Refractory exhaust filtering method and apparatus
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United States of America Patent
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Jul 28, 2009
Grant Date -
May 10, 2007
app pub date -
Jan 5, 2007
filing date -
Nov 7, 2005
priority date (Note) -
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Abstract
An apparatus for catalytically cleaning an exhaust gas, including receiving the exhaust gas in an inlet channel, blocking the exhaust gas in the inlet channel, diffusing the exhaust gas through a porous substantially fibrous nonwoven wall of the inlet channel, reacting the exhaust gas with at least one catalyst material to at least partially remove nitrous oxides, hydrocarbons and carbon monoxide therefrom, the at least one catalyst material being disposed on the porous wall, trapping particulate matter in the porous substantially fibrous nonwoven wall, receiving the diffused exhaust gas into an outlet channel, and transitioning the exhaust gas from the outlet channel to the atmosphere.
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