PFBC boiler combined cycle power generation system

(57) Abstract: PFBC boiler combined cycle power generation system includes a gas turbine (56) and the internal circulating fluidized-bed boiler (2). Fuels such as coal or oil coke is combusted in a fluidized bed under pressure, high temperature combustion gas pressure produced by the combustion of fuel to generate electric power is introduced into the gas turbine (56). PFBC boiler combined cycle power generation system, a higher temperature dust collector for removing dust from the combustion gases (54), the control unit keeping the temperature of the combustion gas at the inlet of the high-temperature dust collector (54) to a predetermined value and a (T