FLUIDIZED BED PARTIAL COMBUSTION FURNACE OPERATING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a fluidized bed partial combustion furnace operating method for stably maintaining a good fluidized condition by sensitively detecting a poorly fluidized condition and selecting proper operating conditions. SOLUTION: Fuel is partially burnt while fluidizing fluid medium and the fuel with air introduced into a furnace. Waste material fuel is supplied to the fluidized bed combustion furnace 1, and a computing unit 14 detects the rate of a bed pressure drop fluctuation band which is obtained by dividing the fluctuation band of a bed pressure drop during operation by the fluctuation band of a bed pressure drop before supplying the waste material fuel into the furnace. A controller 15 controls the amount of the waste material fuel to be supplied into the fluidized bed combustion furnace 1, the amount of preheated air and the amount of water to be added to the preheated air so that the rate of the detected bed pressure drop fluctuation band is in a preset range. COPYRIGHT: (C)2006,JPO&NCIPI