CIRCULATING FLUIDIZED BED BOILER

摘要

Disclosed is a circulating fluidized bed combustion boiler capable of controlling the amount of heat recovered from solid particles separated from exhaust gas by a separator. The circulating fluidized bed combustion boiler includes: a combustion furnace where fluidized fuel is combusted; the separator receiving the exhaust gas generated by the combustion of the fluidized fuel and the solid particles from the combustion furnace and then separating the solid particles from the exhaust gas; and a return system returning the solid particles separated from the exhaust gas by the separator to the combustion furnace. The return system includes a heat exchange unit for recovering the heat from the solid particles supplied from the separator, and a return unit returning the solid particles cooled by the heat exchange unit to the combustion furnace. The circulating fluidized bed combustion boiler of the present invention additionally includes a control unit controlling the amount of the heat recovered from the solid particles by the heat exchange unit.