To improve functional reliability and functional form in a given operational mode, by injecting a liquid fuel in the form of full jet from an injection angle smaller than a given angle into an inner chamber of a premixed burner.
A gas turbine plant consists of a compressor, a gas turbine and a combustor 1. A plurality of premixed burners 4 which are formed as double-conical burners suitable for the operation by a liquid fuel 2 and a gas fuel 3, are arranged in the combustor 1. A fuel oil which serves as the liquid fuel 2 is fed to the premixed burner 4 through a fuel lance 18. Then, the fuel oil 2 is injected into a chamber 9 through an injection port 19 at the center of a liquid fuel nozzle 17 at an angle α which is smaller than 10°. Thus, functional reliability and functional form can be improved in a given operational mode.
HELLAT JAAN DR
KELLER JAKOB
MCMILLAN ROBIN
SUTER ROGER
