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특허 상세정보

Recovery of methane from land fill gas

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B01D-053/04   
미국특허분류(USC) 55/26 ; 55/58 ; 55/62 ; 55/68
출원번호 US-0092746 (1987-09-03)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 79  인용 특허 : 0
초록

High purity methane and carbon dioxide are recovered from landfill gas in an integrated multi-column adsorption system having a temperature swing adsorption section (TSA) for pretreatment of the crude landfill gas to remove trace impurities therefrom, the thus cleaned gas being fed to a pressure swing adsorption section (PSA) for bulk separation of CO2 from methane. Regeneration of the impurity-laden adsorbent bed of the TSA section is carried out using part of the CO2 product gas recovered from the PSA section which gas is heated to thermal regeneration...

대표
청구항

In the process for purification and recovery of methane from landfill gas by subjecting such gas to pretreatment for removal of trace impurities therefrom followed by bulk separation of CO2 from CH4 from the pretreated gas by selective adsorption, the improvement which comprises; effecting such pretreatment in a multi-column temperature swing adsorption section integrated with a subsequent multi-column pressure swing adsorption section in which the separation of CO2 from CH4 is carried out, wherein a portion of the separated CO2 product recovered from th...

이 특허를 인용한 특허 피인용횟수: 79

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