Impactor for selective catalytic reduction system
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United States of America Patent
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Aug 5, 2003
Grant Date -
Apr 17, 2003
app pub date -
Oct 17, 2001
filing date -
Oct 17, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A selective catalytic reduction system for engine exhaust injects a solution comprising a source of ammonia, preferably an aqueous urea solution, or other ammonia solution, to preferably evaporate, decompose and hydrolyze to produce ammonia to react with and reduce NO.sub.x in the exhaust. An inertial impactor in the housing between the injector and the catalyst is impacted by the solution droplets and holds same until evaporated, decomposed and hydrolyzed to ammonia.
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