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Integrated gas turbine solid oxide fuel cell system
| Details |
Inventors: Domeracki, William F.; Lundberg, Wayne L.; Dowdy, Thomas E.; Linder, JoAnn M.;
Assignee: Westinghouse Electric Corporation (Pittsburgh, PA)
Primary Examiner: Skapars; Anthony
Assistant Examiner:
Attorney, Agent or Firm:
An improved integrated gas turbine solid oxide fuel cell system. The system has a compressor for producing compressed air that is pre-heated and then supplied to a solid oxide fuel cell generator. The solid oxide fuel cell generator, which is also supplied with a first stream of fuel, produces electrical power and a hot gas. In the solid oxide fuel cell generator, the unreacted portion of the fuel is combusted with the oxygen remaining in the hot gas to further heat the hot gas. The further heated hot gas is then directed to a topping combustor that is supplied with a second stream of fuel so as to produce a still further heated hot gas that is then expanded in a turbine. |
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DETAILED DESCRIPTION Accordingly, it is the general object of the current invention to provide an integrated gas turbine solid oxide fuel cell system having the capability of further heating the hot gas from the solid oxide fuel cells to a temperature suitable for optimum power output in a modern gas turbine.
Briefly, this object, as well as other objects of the current invention, is accomplished in a gas turbine system for generating electrical power comprising a compressor for producing compressed air, a solid oxide fuel cell generator, a topping combustor, and a turbine.
The solid oxide fuel cell generator has (i) means for receiving the compressed air from the compressor, (ii) means for receiving a first flow of fuel, and (iii) means for reacting at least a first portion of the received first flow of fuel with the compressed air so as to produce electrical power and a hot compressed gas containing oxygen.
The topping combustor has (i) means for receiving the hot compressed gas from the solid oxide fuel cell generator, (ii) means for receiving a second flow of fuel, and (iii) means for combusting the second flow fuel in the hot compressed gas so as to produce a further heated compressed gas.
The turbine has (i) a rotor mounted for rotation therein and (ii) means for expanding the further heated compressed gas, thereby producing power in the turbine rotor and an expanded gas.
In the preferred embodiment, the gas turbine system further comprises means for combusting a second portion of the received first flow of fuel in the hot compressed gas produced by the solid oxide fuel cell generator so as to further heat the hot compressed gas prior to combusting the second flow of fuel in the hot compressed gas in the topping combustor.
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