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특허 상세정보

Selective removal of nitrogen from natural gas by pressure swing adsorption

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B01D-053/047   
미국특허분류(USC) 95/099; 95/105; 95/115; 95/130; 95/143; 95/901; 95/902
출원번호 US-0699664 (2000-10-30)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Stuart D. Frenkel
인용정보 피인용 횟수 : 45  인용 특허 : 23
초록

A pressure swing adsorption process for the separation of nitrogen from natural gas utilizes two separate pressure swing adsorption stages, the first containing a hydrocarbon-selective adsorbent and the second containing a nitrogen-selective adsorbent. In the process, the product stream from the first pressure swing adsorption unit contains a natural gas stream having a reduced hydrocarbon content and the product stream from the second pressure swing adsorption unit is a natural gas stream having a reduced nitrogen concentration. The product from the sec...

대표
청구항

1. A pressure swing absorption (PSA) process for the separation of nitrogen from a mixture of the same with methane which comprises:(a) passing a feed stream comprising said mixture in contact with a nitrogen-selective sorbent in a PSA unit so as to preferentially adsorb nitrogen and produce a methane-rich product stream containing at least 70 mol. % methane and a low pressure purge stream having a higher molar concentration of nitrogen than said mixture; and (b) subsequent to step (a), periodically heating said nitrogen-selective sorbent with the methan...

이 특허에 인용된 특허 (23)

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  10. Fuderer Andrija (Antwerpen BEX). Pressure swing adsorption with intermediate product recovery. USP1985044512780.
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  14. Kumar Ravi (Allentown PA). Purge effluent repressurized adsorption process. USP1994105354346.
  15. Sircar Shivaji (Wescosville PA). Regeneration of adsorbents. USP1988114784672.
  16. Chao Chien-Chung (Millwood NY). Selective adsorption on magnesium-containing clinoptilolites. USP1990104964889.
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  19. Kuznicki Steven M. ; Bell Valerie A. ; Petrovic Ivan ; Blosser Patrick W.. Separation of nitrogen from mixtures thereof with methane utilizing barium exchanged ETS-4. USP1999115989316.
  20. Kuznicki Steven M. ; Bell Valerie A. ; Petrovic Ivan ; Desai Bipin T.. Small-pored crystalline titanium molecular sieve zeolites and their use in gas separation processes. USP2000056068682.
  21. Chen Yudong ; Kapoor Akhilesh ; Ramachandran Ramakrishnan. Two stage pressure swing adsorption process. USP1999115993517.
  22. Choe Jung S. (Harleysville PA) Kellogg ; Jr. Lyndon J. (Salington PA) Weimer Robert F. (Allentown PA). Two stage pressure swing adsorption process for producing the less strongly adsorbed component of a feed gas mixture. USP1995015382280.
  23. Whysall Michael ; Wagemans Ludovicus Jan Marie,BEX. Very large-scale pressure swing adsorption processes. USP2001046210466.

이 특허를 인용한 특허 피인용횟수: 45

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  2. Fowler, Tracy A.; Huntington, Richard A.; Fulton, John W.. Apparatus and system for swing adsorption processes related thereto. USP20190310220346.
  3. Fowler, Tracy A.; Ramkumar, Shwetha; Frederick, Jeffrey W.; Nagavarapu, Ananda K.; Chialvo, Sebastian; Tammera, Robert F.; Fulton, John W.. Apparatus and system for swing adsorption processes related thereto. USP20180810040022.
  4. Johnson, Robert A.; Deckman, Harry W.; Kelley, Bruce T.; Oelfke, Russell H.; Ramkumar, Shwetha. Apparatus and system for swing adsorption processes related thereto. USP20180910080991.
  5. McMahon, Patrick D. J.; Johnson, Robert A.; Ramkumar, Shwetha; Oelfke, Russell H.; Thomas, Eugene R.; Nagavarapu, Ananda K.; Barnes, William. Apparatus and system for swing adsorption processes related thereto. USP20181110124286.
  6. Nagavarapu, Ananda K.; Marshall, Bennett D.. Apparatus and system for swing adsorption processes related thereto. USP20190310220345.
  7. Nagavarapu, Ananda K.; Smith, Ransdall K.; Oelfke, Russell H.. Apparatus and system for swing adsorption processes related thereto. USP20180910080992.
  8. Tammera, Robert F.. Apparatus and system for swing adsorption processes related thereto. USP2017099751041.
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