Gas turbine combustor, combustion method of the gas turbine combustor, and method of remodeling a gas turbine combustor

摘要

The invention relates to a gas turbine combustor comprising a premixed combustion burner disposed on the periphery of a pilot burner, an approximately cylindrical combustor liner (3) disposed on the downstream side of the premixed combustion burner, which defines a combustion chamber (4) in the liner (3). The gas turbine combustor is characterized by further comprising flame stabilizers (10) radially disposed at the exit of the premixed combustion burner, and a fuel injection means with which the pilot burner (5) is provided injects at least one of gas fuel and liquid fuel, in which a plurality of air nozzles (26) are provided which are located outside the pilot burner and inside the premixed combustion burner, and which spout out air into the combustion chamber (4). Adequate combustion can be accomplished with a combustor which is capable of using gas fuel and liquid fuel, and at the same time, NOx can be reduced.