Patent ID: 8028511

Claim:
An integrated gasification combined cycle power generation plant comprising: gasifying furnace to generate a flammable gas by causing a gasifying agent which is a gas and solid fuel to react; a compressor to output compressed air which compresses ambient atmosphere; a combustor to combust the flammable gas generated in the gasifying furnace with compressed air from the compressor; a gas turbine to rotationally drive supplied by combusted gas with the combustion operation of the combustor; a booster to boost the gasifying agent supplied to the gasifying furnace; a gasifying agent supply path to supply the gasifying agent boosted by the booster to the gasifying furnace without being mediated by any control valves; a gasifying agent bypass path which is branched from a gasifying agent supply path and which converges with one of a compressor discharge opening and the combustor input opening; and a first control valve to adjust flow quantity or pressure of the gasifying agent flowing through the gasifying agent bypass path, by adjusting the degree of opening thereof.