초록 ▼

A gas turbine driven powerplant in which a mixture of steam and a combustible effluent, such as methane, is reformed or partially oxidized to produce a hydrogen-rich fuel which is used to fuel both the primary combustor and a reheat combustor positioned upstream of the final turbine stage, such as t

A gas turbine driven powerplant in which a mixture of steam and a combustible effluent, such as methane, is reformed or partially oxidized to produce a hydrogen-rich fuel which is used to fuel both the primary combustor and a reheat combustor positioned upstream of the final turbine stage, such as the power turbine. Reheat combustion is effected by injecting the hydrogen-rich fuel through the cooling orifices of the first turbine upstream of the final turbine stage and into the gas turbine flow path from the trailing edge of the stationary vanes and/or rotating blades, where the fuel auto ignites with complete combustion occurring at a nominal distance after injection into the air stream. Further, the hydrogen-rich fuel can be used as a coolant for the final turbine stage to allow higher reheat temperatures to be achieved. This reheat design, which will simultaneously provide turbine cooling and supply a reheat fuel that will auto-ignite and burn cleanly, provides the efficiency benefits of reheat without significant or costly redesign of the final turbine stage, and without adding new equipment.

대표청구항 ▼

A gas turbine driven powerplant, comprising: (a) compressor means for producing a downstream flow of air; (b) a combustor positioned downstream of said compressor means; (c) a first turbine positioned downstream of said combustor, said turbine coupled to said compressor by a shaft; (d) a reheat comb

A gas turbine driven powerplant, comprising: (a) compressor means for producing a downstream flow of air; (b) a combustor positioned downstream of said compressor means; (c) a first turbine positioned downstream of said combustor, said turbine coupled to said compressor by a shaft; (d) a reheat combustor positioned downstream of said turbine; and (e) a second turbine positioned downstream of said reheat combustor; (f) said reheat combustor receiving a flow of hydrogen-rich fuel through cooling orifices in said first turbine, wherein said hydrogen-rich fuel auto-ignites upon discharge from said cooling orifices into the flow of air from said first turbine to said second turbine.