Process for controlling acid gas emissions in power plant flue gases
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United States of America Patent
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Oct 22, 1991
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app pub date -
Sep 17, 1990
filing date -
Oct 18, 1989
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Abstract
An in-furnace sorbent slurry injection process for the simultaneous control of SO.sub.2 and NO.sub.x from power plant flue gases is described. An aqueous slurry of limestone or dolomite-doped limestone and a nitrogenous progenitor compound is injected into the furnace at temperatures ranging between 900.degree. C. and 1350.degree. C. Under optimized operating conditions, with urea selected as the nitrogenous progenitor, about 80% of the SO.sub.2 and 90% of the NO.sub.x are simultaneously removed.
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