Method of combustion for fluidized bed incinerators

Abstract From the Canadian patent

A method of controlling the combustion in the fluidized bed for fluidized bed incinerators for disposing of refuse such as municipal wastes is disclosed. According to this invention method, a fluidized bed in which to burn the refuse is formed out of the refuse such as municipal wastes and a fluidlzlng medium by the primary air; the pyrolysis gas generated in said combustion is burnt with the secondary air in the upper or the freeboard, space of the furnace body; the gas generated in said secondary combustion is discharged out of the furnace body as an exhaust; and a part of said discharged exhaust gas is returned to the furnace body, thus achieving effective control over drying combus-, …