| 摘要 |
A denitration catalyst formulation for effectively inhibiting the oxidation of sulfur dioxide and a preparation method therefor. Adding ammonium metavanadate and ammonium paratungstate into an oxalic acid solution, stirring to obtain a solution, then adding barium nitrate, magnesium nitrate, strontium nitrate or a solution prepared from the mixture of barium nitrate, magnesium nitrate, strontium nitrate into a mixed solution of titanium dioxide and silica sol, soaking, stirring to obtain a suspension, and then pouring the solution into the suspension with the same volume, heating them after soaking and stirring, continuously stirring to obtain a paste and drying, finally grinding the dried block and calcining under air atmosphere to obtain the catalyst. The catalyst is used for reducing the oxidation rate of sulfur dioxide under the condition of sulfur dioxide gas with high concentration, and can be widely applied to the NOx catalytic reduction of high-sulphur coal-fired power plants and industry boilers. |
