Process for operating a fluidized bed burner

Abstract From the Canadian patent

The disclosure describes a process and a device for operating a fluidized bed burner in which fuels homogeneously mixed with inert bed materials are burned in the fluid bed. According to the invention the mixture, of fuel and inert materials is prepared outside the fluidized bed and the mixture is thereafter introduced into the fluidized bed. The device includes a firebox containing the fluidized bed, a tuyère floor for the introduction of fuels and a carrier gas for the fluidized bed as well as outlets for combustion gases and ashes. The device comprises at least one ash withdrawal channel which is connected at one end at the upper area of the fluidized bed, the other end of the withdrawal …