Method of removing nitrogen oxides from a flue gas stream
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United States of America Patent
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Mar 27, 1990
Grant Date -
N/A
app pub date -
Sep 26, 1988
filing date -
Sep 26, 1987
priority date (Note) -
Expired
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Abstract
In the selective reduction of nitrogen oxides of flue gases with ammonia, the ammonia is added as ammonia water upstream of the reduction zone. Residual gas phase ammonia and ammonia compounds collected with the flyash serve as recycled ammonia sources and ammonia is formed from them and, in an ammoniacal solution, is added to the ammonia water supply vessel.
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