F - Mech Eng,Light,Heat,Weapons – 01 – N
Patent
F - Mech Eng,Light,Heat,Weapons
01
N
F01N 3/20 (2006.01) B01D 53/62 (2006.01) B01D 53/94 (2006.01) B01J 20/18 (2006.01) F01N 3/08 (2006.01) F01N 3/24 (2006.01) F01N 3/28 (2006.01)
Patent
CA 2146244
A method and apparatus in accordance with the invention is described which comprises treating an engine (12) exhaust gas stream containing hydrocarbons and other pollutants. The method of this invention comprises the steps of flowing the exhaust gas stream through a catalytic member comprising a monolith body (16) having a first catalyst zone (18) and a second catalyst zone (28) therein to contact a catalyst in a first catalyst zone (18) to convert at least some of the pollutants in the exhaust gas stream into innocuous products. The exhaust gas stream is then discharged from the catalytic member and flowed through an adsorbent zone (24) to adsorb at least some of the hydrocarbon pollutants with an adsorbent composition. The exhaust gas stream is then discharged from the adsorbent zone (24) and flowed to the second catalyst zone (28) to convert at least some of the pollutants into innocuous products. The exhaust gas stream, so treated, is then discharged to the atmosphere through suitable dis- charge means. A preferred adsorbent is a zeolite, having a relatively high silica to alumina ratio and a low relative Bronsted acidity. The preferred adsorbent compositions comprise Beta zeolites. An oxidant such as air (32) may be added to the exhaust gas stream at a point upstream of the second catalyst zone.
Burk Patrick Lee
Dettling Joseph Charles
Heck Ronald Marshall
Hochmuth John Karl
Steger John Joseph
Sim & Mcburney
The Engelhard Corporation
LandOfFree
Method and apparatus for treating an engine exhaust gas stream does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for treating an engine exhaust gas stream, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for treating an engine exhaust gas stream will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1775244