CFB boiler is one type of the power plant boiler, fuel will mix with ash content in certain proportions to combust in fluidized status. The outlet of the furnace is equipped with the gas and solid
material separator. The small particle in the flue gas out of the furnace shall be sent back to furnace to combust again after separating by the separator. Fule type applicable for CFB boiler is
widely, it can be used to fire the fuel with low calorific value and high ash content and is widely used in any kind power generation field.