BUBBLING FLUIDIZED-BED COMBUSTION FURNACE AND IN-BED TEMPERATURE CONTROL METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a bubbling fluidized-bed combustion furnace allowing control of an in-bed temperature within a desired temperature range with combustible waste having a variable heating value as fuel with hardly requiring fuel except the combustible waste, and allowing control of a combustion amount according to a load instruction with a main steam pressure and a main steam temperature maintained, and to provide an in-bed temperature control method therefor. SOLUTION: This bubbling fluidized-bed combustion furnace has: a fluidized bed 12 fluidizing particles by fluidizing air, and combusting the fuel inside it and above it; an in-bed fuel supply means 14 directly supplying the fuel into the fluidized bed; an above-bed fuel supply means 16 supplying the fuel to the upper face of the fluidized bed; a steam generation means 18 generating water vapor by heat generated in the fluidized bed; and a fuel controller 20 controlling the in-bed temperature within the desired temperature range while maintaining the pressure and the temperature of the water vapor generated by the steam generation mean, and controlling the combustion amount according to the load instruction. COPYRIGHT: (C)2005,JPO&NCIPI