HONEYCOMB CATALYST FOR COAL AND BIOMASS MIXED COMBUSTION EXHAUST GAS TREATMENT, PRODUCTION METHOD THEREOF, AND COAL AND BIOMASS MIXED COMBUSTION EXHAUST GAS TREATMENT METHOD USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a honeycomb catalyst for coal and biomass mixed combustion exhaust gas treatment hardly deactivating even when being used for mixed combustion of a biomass fuel containing much calcium.SOLUTION: There is provided a honeycomb catalyst for coal and biomass mixed combustion exhaust gas treatment comprising an inorganic oxide carrier containing Ti, Si and W, and a metal component containing at least one kind selected from between V and Mo. In the honeycomb catalyst for coal and biomass mixed combustion exhaust gas treatment having deposit holes each used as a physical deposition hole for a salt, and each having the width of 4-20 μm and the depth of 20-300 μm, the proportion of sum total of each deposit hole opening part area to an inner wall surface area of catalyst is 5-10%, and a difference (SA-SA) between a specific surface area (SA) by a BET method and a specific surface area (SA) shown by catalyst pores of 5 nm-5 μm by a mercury penetration porosimetry method is in the range of 15-25 m/g.SELECTED DRAWING: Figure 1