Selective non-catalytic reduction
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Selective Non Catalytic Reduction (SNCR) is a method for reducing nitrogen oxide emissions in conventional power plants that burn biomass and coal. The process involves injecting either ammonia or urea into the firebox of the boiler at a location where the flue gas is between 1600 oF and 2100 oF to react with the nitrogen oxides formed in the combustion process. The resulting product of the chemical reaction is elemental nitrogen (N2), carbon dioxide (CO2), and water (H2O).
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