Patent ID: 7581379

Claim:
A gas turbine power generating machine installed near a gas field and/or an oil field and transmitting generated electricity to a consuming area through power transmission means, said gas turbine power generating machine comprising: a gaseous fuel processing apparatus for pre-processing natural gas produced in said gas field and/or gaseous fuel, including associated gas, produced in said oil field; a liquid fuel processing apparatus for pre-processing liquid fuel obtained during extraction and a refining process of the natural gas and/or liquid fuel produced in said oil field; and a gas turbine comprising a compressor for generating compressed air, a combustor for mixing the compressed air from said compressor with both of the gaseous fuel pre-processed by said gaseous fuel processing apparatus and the liquid fuel pre-processed by said liquid fuel processing apparatus, and for burning a gas mixture, and a turbine for driving a generator by combustion gases supplied from said combustor, wherein said combustor comprises: a liquid fuel atomizer for atomization of the liquid fuel; a pre-mixing chamber wall having a hollow conical shape gradually spreading in the direction of the atomization of said liquid fuel atomizer and defining a pre-mixing chamber therein with said liquid fuel atomizer disposed at a center of said pre-mixing chamber wall; a plurality of air inlet holes bored in said pre-mixing chamber wall and introducing the compressed air supplied from said compressor such that angles at which the compressed air is introduced to said pre-mixing chamber are deviated at least toward the circumferential direction of said pre-mixing chamber; and a plurality of gaseous fuel nozzles disposed on the outer side of said pre-mixing chamber wall in opposed relation to said air inlet holes and ejecting the gaseous fuel in directions substantially coaxial with respective axes of said air inlet holes.