Patent ID: 6986256

Claim:
A gas turbine having a turbine, a combustor and a gas turbine compressor, comprising: a heat exchanger for exchanging heat of a part of the air compressed by said gas turbine compressor; a mist separator for separating mists in the air having been heat exchanged in said heat exchanger; a filter for removing dusts in the air from said mist separator; a first boost compressor for compressing the air from said filter; a second boost compressor for compressing the air from said filter, said first boost compressor and said second boost compressor being constructed so that the air from said first boost compressor and the air from said second boost compressor are joined; a spray air system arranged so that the air is supplied from an air joining portion where the air from said first boost compressor and the air from said second boost compressor are joined prior to being supplied to said combustor as air for spraying fuel; and a cooling air system arranged so that the air is supplied from said air joining portion to a high-temperature part of said gas turbine as air for cooling.