[특허]System and method for heating fuel in a combined cycle gas turbine

GENERAL ELECTRIC COMPANY

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특허 상세정보

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System and method for heating fuel in a combined cycle gas turbine

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02C-007/224 F02C-006/06
출원번호	US-0651836 (2012-10-15)
등록번호	US-9470145 (2016-10-18)
발명자 / 주소	Ball, Jr., David Wesley Rendo, Korey Frederic Erickson, Dean Matthew Rancruel, Diego Fernando Tong, Leslie Yung-Min
출원인 / 주소	GENERAL ELECTRIC COMPANY
대리인 / 주소	Dority & Manning, PA
인용정보	피인용 횟수 : 1 인용 특허 : 19

초록
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A system for heating fuel in a combined cycle gas turbine includes a fuel heat exchanger downstream from a turbine outlet, and the fuel heat exchanger has an exhaust gas inlet, an exhaust gas outlet, a fuel inlet, and a fuel outlet. A first exhaust gas plenum has a first exhaust gas inlet connection between the turbine outlet and a heat exchanger and a first exhaust gas outlet connection upstream from the exhaust gas inlet. A second exhaust gas plenum has a second exhaust gas inlet connection downstream from at least a portion of the heat exchanger and a...

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1. A system for heating fuel in a combined cycle gas turbine, comprising: a combustor;a turbine having an outlet, wherein an exhaust gas flow from the turbine exits the outlet;a heat recovery steam generator in fluid communication with the turbine outlet;a first exhaust gas plenum in fluid communication at a junction with the turbine outlet;a second exhaust gas plenum in fluid communication at a junction with the heat recovery steam generator;a mixing chamber in fluid communication with the first exhaust gas plenum and the second exhaust gas plenum; anda fuel heat exchanger in fluid communication with the mixing chamber;wherein a first portion of the exhaust gas flow is directed from the turbine outlet through the first exhaust gas plenum to the mixing chamber, a second portion of the exhaust gas flow is directed from the heat recovery steam generator through the second exhaust gas plenum to the mixing chamber, and the first portion of the exhaust gas flow and the second portion of exhaust gas flow form a blended flow in the mixing chamber that is directed from the mixing chamber directly to the fuel heat exchanger; andwherein at least some of the blended flow exiting the fuel heat exchanger bypasses the combustor and flows directly to the mixing chamber, the blended flow exiting the fuel heat exchanger and directed to rejoin the exhaust gas flow from the turbine outlet at a connection point that is fluidly downstream of the turbine outlet and at least one of the junctions of the first exhaust gas plenum and the second exhaust gas plenum. 2. The system as in claim 1, further comprising means for controlling the exhaust gas flow through the first exhaust gas plenum and the second exhaust gas plenum. 3. The system as in claim 1, further comprising means for controlling the exhaust gas flow to the heat recovery steam generator. 4. The system as in claim 1, further comprising an exhaust gas recirculation plenum in fluid communication with the mixing chamber and the fuel heat exchanger. 5. The system as in claim 4, further comprising means for controlling a recirculated exhaust gas flow from the fuel heat exchanger into the exhaust gas recirculation plenum. 6. The system as in claim 4, wherein the mixing chamber comprises a baffle therein. 7. The system as in claim 1, further comprising a third exhaust gas plenum in fluid communication with the fuel heat exchanger and at least a portion of the heat recovery steam generator. 8. The system as in claim 1, further comprising a fuel bypass plenum including a fuel bypass inlet upstream from said fuel heat exchanger and a fuel bypass outlet downstream from said fuel heat exchanger. 9. The system as in claim 8, further comprising: means for controlling a bypass fuel flow into the fuel bypass plenum. 