Selective gas-phase nox reduction in gas turbines
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United States of America Patent
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Apr 6, 1993
Grant Date -
N/A
app pub date -
Apr 3, 1991
filing date -
Apr 3, 1991
priority date (Note) -
Expired
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Abstract
Nitrogen oxides are reduced in gas turbines by selective, gas-phase reaction with urea. This is enabled in a preferred embodiment by injecting urea as an aqueous solution of droplet sizes and concentration effective to assure selective gas phase reactions to result in NO.sub.x reduction. The aqueous solution can also be employed to reduce NO.sub.x by reducing the flame temperature. Desirably, the injection parameters are controlled to also minimize ammonia production.
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