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특허 상세정보

Temperature swing adsorption and selective catalytic reduction NOx removal system

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F01N-003/00   
미국특허분류(USC) 060/288; 060/274; 060/286; 060/298; 060/300; 060/301
출원번호 US-0839397 (2004-05-05)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 38  인용 특허 : 21
초록

The invention relates to systems for removing NOx from exhaust. In one aspect of the invention, after adsorption, an NOx adsorber is isolated from the main exhaust flow and desorption induced by raising the temperature. The desorbed NOx is combined with a reductant and reduced over a catalyst. Preferably, the reductant is syn gas produced in an on-board reformer. The catalyst need never be exposed to the main exhaust flow, which is particularly advantageous for catalysts sensitive to water, oxygen, or sulfur. In another aspect of the invention, a recir...

대표
청구항

The invention claimed is: 1. A vehicle, comprising: an internal combustion engine; an NOx adsorber configured to receive exhaust from the internal combustion engine; a catalyst bed configured to receive gas desorbed from the NOx adsorber, the catalyst bed comprising a catalyst for a reaction between NO and a reductant selected from the group consisting of synthesis gas products, ammonia, hydrocarbons, and oxygenated hydrocarbons, wherein the reaction reduces NO to give N2; and valves and conduits configured to selectively channel exhaust from the intern...

이 특허에 인용된 특허 (21)

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이 특허를 인용한 특허 피인용횟수: 38

  1. Owens, Tracie L.; Leta, Daniel P.. Adsorbent-incorporated polymer fibers in packed bed and fabric contactors, and methods and devices using same. USP2017079713787.
  2. Caro, Sal; Ottsen, Henning; Powell, John. Air pollution control system for ocean-going vessels. USP2012128327631.
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  4. 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.
  5. Johnson, Robert A.; Deckman, Harry W.; Kelley, Bruce T.; Oelfke, Russell H.; Ramkumar, Shwetha. Apparatus and system for swing adsorption processes related thereto. USP20180910080991.
  6. 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.
  7. Nagavarapu, Ananda K.; Marshall, Bennett D.. Apparatus and system for swing adsorption processes related thereto. USP20190310220345.
  8. Nagavarapu, Ananda K.; Smith, Ransdall K.; Oelfke, Russell H.. Apparatus and system for swing adsorption processes related thereto. USP20180910080992.
  9. Tammera, Robert F.. Apparatus and system for swing adsorption processes related thereto. USP2017099751041.
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