Patent ID: 7908864

Claim:
A combustor nozzle, comprising: a first fuel system configured to introduce at least one of a syngas fuel, a hydrocarbon fuel into a combustion chamber to enable lean premixed combustion within the combustion chamber, wherein the first fuel system comprises: a first set of injection orifices disposed on at least one of a burner tube or a burner center body for introducing at least one of the hydrocarbon fuel or the syngas fuel within the nozzle, for a premixed hydrocarbon or syngas mode of operation; a second set of injection orifices disposed on a plurality of swozzle vanes for introducing at least one of the hydrocarbon fuel or the syngas fuel within the nozzle, for the premixed hydrocarbon or syngas mode of operation; and a third set of injection orifices disposed on the burner tube for introducing the syngas fuel within the nozzle for the premixed syngas mode of operation; and a second fuel system configured to introduce at least one of the syngas fuel, the hydrocarbon fuel, or diluents into the combustion chamber to enable diffusion combustion within the combustion chamber, wherein the second fuel system comprises: a diffusion nozzle tip that includes a plurality of injection orifices circumferentially distributed in the nozzle tip.