METHOD FOR REDUCING RESIDUAL OXYGEN CONCENTRATION IN EXHAUST GAS FOR CONVEYING GASIFICATION RAW MATERIAL IN GASIFICATION GAS POWER PLANT, AND DETERMINATION METHOD OF FUEL SUPPLY CONDITION FOR REDUCTION AND DETERMINATION PROGRAM OF FUEL SUPPLY CONDITION

摘要

PROBLEM TO BE SOLVED: To enable reduction of residual Oconcentration in combustion exhaust gas of a gas turbine used as media for conveying gasification raw materials to a gasification facility in a gasification gas power plant.SOLUTION: To gas turbine combustion exhaust gas before using as media for conveying a gasification raw material (coal C) to a gasification furnace 2, in other words, before supplying to a gasification raw material supply line 4, a part of gasification gas CG2 refined at a gas refining facility 3 or at least one of hydrogen and/or carbon monoxide and hydrocarbon extracted from the gasification gas CG2 are supplied.