Denitrification Activities of Mo-V-Ti Catalysts Prepared by Dipping Method at Low Temperature

摘要

Mo-V-Ti catalysts of low temperature denitrification were prepared by dipping method. In order to study the activity of selective catalytic reduction, the catalyst was placed in a fixed bed reactor. Industrial flue gas was simulated with cylinder gas. The experimental condition is NO: 500ppm, NH_3:500ppm, O_2:8%, SO_2:100ppm, N_2: equilibrium gas, space velocity: 36000h~(-1). Results indicate that the catalyst prepared by dipping method had good denitrification activity and sulfur resistance at low temperature. The optimum ratio of catalyst was 3V_2O_5-6MoO_3-91TiO_2 (wt %). The conversion efficiency of NO was 80-93%, and the conversion efficiency of SO_2 was less than 1% at 180-260°C.