To provide a dual fuel-compliant gas turbine combustor capable of achieving a low NOx concentration and securing stability in combustion even if the fluctuation of atmospheric conditions and the change of a composition of fuel are found in operating the gas turbine combustor burning gas fuel.
This gas turbine combustor is provided with a liquid fuel supply system and a gas fuel supply system for supplying the fuel, and comprises a diffusion combustion burner on the center of an axis of the gas turbine combustor, and a plurality of premixing combustion burners at an outer peripheral side of the diffusion combustion burner. The diffusion combustion burner has a liquid fuel nozzle and a gas fuel nozzle, the other liquid fuel nozzle and a gas fuel injection hole are formed at the premixing combustion burner, and a part of the gas fuel supply system is connected to the liquid fuel nozzle disposed on the diffusion combustion burner to inject the gas fuel from the liquid fuel nozzle.
YOSHIDA SHOHEI
SEKIGUCHI TATSUYA
KOGANEZAWA TOMOKI
