... variety of low-grade fuel. Heat Fluidized Bed Boilers Introduction Fluidized Bed Boilers with fluidized bed combustion boiler referred the 1980s developed ... ) can fire normal and stable combustion in a fluidized bed furnace, this boiler energy shortages and rising fuel ... -broken into 8mm particles continuously fed into the fluidized bed coal feeder, adjustable speed, constantly churning strongly burning ...