BIOMASS-MIXED-FIRING PULVERIZED COAL FIRED BOILER AND OPERATION METHOD OF THE BOILER.

摘要

A biomass-mixed-firing pulverized coal fired boiler comprising a furnace for mixed-fuel firing of pulverized coal and biomass fuel, a pulverized coal burner for supplying pulverized coal to the furnace, a biomass burner for supplying biomass fuel to the furnace, a biomass mill for crushing biomass fuel supplied to the biomass burner, a dry clinker treatment device provided under the furnace and having a clinker conveyer for conveying bottom ash discharged from the furnace, and a combustion air supply means for combusting unburnt biomass fuel contained in the bottom ash on the clinker conveyer by supplying combustion air toward the bottom ash on the clinker conveyer.