SCR involves the use of ammonia (NH 3) as a reducing agent to react with NO x and yield harmless molecular nitrogen (N 2) and liquid vapor (H 2 O). This reaction occurs with the involvement of Carrier air heating system for SCR - Babcock & Wilcox U.S. Pat. No. 5,296,206 describes a heat exchanger being used to heat the diluted air while extracting heat from the flue gas between the boiler exit and the SCR chamber inlet. The heated dilution air is then passed to a location outside the flue gas path where it is used to vaporize the ammonia entering the gas duct through the AIG.
The CONCORD SCR Abatement System incorporates a primary heat exchanger for energy conservation. Also a pre-heat burner for even catalyst temperature control, NOx abatement catalyst choices designed to convert oxides of nitrogen (NO + NO2) in Selective Catalytic Reduction (SCR)SCR (selective catalytic reduction). It combines these two tested technologies in one system. Nitrogen oxides and carbon compounds can be simultane-ously reduced with the DeCONOx process. The breakdown of NO x takes place through catalytic reduction using ammonia and the breakdown of carbon compounds takes place through combustion
The invention relates to a heat exchanger ( 50 ) for a dosing unit of an SCR (selective catalytic reduction) exhaust gas treatment device ( 10 ), wherein an adjustable volume of a fluid can be Wheelabrator Selective Catalytic ReductionSelective Catalytic Reduction (SCR) technology is designed to provide reliable high removal rates of NOX The SCR system is comprised of three main parts, ammonia supply, ammonia injection and catalyst. Ammonia injection comprises an injection grid and static mixer combination. Patented In Duct Heat Exchanger (IDHX) for efficiency
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