Denitrification activities of Mg-Mo-V-Ti catalysts prepared by dipping method at low temperature

Mg-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. Results indicate that the 0.1wt% content of MgO catalyst has good performance on denitration activity and sulfur resistance. The effects of oxygen content, space velocity and reaction temperature on the activity of the 0.1MgO-6MoO₃ -3V₂ O₅ -TiO₂ wt% catalyst were investigated. With the increase of oxygen concentration, the denitrification efficiency increases when the oxygen concentration is less than 8%. When the oxygen content is greater than 8%, the denitrification efficiency is almost the same. The denitrification efficiency decreases with the increase of space velocity. The removal efficiency of NO 0.1MgO-6MoO₃ -3V₂ O₅ -TiO₂ wt% catalyst over increases first and then becomes stable with the increase of temperature, and the conversion efficiency of SO₂ is less than or equal to 2.2% at 120~240 °C.