Electric Power Research Institute Incorporated

John G Sotter

Lawrence J Muzio

John K Arand

Method for reducing NO.sub.x in combustion effluents comprising introducing urea at elevated temperatures in the presence of oxygen, either as a solid or solution in amounts sufficient to reduce the NO.sub.x concentration. Conveniently, the urea may be introduced as a solid powder or as a solution in a hydroxylic solvent, at temperatures in excess of 1300.degree. F. and in the presence of at least 0.1 volume percent oxygen. This invention was made under contract with or supported by the Electric Power Research Institute.

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Mission Viejo, CA, United States of America

John G Sotter