CFBC Boiler

The CETHAR CFB boiler operates on the circulating bed principle. At high fluidizing velocities (4 to 6 m/s) part of the bed material becomes entrained and is carried through the combustion chamber with the flue gases. The coarser entrained particles are separated in awater-cooled 'hot loop' cyclone separatorand returned via a loop seal back to the bed. Finest fly ash is carried through the boiler convection sections and separated from the flue gases in a dust collection system.Fuel is fed into the fluidized bed via gravimetric or volumetric feeders either through the front wall and / or rear wall. Combustion takes place in the bed at about 870 - 900