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특허 상세정보

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Exhaust gas cleaner and method for removing nitrogen oxides

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B01J-008/02   
미국특허분류(USC) 423/239.1 ; 423/240S ; 423/245.3 ; 423/247 ; 502/347 ; 502/305 ; 502/317 ; 502/312 ; 502/353
출원번호 US-0295012 (1994-08-24)
우선권정보 JP0234200 (1993-08-26)
발명자 / 주소
  • Miyadera Tatsuo,JPX
  • Yoshida Kiyohide,JPX
출원인 / 주소
  • KOCAT Inc., KRX
대리인 / 주소
    Browdy and Neimark
인용정보 피인용 횟수 : 29  인용 특허 : 8
초록
▼

Nitrogen oxides are removed from an exhaust gas containing nitrogen oxides and oxygen in a proportion larger than its stoichiometric proportion relative to unburned components in the exhaust gas, by (i) disposing an exhaust gas cleaner in a flow path, the exhaust gas cleaner comprising a first catalyst composed of 0.2-20 parts by weight (on a metal basis) of silver or silver oxide supported on a porous inorganic oxide, and a second catalyst composed of 1-50 parts by weight (on an oxide basis) of tungsten and/or vanadium supported on a porous inorganic ox...

대표
청구항
▼

[ What is claimed is:] [1.]1. A method for removing nitrogen oxides from an exhaust gas containing oxygen in a proportion larger than the stoichiometric proportion of said oxygen relative to unburned components in said exhaust gas, comprising the steps of:(i) disposing an exhaust gas cleaner in a flow path of said exhaust gas, said exhaust gas cleaner consisting essentially of a first catalyst consisting essentially of 0.2-20 parts by weight on a metal basis of silver or silver oxide supported on 100 parts by weight of a porous inorganic oxide selected f...

이 특허에 인용된 특허 (8)

  1. Domesle Rainer (Maintal DEX) Engler Bernd (Hanau DEX) Koberstein Edgar (Alzenau DEX) Vlker Herbert (Hanau DEX), Apparatus for the purification of exhaust gas from diesel motors.
  2. Hindin Saul G. (Mendham NJ) Dettling Joseph C. (Jackson NJ), Compositions and methods for high temperature stable catalysts.
  3. Muramatsu Gyo (Kumagaya JPX) Yoshida Kiyohide (Kumagaya JPX) Sumiya Satoshi (Kumagaya JPX) Abe Akira (Kumagaya JPX), Exhaust gas cleaner and method of cleaning exhaust gas.
  4. Muramatsu, Gyo; Abe, Akira; Yoshida, Kiyohide; Sumiya, Satoshi; Matsumura, Nobuyuki; Takahashi, Yoshikazu, Exhaust gas cleaner and method of cleaning exhaust gas.
  5. Subramanian Somasundaram (Melvindale MI) Kudla Robert J. (Warren MI) Chattha Mohinder S. (Northville MI), Exhaust treating system for lean-burn CNG engine.
  6. McCabe Robert W. (Lathrup Village MI) Mitchell Patricia J. (Troy MI), Method of simultaneous oxidation of carbon monoxide and unburned fuel in methanol vehicle exhaust.
  7. Addiego William P. (Corning NY) Swaroop Srinivas H. (Painted Post NY) Williams Jimmie L. (Painted Post NY) Wusirika Raja R. (Painted Post NY), Multi-stage TWC system.
  8. Nishikawa Eiichiroh (Ohi JA) Itoh Takuji (Sayama JA) Kamiyama Setsuo (Ohi JA), Process for reducing nitrogen oxides from flue gas.

이 특허를 인용한 특허 (29)

