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특허 상세정보

Regeneration of adsorbents

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B01D-053/04   
미국특허분류(USC) 55/26 ; 55/28 ; 55/31 ; 55/33
출원번호 US-0107064 (1987-10-08)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 74  인용 특허 : 9
초록

In the recovery of methane and carbon dioxide from landfill gas (LFG) a selective adsorption system is employed having a pretreat section operated in temperature swing adsorption mode (TSA) to remove water and trace hydrocarbon contaminants, in flow communication with a pressure swing adsorption section (PSA) for separation of the methane from CO2 contained in the purified gas stream discharged from the pretreat section. The LFG is introduced into a column in the TSA section and passed consecutively through a layer of activated carbon followed by a layer...

대표
청구항

In the process for pretreatment of landfill gas by selective adsorption for removal of trace impurities therein prior to bulk separation of CO2 from CH4 contained in the pretreated gas, the improvement which comprises: (A) passing said landfill gas at superatmospheric pressure into the feed end and through a column containing successive layers of adsorbent wherein hydrocarbons and halohydrocarbons boiling above methane are removed by selective adsorption in the first of such layers and water and sulfur compound are retained by adsorption in the succeedin...

이 특허를 인용한 특허 피인용횟수: 74

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