10. A system for heating fuel in a combined cycle gas turbine, comprising: a combustor;a turbine outlet disposed downstream from a turbine, wherein an exhaust gas flow from the turbine exits the turbine outlet;a heat recovery steam generator in fluid communication with the turbine outlet;means for controlling the exhaust gas flow to the heat recovery steam generator;a first exhaust gas plenum in fluid communication at a junction with the turbine outlet;a second exhaust gas plenum in fluid communication at a junction with the heat recovery steam generator;a mixing chamber in fluid communication with the first exhaust gas plenum and the second exhaust gas plenum; anda fuel heat exchanger in fluid communication with the mixing chamber;wherein a first portion of the exhaust gas flow is directed from the turbine outlet through the first exhaust gas plenum to the mixing chamber, a second portion of the exhaust gas flow is directed from the heat recovery steam generator through the second exhaust gas plenum to the mixing chamber, and the first portion of the exhaust gas flow and the second portion of exhaust gas flow form a blended flow in the mixing chamber that is directed from the mixing chamber directly to the fuel heat exchanger; andwherein at least some of the blended flow exiting the fuel heat exchanger bypasses the combustor and flows directly to the mixing chamber, the blended flow exiting the fuel heat exchanger and directed to rejoin the exhaust gas flow from the turbine outlet at a connection point that is fluidly downstream of the turbine outlet and at least one of the junctions of the first exhaust gas plenum and the second exhaust gas plenum. 11. The system as in claim 10, further comprising means for controlling the exhaust flow through the first exhaust gas plenum and the second exhaust gas plenum. 12. The system as in claim 10, wherein the mixing chamber comprises a baffle therein. 13. The system as in claim 10, further comprising an exhaust gas recirculation plenum in fluid communication with the mixing chamber and the fuel heat exchanger. 14. The system as in claim 13, further comprising means for controlling a recirculated exhaust gas flow from the fuel heat exchanger into the exhaust gas recirculation plenum. 15. The system as in claim 10, further comprising a third exhaust gas plenum in fluid communication with the fuel heat exchanger and at least a portion of the heat recovery steam generator. 16. A system for heating fuel in a gas turbine, comprising: a compressor;a combustor;a turbine comprising a turbine outlet where an exhaust gas flow exits a turbine;a heat recovery steam generator in fluid communication with the turbine outlet;a first exhaust gas plenum in fluid communication at a junction with the turbine outlet;a second exhaust gas plenum in fluid communication at a junction with the heat recovery steam generator;a mixing chamber in fluid communication with the first exhaust gas plenum and the second exhaust gas plenum; anda fuel heat exchanger in fluid communication with the mixing chamber;wherein a first portion of the exhaust gas flow is directed from the turbine outlet through the first exhaust gas plenum to the mixing chamber, a second portion of the exhaust gas flow is directed from the heat recovery steam generator through the second exhaust gas plenum to the mixing chamber, and the first portion of the exhaust gas flow and the second portion of exhaust gas flow form a blended flow in the mixing chamber that is directed from the mixing chamber directly to the fuel heat exchanger; andwherein at least some of the blended flow exiting the fuel heat exchanger bypasses the combustor and flows directly to the mixing chamber, the blended flow exiting the fuel heat exchanger and directed to rejoin the exhaust gas flow from the turbine outlet at a connection point that is fluidly downstream of the turbine outlet and at least one of the junctions of the first exhaust gas plenum and the second exhaust gas plenum. 17. The system as in claim 16, further comprising means for controlling the exhaust gas flow through the first exhaust gas plenum and the second exhaust gas plenum. 18. The system as in claim 16, further comprising means for controlling the exhaust gas flow to the heat recovery steam generator. 19. The system as in claim 16, further comprising an exhaust gas recirculation plenum in fluid communication with the mixing chamber and the fuel heat exchanger.

이 특허에 인용된 특허 (19)

이 특허를 인용한 특허 피인용횟수: 1

Drouvot, Paul; Droux, François; Berg, Klara. Power plant with integrated fuel gas preheating. USP20180610006313.

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System and method for heating fuel in a combined cycle gas turbine

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System and method for heating fuel in a combined cycle gas turbine

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이 특허에 인용된 특허 (19)

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