  1. Golden, Stephen J.; Iretskaya, Svetlana, Ammonia SCR catalyst and method of using the catalyst.
  2. Golden, Stephen J.; Iretskaya, Svetlana, Ammonia SCR catalyst and method of using the catalyst.
  3. Viola, Michael B., Apparatus and method to inject a reductant into an exhaust gas feedstream.
  4. Malyala, Rajashekharam V.; Golden, Stephen J., Catalyst and method for reducing nitrogen oxides in exhaust streams with hydrocarbons or alcohols.
  5. Hancu, Dan; Donald, Jr., Whisenhunt Wayne; Benjamin, Winkler Hale; Benjamin, Wood Rue; Hrishikesh, Keshavan, Catalyst and method of manufacture.
  6. Lewis, Larry Neil; Winkler, Benjamin Hale; Hancu, Dan; Norton, Daniel George; Mhadeshwar, Ashish Balkrishna, Catalyst and method of manufacture.
  7. Lewis, Larry Neil; Winkler, Benjamin Hale; Hancu, Dan; Norton, Daniel George; Mhadeshwar, Ashish Balkrishna, Catalyst and method of manufacture.
  8. Yin, Ming; Lewis, Larry Neil; Siclovan, Oltea Puica; Hancu, Dan; Winkler, Benjamin Hale; Norton, Daniel George; Mhadeshwar, Ashish Balkrishna, Catalyst and method of manufacture.
  9. Hancu,Dan; Male,Jonathan Lloyd; Redline,Jennifer Kathleen; Buddle,Stanlee Teresa; Rocha,Teresa Grocela; Palmatier,Alison Liana; Wood,Benjamin Rue; Rijssenbeek,Job Thomas, Catalyst system and method for the reduction of NO.
  10. Fisher, Galen B.; DiMaggio, Craig L.; Rahmoeller, Ken M.; Sellnau, Mark C., Dual catalyst NOx reduction system for exhaust from lean burn internal combustion engines.
  11. Bono, Robert; Malyala, Rajashekharam V.; Miller, Alec; Golden, Stephen J., Emission reduction method for use with a heat recovery steam generation system.
  12. Suzuki, Norihiko; Mori, Takeshi; Hosoe, Hiroki; Ishizaki, Keita, Exhaust gas cleaner.
  13. Malyala, Rajashekharam; Iretskaya, Svetlana; Golden, Stephen J., High temperature ammonia SCR catalyst and method of using the catalyst.
  14. Parrish, Clyde F., High temperature decomposition of hydrogen peroxide.
  15. Parrish, Clyde F., High temperature decomposition of hydrogen peroxide.
  16. Parrish, Clyde F., High temperature decomposition of hydrogen peroxide.
  17. Cho, Byong K.; Baik, Joon-Hyun, Hybrid catalyst for NOx reduction using fuel hydrocarbons as reductant.
  18. Lewis, Larry Neil; Whisenhunt, Jr., Donald Wayne; Hancu, Dan; Mhadeshwar, Ashish Balkrishna; Winkler, Benjamin Hale; Norton, Daniel George; Siclovan, Oltea Puica; Yin, Ming, Manufacture of catalyst compositions and systems.
  19. Viola,Michael B., Method and apparatus to control injection of a reductant into an exhaust gas feedstream.
  20. Schmieg, Steven J.; Blint, Richard J.; Deng, Ling; Viola, Michael B.; Lee, Jong-Hwan, Method and apparatus to selectively reduce NO.
  21. Siclovan, Oltea Puica; Norton, Daniel George; Lewis, Larry Neil; Hancu, Dan; Bao, Xiaoying; Burch, Robert; Hardacre, Christopher; Chansai, Sarayute, Method for preparing a catalyst composition suitable for removing sulfur from a catalytic reduction system.
  22. Hancu, Dan; Winkler, Benjamin Hale; Wood, Benjamin Rue; Norton, Daniel George, Multi-component catalyst system and method for the reduction of NO.
  23. Ramachandran, Bala; Choi, Sukwon; Gartside, Robert J., Olefin double bond isomerization catalyst with high poison resistance.
  24. Park, Paul Worn; Hester, Virgil Raymond; Ragle, Christie Susan; Boyer, Carrie L., Silver doped catalysts for treatment of exhaust.
  25. Park,Paul Worn; Boyer,Carrie L., Silver doped catalysts for treatment of exhaust.
  26. Kass,Michael Delos; Graves,Ronald Lee; Storey,John Morse Elliot; Lewis, Sr.,Samuel Arthur; Sluder,Charles Scott; Thomas,John Foster, Stripping ethanol from ethanol-blended fuels for use in NOSCR.
  27. Lewis, Larry Neil; Hancu, Dan; Siclovan, Oltea Puica; Yin, Ming, Templated catalyst composition and associated method.
  28. Yin, Ming; Lewis, Larry Neil; Hancu, Dan; Siclovan, Oltea Puica, Templated catalyst composition and associated method.
  29. Koermer, Gerald, Treatment of power utilities exhaust.

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