Ambient pressure gas turbine system
OwnerGéza Vermes, János M. Beérinventors
Life of this patent
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Abstract
An ambient pressure gas turbine system is provided for mid-range power plants (for example, 1-4 MW) while achieving low NOx emission levels. The system includes a combustor that burns a hydrocarbon fuel at ambient pressure. A first heat exchanger upstream of the combustor heats the working fluid. A turbine downstream from the combustor expands combustion gases. The combustion gases are directed to the first heat exchanger for heat exchange with the working fluid and then to a compressor operative to compress the combustion gases. A second heat exchanger between the first heat exchanger and the compressor further cools the combustion gases to the compressor inlet temperature.
Claims13
An ambient pressure gas turbine system comprising:
- a combustor operative to burn a gaseous, liquid, or solid fuel in the presence of a working fluid at ambient pressure;
- a turbine downstream from the combustor operative to expand combustion gases from the combustor;
- a compressor downstream from the turbine operative to compress the combustion gases from the turbine;
- a first heat exchanger operative to heat the working fluid on an inlet flow path to a combustor inlet temperature at ambient pressure by heat exchange with the combustion gases on a counterflowing path from the turbine;
- and
- a second heat exchanger between the first heat exchanger and the compressor to receive the combustion gases from the first heat exchanger and operative to cool the combustion gases to a compressor inlet temperature.
A process for generating power, comprising:
- heating a working fluid at ambient pressure to a combustor inlet temperature;
- burning a gaseous, liquid, or solid fuel in a combustor in the presence of the heated working fluid at ambient pressure;
- expanding combustion products from the combustor in a turbine;
- cooling the combustion products from the turbine by heat exchange with the working fluid;
- further cooling the combustion products to a compressor inlet temperature;
- compressing the combustion products to return to ambient pressure.
Dependencies are inferred from the claim text.