Chromium-containing flue gas denitration catalyst and preparation method thereof

The invention discloses a chromium-containing flue gas denitration catalyst and a preparation method thereof. The chromium-containing flue gas denitration catalyst is composed of catalyst powder, a cocatalyst and a catalyst carrier. The flue gas denitration catalyst is prepared by the following steps: step 1, preparing a catalyst carrier; 2, mixing the catalyst powder, a cocatalyst and a catalystcarrier according to a mass ratio of 6-8:0.3:100, adding the obtained mixture into a stirrer, mixing the components, and extruding the mixture to prepare a catalyst pug; and 3, putting the catalyst pug obtained in the step 2 into a forming machine, extruding the catalyst pug into a honeycomb-shaped green body by virtue of a mold, and respectively drying the extruded material for 10 hours at the temperature of 60-80 DEG C, for 2 hours at the temperature of 100-120 DEG C and for 2 hours at the temperature of 200-250 DEG C and roasting the material for 1 hour at the temperature of 600-700 DEG C,so as to obtain the chromi