|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||423/351 ; 55/16 ; 55/68 ; 252/372|
|발명자 / 주소|
|인용정보||피인용 횟수 : 41 인용 특허 : 6|
High-purity nitrogen is recovered from combustion gas such as exhaust stack gases, by utilizing selective gas-permeable membranes to separate by rejection, nitrogen from the other gases present in the gas stream.
A process for the production of nitrogen, which comprises: (a) combusting a carbonaceous fuel to form a combustion gas comprising nitrogen, carbon dioxide, and oxygen; (b) treating the combustion gas to remove to the extent present particulates, the oxides of sulfur, and the oxides of nitrogen and compressing the treated gas stream with or without water condensation in one or more stages of compression to a pressure sufficient to enable membrane separation of molecular nitrogen from carbon dioxide and oxygen; and (c) contacting the compressed, treated ga...