| 摘要 |
PURPOSE:To render denitrifying performance comparable to that of the conventional catalyst and to reduce the rate of oxidation of SO2 by incorporating II-type anhydrous gypsum, titanium oxide and the oxide of Sb, Zn, etc., in specified ratios and further incorporating the oxide of V, W, etc. CONSTITUTION:This catalyst for denitrification of stack gas used to remove NOx in exhaust gas contains >=70wt.%, in total, of II-type anhydrous gypsum (A), titanium oxide (B) and the oxide (C) of Sb, Zn, Al, etc., in 0.01-0.4 weight ratio of B/(A+B+C) and 0.005-0.4 weight ratio of C/(A+B+C) and further contains the oxide of V, W, Fe, Cu, etc. This catalyst has denitrifying performance comparable to that of the conventional catalyst and is very effective in reducing the rate of oxidation of SO2. |
