Process for nitrous oxide purification

A nitrous oxide, carbon monoxide technology, applied in the directions of nitrous oxide, nitrous oxide capture, chemical instruments and methods, etc., can solve the problems of pollution of nitrous oxide, waste, etc.
CN1361749AInactive Publication Date: 2002-07-31阿申德高新材料有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
阿申德高新材料有限责任公司
Publication Date
2002-07-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method for purification of a nitrous oxide gas by feeding the nitrous oxide gas and a reducing agent into a de-oxidation reactor, performing de-oxidation by reacting the reducing agent with oxygen using a catalyst in order to deplete the oxygen in the nitrous oxide gas, while limiting the amount of nitrous oxide removed from the nitrous oxide gas.
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Description

field of invention

[0001] The present invention relates to a method for purifying nitrous oxide by removing various impurities. Background of the invention

[0002] Various methods of purifying exhaust and tail gases produced by some thermal power plants are well known in the art. Such exhaust gas contains undesirable components such as NO X (including NO, N 2 o 3 , NO 2 , N 2 o 4 , N 2 o 5 Nitrogen oxides, etc.), sulfur oxides, etc. These methods are based either on absorbing these impurities with liquid absorbents or on converting (reducing) them into harmless compounds such as NO X reduced to water vapor and nitrogen). The most widely used reduction NO X The best way is to use ammonia and selective catalytic reduction (SCR). Selective catalytic reduction makes NO X Reduction to elemental nitrogen and water vapor is possible. 4,859,439; 4,855,115; 4,789,533; 4,438,082; 4,720,476; 4,695,438; 4,732,743; 4,975,256; 4,521,388; The exhaust g...

Claims

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