GASIFICATION FUEL CELL HYBRID POWER GENERATION SYSTEM AND OPERATIONAL METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a gasification fuel cell hybrid power generation system capable of improving hybrid generation efficiency by using an existing technology such as a gas turbine used in an IGCC or the like.SOLUTION: In a gasification fuel cell hybrid power generation system, a carbonaceous solid fuel is gasified in a gasification furnace 10 and a fuel gas refined by a gas refining part 20 is supplied, power generation by a solid oxide type fuel cell 30 and power generation using a gas turbine 40 as a driving source of a generator are performed, and power generation using a steam turbine 51 operated by introducing steam generated by utilizing waste-heat of flue gas discharged from the gas turbine 40 as the driving source of a generator is performed. A fuel gas supply system F is respectively branched into: a fuel cell gas supply system Fs through which the fuel gas is connected the gas refining part (20) to the solid oxide type fuel cell 30 and which supplies the fuel gas; and a gas turbine gas supply system Fg connected to the gas turbine 40 and supplies the fuel gas.