Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...
Reexamination Certificate
2006-09-01
2010-06-29
Denion, Thomas E (Department: 3748)
Power plants
Internal combustion engine with treatment or handling of...
By means producing a chemical reaction of a component of the...
C060S284000, C060S285000, C060S295000, C060S301000, C060S300000
Reexamination Certificate
active
07743602
ABSTRACT:
A method and apparatus for catalytically processing a gas stream passing therethrough to reduce the presence of NOxtherein, wherein the apparatus includes a first catalyst composed of a silver-containing alumina that is adapted for catalytically processing the gas stream at a first temperature range, a second catalyst composed of a copper-containing zeolite located downstream from the first catalyst, wherein the second catalyst is adapted for catalytically processing the gas stream at a lower second temperature range relative to the first temperature range, a hydrocarbon compound for injection into the gas stream upstream of the first catalyst to provide a reductant, and a reformer for reforming a portion of the hydrocarbon compound into H2and/or oxygenated hydrocarbon for injection into the gas stream upstream of the first catalyst. The second catalyst is adapted to facilitate the reaction of reducing NOx into N2, whereby the intermediates are produced via the first catalyst reacting with NOx and hydrocarbons.
REFERENCES:
patent: 4934142 (1990-06-01), Hayashi et al.
patent: 5223236 (1993-06-01), Inoue et al.
patent: 5425332 (1995-06-01), Rabinovich et al.
patent: 5437250 (1995-08-01), Rabinovich et al.
patent: 5443803 (1995-08-01), Mizuno et al.
patent: 5599758 (1997-02-01), Guth et al.
patent: 5714130 (1998-02-01), Saito et al.
patent: 5727385 (1998-03-01), Hepburn
patent: 5741468 (1998-04-01), Saito et al.
patent: 5776423 (1998-07-01), Feeley et al.
patent: 5780002 (1998-07-01), Miyadera et al.
patent: 5878567 (1999-03-01), Adamczyk et al.
patent: 5882607 (1999-03-01), Miyadera et al.
patent: 5908806 (1999-06-01), Kharas
patent: 5910097 (1999-06-01), Boegner et al.
patent: 5921076 (1999-07-01), Krutzsch et al.
patent: 5948377 (1999-09-01), Sung
patent: 5980844 (1999-11-01), Kharas
patent: 6029623 (2000-02-01), Weissman et al.
patent: 6125629 (2000-10-01), Patchett
patent: 6176078 (2001-01-01), Balko et al.
patent: 6245307 (2001-06-01), Inui et al.
patent: 6260353 (2001-07-01), Takahashi
patent: 6314722 (2001-11-01), Matros et al.
patent: 6363716 (2002-04-01), Balko et al.
patent: 6475350 (2002-11-01), Palekar et al.
patent: 6560958 (2003-05-01), Bromberg et al.
patent: 6592833 (2003-07-01), Kharas
patent: 6679051 (2004-01-01), van Nieustadt et al.
patent: 6703343 (2004-03-01), Park
patent: 6706660 (2004-03-01), Park
patent: 6718753 (2004-04-01), Bromberg et al.
patent: 6758035 (2004-07-01), Smaling
patent: 6810658 (2004-11-01), Kaupert et al.
patent: 6823662 (2004-11-01), Yamamoto et al.
patent: 6843054 (2005-01-01), Taylor, III et al.
patent: 6846471 (2005-01-01), Hotta et al.
patent: 6895746 (2005-05-01), Buglass et al.
patent: 6957528 (2005-10-01), Cho
patent: 6959542 (2005-11-01), Taylor, III et al.
patent: 6968678 (2005-11-01), Le Leux et al.
patent: 7063642 (2006-06-01), Hu et al.
patent: 7093428 (2006-08-01), LaBarge et al.
patent: 2001/0031699 (2001-10-01), Matsumoto et al.
patent: 2002/0051742 (2002-05-01), Hotta et al.
patent: 2002/0091061 (2002-07-01), Labarge et al.
patent: 2003/0047146 (2003-03-01), Daniel et al.
patent: 2003/0047147 (2003-03-01), Daniel et al.
patent: 2003/0089337 (2003-05-01), Cohn et al.
patent: 2003/0118960 (2003-06-01), Balmer-Millar et al.
patent: 2003/0170154 (2003-09-01), Inman et al.
patent: 2004/0050345 (2004-03-01), Bauer
patent: 2004/0099226 (2004-05-01), Bromberg et al.
patent: 2004/0126286 (2004-07-01), DeRuyter
patent: 2004/0146458 (2004-07-01), Weissman et al.
patent: 2004/0187483 (2004-09-01), Dalla Betta et al.
patent: 2004/0235651 (2004-11-01), Uenishi et al.
patent: 2005/0229872 (2005-10-01), Lange
patent: 2005/0247049 (2005-11-01), Kaboord et al.
patent: 2006/0112678 (2006-06-01), Kaboord et al.
patent: 2006/0286012 (2006-12-01), Socha et al.
patent: 2007/0059223 (2007-03-01), Golunski et al.
patent: 0702 997 (1996-03-01), None
patent: 0 730 900 (1996-09-01), None
patent: 0 971 102 (2000-01-01), None
patent: 1 094 206 (2001-04-01), None
patent: 1 132 585 (2001-09-01), None
patent: 05103953 (1993-04-01), None
patent: 06238169 (1994-08-01), None
patent: 07194973 (1995-08-01), None
patent: 09057064 (1997-03-01), None
patent: 09085057 (1997-03-01), None
patent: 10328567 (1998-12-01), None
patent: WO 00/64566 (2000-11-01), None
patent: WO 2005/016496 (2005-02-01), None
Shigeo Satokawa et al.; “Promotion Effect of H2On The Low Temperature Activity Of The Selective Reduction Of NO By Light Hydrocarbons Over Ag/A12O3”; www.sciencedirect.com; Elsevier Applied Catalysis B: Environmental 42 (2003), Aug. 30, 2002; pp. 179-186.
M. Richter et al.; “The Effect Of Hydrogen On The Selective Catalytic Reduction of NO In Excess Oxygen Over Ag/A12O3”; www.sciencedirect.com; Elsevier Applied Catalysis B: Environmental 51 (2004), Apr. 24, 2004; pp. 261-274.
John Cavataio and Erdogan Gulari; “Selective Catalytic Reduction of NOxOver Silver and Platinum Alumina Catalysts”; CLEERS Workshop; University of Michigan, Ford Motor Company; May 2, 2002; pp. 1-31.
Kari Eränen et al.; “Continuous reduction of NO with Octane Over a Silver/Alumina Catalyst in Oxygen-Rich Exhaust Gases: Combined Heterogeneous and Surface-Mediated Homogeneous Reactions”; www.sciencedirect.com; Academic Press, Journal of Catalysis 219 (2003) Apr. 18, 2003; pp. 25-40.
Kalle Arve, et al.; “Kinetic Considerations of H2Assisted Hydrocarbon Selective Catalytic Reduction of NO over Ag/A12O31. Kinetic Behavior”; www.sciencedirect.com Applied Catalysis A: General 303 (2006) Mar. 9, 2006; pp. 96-102.
Rappe et al., “Combination of low and high temperature catalytic materials to obtain broad temperature coverage for plasma-facilitated NOx reduction,” Catalysis Today 89 (Feb. 3, 2004), pp. 143-150.
Kalyanaraman Mohan
Park Paul W.
Ragle Christie S.
Bogue Jesse
Caterpillar Inc.
Denion Thomas E
ExxonMobil Research And Engineering Co.
Water Kenneth
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