The Research On The Activity Of Catalysts And Catalytic Reaction For SCR DeNOx

Selective Catalytic Reduction (SCR) is a major commercial technology for NOx removal in power plants. The reaction mechanism of SCR is rather complex. In this paper, catalytic reactions were simulated for V2O5-WO3/TiO2 and V2O5/C catalysts, then NO removal efficiencies were calculated. The impact of operating conditions such as reaction temperature, ammonia-nitrogen molar ratio and resident time in the catalyst bed layer on catalytic reactions were studied. As a result, optimal operating conditions were known and we can provide a reference for SCR optimal running in power plants.Flue gases from power plant were simulated and the activity of SCR catalysts was tested after running for 19870 hours. In addition, the conversion rate for SO2 to SO3 was tested. Referring to the designing standards, we can make a reasonable forecast to the service life of the catalysts, and it was able to plan a timely replacement or regeneration for SCR catalysts, which provided a guide for SCR safe and economic operation.