Stationary Emission Control: SNCR and SCR Processes

This lecture covers the principles of Selective Non-Catalytic Reduction (SNCR) and Selective Catalytic Reduction (SCR) processes for stationary emission control. It explains the radical reactions involved in SNCR with urea and NH3, the temperature windows for NH3 conversion, and the structure of SNCR installations. Additionally, it discusses SCR catalyst formulation, the use of urea as a reducing agent, and the challenges and advantages of SCR systems. The lecture also addresses the side reactions of SCR processes, such as nitrogen and sulfur formation, and the impact of cell density on DeNOx and N2O formation in WWT catalysts.