Title:
NITROUS OXIDE SELECTIVE GAS SEPARATION MEMBRANE AND METHOD FOR PURIFYING NITROUS OXIDE USING SAME
Document Type and Number:
WIPO Patent Application WO/2018/004314
Kind Code:
A1
Abstract:
The present invention provides a nitrous oxide selective gas separation membrane which comprises a gas separation layer containing a polymer material which is a polysulfone-based polymer or a polyimide-based polymer, the nitrous oxide selective gas separation membrane exhibiting a nitrous oxide separation property. The nitrous oxide selective gas separation membrane according to the present invention is efficient in the separation of high-purity nitrous oxide from a carbon suboxide-containing gas mixture produced in a process for manufacturing nitrous oxide by pyrolysis of ammonium nitrate containing nitrous oxide, nitrogen or oxygen or other gases as main ingredients, and from a nitrous oxide-containing exhaust gas mixture discharged in industrial processes such as processes for manufacturing adipic acid, nitric acid and caprolactam, and can economically perform a separation and concentration.
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Inventors:
KIM JEONG HOON (KR)
LEE SOO BOK (KR)
LEE SOO BOK (KR)
Application Number:
PCT/KR2017/007000
Publication Date:
January 04, 2018
Filing Date:
June 30, 2017
Export Citation:
Assignee:
KOREA RES INST CHEMICAL TECH (KR)
International Classes:
B01D71/68; B01D53/22; B01D63/02; B01D63/06; B01D63/10; B01D67/00; B01D69/04; B01D69/08; B01D69/10; B01D71/64
Foreign References:
| JP2003038942A | 2003-02-12 | |||
| KR20060085845A | 2006-07-28 | |||
| US4230463A | 1980-10-28 | |||
| KR20110130486A | 2011-12-05 | |||
| US5409524A | 1995-04-25 |
Attorney, Agent or Firm:
LEE, Won Hee (KR)
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