Catalytic/non-catalytic combination process for nitrogen oxides reduction
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United States of America Patent
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Aug 18, 1992
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N/A
app pub date -
Dec 12, 1990
filing date -
Sep 12, 1989
priority date (Note) -
Expired
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Abstract
A process for reducing nitrogen oxides in a combusiton effluent is presented. The process involves introducing a nitrogenous treatment agent into the effluent under conditions effective to create a treated effluent having reduced nitrogen oxides concentration such that ammonia is present in the treated effluent; and then contacting the treated effluent under conditions effective to reduce the nitrogen oxides in the effluent with a nitrogen oxides reducing catalyst.
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