IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0728416
(2010-03-22)
|
등록번호 |
US-8528342
(2013-09-10)
|
우선권정보 |
DE-10 2009 014 447 (2009-03-23) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
5 |
초록
▼
A power plant has a coal gasification device for gasifying coal, particularly with water injection, a gas combustion device, particularly a CES burner, for combusting synthesis gas, particularly purified synthesis gas, from the coal gasification device, a hot gas expander for generating usable outpu
A power plant has a coal gasification device for gasifying coal, particularly with water injection, a gas combustion device, particularly a CES burner, for combusting synthesis gas, particularly purified synthesis gas, from the coal gasification device, a hot gas expander for generating usable output power by expansion of flue gas from the gas combustion device, a steam generator, particularly a waste heat steam generator, for heating, particularly for evaporating and/or superheating, feedwater through exhaust heat of the expanded flue gas, a steam turbine set with at least a first stage for expanding steam, particularly high-pressure steam, from the steam generator, and a reheater which is arranged after the first stage of the steam turbine set and through which expanded flue gas flows. In this power plant, the cold rail of the reheater is throttled by a throttle device for constant pressure operation on the high-pressure side, and the steam parameters for the cold reheater rail are achieved by a conditioning valve for sliding pressure operation on the high-pressure side.
대표청구항
▼
1. A power plant comprising: a coal gasification device for gasifying coal;a gas combustion device for combusting synthesis gas from said coal gasification device;a hot gas expander for generating usable output power by expansion of flue gas from said gas combustion device;a steam generator for heat
1. A power plant comprising: a coal gasification device for gasifying coal;a gas combustion device for combusting synthesis gas from said coal gasification device;a hot gas expander for generating usable output power by expansion of flue gas from said gas combustion device;a steam generator for heating feedwater through exhaust heat of the expanded flue gas;a steam turbine set with at least a high pressure first stage for expanding steam from said steam generator; anda reheater arranged after said first stage of said steam turbine set and through which expanded flue gas flows; said power plant further comprising one of a throttle device disposed after said reheater and a conditioning valve for steam takeoff before said high-pressure first stage. 2. The power plant according to claim 1, wherein said steam turbine set comprises a second stage for further expansion of steam from said first stage; and wherein one of said reheater and said throttle device is arranged between said first stage and said second stage of said steam turbine set. 3. The power plant according to claim 1, wherein said steam generator and said reheater are integrated in a waste heat boiler. 4. The power plant according to claim 1, additionally comprising a desulfurizing device for desulfurizing the expanded flue gas after a waste heat boiler. 5. The power plant according to claim 4, additionally comprising a refrigerating compressor for compressing carbon dioxide gas from said desulfurizing device which is connected to said hot gas expander. 6. The power plant according to claim 5, additionally comprising a flue gas condenser for condensing flue gas which is arranged between said desulfurizing device and said compressor. 7. The power plant according to claim 6, additionally comprising a refrigerant expander - connected to said flue gas condenser. 8. The power plant according to claim 1, additionally comprising an oxygen feed connected to one of said coal gasification device and said gas combustion device. 9. The power plant according to claim 1, wherein said coal gasification device includes a device for quenching by water injection. 10. The power plant according to claim 1, wherein said gas combustion device is a CES burner. 11. The power plant according to claim 1, wherein said steam generator is a waste heat steam generator. 12. A process for generating usable output power comprising steps of: gasifying coal in a coal gasification device; combusting synthesis gas from the coal gasification device in a gas combustion device;generating usable output power in a hot gas expander by expansion of flue gas from the gas combustion device;heating feedwater in a steam generator by exhaust heat of the expanded flue gas;expanding steam from the steam generator in a first stage of a steam turbine set;reheating the steam in a reheater by the expanded flue gas; and further comprising one of the steps of throttling of the steam in a throttle device following said reheater and taking off steam before the high-pressure part with a conditioning valve. 13. Process according to claim 12, wherein the steam from the first stage of the steam turbine set is expanded in a second stage, and the steam is throttled in the throttle device between the reheater in a waste heat boiler and a second stage of the steam turbine set. 14. The process according to claim 12, wherein the steam is taken off before the first stage of the steam turbine set and is reduced by the conditioning valve to the state of a cold reheater rail. 15. The process according to claim 12, additionally comprising desulfurizing of the expanded flue gas after a waste heat boiler in a desulfurizing device. 16. The process according to claim 12, additionally comprising the steps of compressing of carbon dioxide gas from a flue gas condenser by a refrigerating compressor; cooling of the hot gas expander by means of carbon dioxide gas from the refrigerating compressor; andcompressing of the residual CO2 gas for enhanced oil recovery. 17. The process according to claim 12, additionally comprising the steps of compressing air with a compressor to generate oxygen; and charging one of a coal gasification device and gas combustion device with the oxygen. 18. The process according to claim 12, wherein said heating of said feedwater is performed by one of the steps of evaporating and superheating the feedwater.
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