SURFACE DEPOSITION-TYPE HONEYCOMB CATALYST FOR FLUE GAS DENITRIFICATION AND PREPARATION METHOD THEREOF

摘要

Provided are a surface deposition-type honeycomb catalyst for flue gas denitrification and a preparation method thereof, the catalyst comprising a honeycomb aggregate taking clay, coal ash or slag as a matrix, TiO2 as an active carrier, and WO3 and V2O5 as active ingredients loaded on the TiO2 active carrier and evenly distributed in the honeycomb aggregate; the catalyst comprising, by weight, 60 to 80% of clay, coal ash or slag, 13 to 33% of TiO2, 1 to 5% of WO3 and 0.1 to 2% of V2O5; the preparation method comprising: highly dispersing the nanometer catalyst particles in the porous channels and on the outer surfaces of the formed catalyst in a burn-loss transition carrier transferring mode. The utilization efficiency and catalytic activity of the catalyst active ingredients obtained using the method are greatly improved.