초록 ▼

An improved thermal efficiency power plant for converting fuel energy to shaft horsepower is described. The conventional combustor of a gas tubine power plant is replaced by a direct contact steam boiler 8, modified to produce a mixture of superheated steam and combustion gases. Combustion takes pla

An improved thermal efficiency power plant for converting fuel energy to shaft horsepower is described. The conventional combustor of a gas tubine power plant is replaced by a direct contact steam boiler 8, modified to produce a mixture of superheated steam and combustion gases. Combustion takes place preferably at stoichiometric conditions. The maximum thermal efficiency of the disclosed plant is achievable at much higher pressures than conventional gas turbines. Uses of multi-stage compression turbines (4, 9, 1, 10) with intercooling (2, 3) and regeneration (16, 17, 18, 19) is utilized along with a vapor bottoming cycle (11, 12, 13) to achieve a thermal efficiency greater tha 60% with a maximum drive turbine inlet temperature of 1600 degrees Fahrenheit.

대표청구항 ▼

A method extending the life of a turbine utilized in a hybrid steam/gas turbine power plant of the type utilizing a direct fired steam generator for supplying steam and combustion products to the inlet of a drive turbine having a shaft coupled compressor stage comprising the steps of: Operating a di

A method extending the life of a turbine utilized in a hybrid steam/gas turbine power plant of the type utilizing a direct fired steam generator for supplying steam and combustion products to the inlet of a drive turbine having a shaft coupled compressor stage comprising the steps of: Operating a direct fired steam generator having feedwater, combustion air and fuel inlets, and an outlet delivering exhaust steam and combustion products for operating a drive turbine at a predetermined pressure; Providing a plurality of pressure and temperature staged exhaust discharges in said drive turbine; transferring heat, from said turbine exhausts to said generator feedwater; thereby heating said feedwater; limiting said feedwater heating to saturation temperatures and pressures of said feedwater; compressing atmospheric air in said compressor to a predetermined pressure and temperature for use as generator combustion air; supplying said combustion air, feedwater, and fuel to said generator inlets; cooling said combustion air by transferring heat to said steam generator feedwater; establishing a combination of said steam generator fuel, feedwater and combustion air flows such that said steam generator exhaust temperatures and pressure does not exceed a predetermined value.