI SCI & TECH
Publication Date
2004-12-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

An adsorptive separation method for removing ethylene and CO2 from the gas mixture features that in a pressure-varying adsorption system composed of at least two adsorption beds filled by adsorbent chosen from activated carbon, aluminium oxide, silica gel and molecular sieve, easy cycle of adsorption bed includes sequentially such steps as adsorption and at least one lowering of pressure, reversely releasing pressure, vacuumizing or flushing, or at least one increasing of pressure.
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Description

technical field

[0001] The present invention relates to methods for separating gases. Especially the method of removing ethylene and carbon dioxide from mixed gas by pressure swing adsorption. Background technique

[0002] The method of removing ethylene from the mixed gas, especially the mixed gas of the controlled atmosphere fresh-keeping store, mainly adopts the catalytic oxidation method at present. The catalytic oxidation method is to use the noble metal oxidation catalyst to catalytically oxidize (combust) the ethylene in the nitrogen gas into carbon dioxide and carbon dioxide at high temperature. Water, reduce the concentration of ethylene in the air of the air-conditioned fresh-keeping store to ensure the normal operation of the air-conditioned fresh-keeping store. The method is to catalytically oxidize (combust) ethylene in nitrogen into carbon dioxide and water through an oxidation catalyst at a temperature of ~200°C or higher in the exhaust gas of the controlled ...

Claims

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