| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a reproduction method easy to wash out impurities and unnecessary to re-activate active ingredients, in reproducing the catalyst to which aluminum sulfate is added as an active improver. <P>SOLUTION: In a reproduction method for used denitration catalysts which contain titanium oxide, oxides of vanadium, oxides of tungsten or molybdenum, and aluminum sulfate as main ingredients, the reproduction method for used denitration catalysts is characterized by impregnating the used denitration catalyst with water in advance, heat-treating it at ≥50°C and ≤100°C to hydrolyse the aluminum sulfate in the catalyst, and then washing the catalyst with water. <P>COPYRIGHT: (C)2013,JPO&INPIT |
