| 摘要 |
Disclosed is a circulating fluidized bed boiler capable of controlling the amount of heat recovered from solid particles which are separated from flue gas by the separator. The circulating fluidized bed boiler according to the present invention comprises: a combustion furnace in which fuel is fluidized and burned; the separator separating the solid particles and the flue gas after receiving the flue gas and the solid particles from the combustion furnace, generated by combustion of fuel; and a return system returning the solid particles, which are separated from the flue gas by the separator, to the combustion furnace, wherein the flue gas is generated by the combustion of the fuel. The return system includes: a heat exchange part in which a cooling medium and the solid particles supplied from the separator exchange heat with each other; a gas supply part supplying a fluidizing gas into the heat exchange part; and a return pipe providing a path through which the solid particles cooled in the heat exchange part is returned to the combustion furnace. The circulating fluidized bed boiler according to the present invention further includes a control part controlling the amount of the cooling medium supplied to the heat exchange part depending on the amount of heat exchange between the cooling medium and the solid particles. |
