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특허 상세정보

Process for the separation of landfill gas

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F25J-003/06   
미국특허분류(USC) 62/23 ; 55/16 ; 55/23 ; 55/57
출원번호 US-0822311 (1986-01-24)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 80  인용 특허 : 5
초록

A recycle process for the separation of landfill gas containing a wide variety of impurities into a carbon dioxide product stream and a fuel-grade-pressurized methane product stream, the process providing for the removal of both the impurities and the carbon dioxide in a cryogenic column as a bottom stream, the separation of the methane from the overhead product stream by a membrane process, and, optionally, the removal of impurities from the carbon dioxide bottom stream in a separate purification column, to recover a high-quality, liquid, carbon dioxide...

대표
청구항

A recycle process for the separation of a landfill feed gas stream, having a high concentration of methane and carbon dioxide and containing undesirable trace gas impurities, into a fuel-or sales-grade gas methane product stream and a liquid carbon dioxide product stream, which process comprises: (a) introducing an essentially hydrogen-free, dried, compressed, landfill feed gas stream into a cryogenic distillation column; (b) withdrawing a methane-enriched overhead product stream from said distillation column; (c) withdrawing an enriched liquid carbon di...

이 특허를 인용한 특허 피인용횟수: 80

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