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특허 상세정보

Natural gas separation using nitrogen-selective membranes of modest selectivity

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B01D-053/22   
미국특허분류(USC) 095/047; 095/049; 095/051; 095/052
출원번호 US-0033680 (2001-12-28)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Farrant, J.
인용정보 피인용 횟수 : 48  인용 특허 : 33
초록

A process for treating natural gas or other methane-rich gas to remove excess nitrogen and optionally excess carbon dioxide, water vapor or hydrogen sulfide. The invention relies on gas separation by membranes, using nitrogen/methane selective membranes. The membranes are characterized by having the capability to exhibit a nitrogen/methane selectivity between about 2 and 5 at a temperature higher than about -25° C. The gas may be brought to pipeline specification for nitrogen, and acid gases if present, without requiring the use of amine scrubbing or oth...

대표
청구항

A process for treating natural gas or other methane-rich gas to remove excess nitrogen and optionally excess carbon dioxide, water vapor or hydrogen sulfide. The invention relies on gas separation by membranes, using nitrogen/methane selective membranes. The membranes are characterized by having the capability to exhibit a nitrogen/methane selectivity between about 2 and 5 at a temperature higher than about -25° C. The gas may be brought to pipeline specification for nitrogen, and acid gases if present, without requiring the use of amine scrubbing or oth...

이 특허에 인용된 특허 (33)

  1. Baker Richard W. (Palo Alto CA) Lokhandwala Kaaeid A. (Menlo Park CA). Acid gas fractionation process. USP1996095558698.
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  14. Baker Richard W. (Palo Alto CA) Lokhandwala Kaaeid A. (Menlo Park CA) Pinnau Ingo (Palo Alto CA) Segelke Scott (Mountain View CA). Methane/nitrogen separation process. USP1997095669958.
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  30. Lokhandwala Kaaeid A. (Menlo Park CA) Baker Richard W. (Palo Alto CA). Sour gas treatment process including membrane and non-membrane treatment steps. USP1995045407466.
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이 특허를 인용한 특허 피인용횟수: 48

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