Zero emission natural gas power and liquefaction plant
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0558854
(2009-09-14)
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등록번호 |
US-8276380
(2012-10-02)
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발명자
/ 주소 |
- Ramakrishnan, Terizhandur S.
- Verma, Sandeep
- Zhang, Wenlin
- Lacour-Gayet, Philippe
- Vembusubramanian, Muthusamy
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출원인 / 주소 |
- Schlumberger Technology Corporation
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인용정보 |
피인용 횟수 :
0 인용 특허 :
8 |
초록
▼
A zero-emissions power plant receives natural gas from wells at elevated pressure and temperature. Gas is expanded through one or more turbo-expanders, preferably reformed, and sent to a fuel cell where electricity, heat, carbon-dioxide, and water are generated. The carbon-dioxide is compressed by a
A zero-emissions power plant receives natural gas from wells at elevated pressure and temperature. Gas is expanded through one or more turbo-expanders, preferably reformed, and sent to a fuel cell where electricity, heat, carbon-dioxide, and water are generated. The carbon-dioxide is compressed by at least one compressor and piped downhole for sequestration. The turbo-expanders have shafts which preferably share the shafts of the compressors. Thus, energy given up by the natural gas in the turbo-expanders is used to run compressors which compress carbon dioxide for downhole sequestration. In one embodiment, the natural gas is applied to heat exchangers in order to generate a stream of liquid natural gas. The remainder of the gas is expanded through the turbo-expanders and processed in the reformer prior to being sent to the fuel cell. A shifter may be used between the reformer and fuel cell. A solid oxide fuel cell is preferred.
대표청구항
▼
1. A combination natural gas power and liquefaction plant located at or near a methane-producing formation traversed by at least one borehole, comprising: first piping coupled to said borehole, said piping transporting said methane;heat exchange means which receives said methane for producing a liqu
1. A combination natural gas power and liquefaction plant located at or near a methane-producing formation traversed by at least one borehole, comprising: first piping coupled to said borehole, said piping transporting said methane;heat exchange means which receives said methane for producing a liquid natural gas (LNG) stream and a vapor natural gas stream therefrom;means for storing said LNG;a reformer which receives water and said vapor natural gas stream and generates as outputs therefrom hydrogen gas and carbon monoxide;a fuel cell and separator coupled to said reformer output, wherein outputs from said fuel cell and separator include electricity, heat, water, and carbon dioxide;a first compressor which receives said carbon dioxide and compresses it; andsecond piping coupled to said first compressor and transporting compressed carbon dioxide into a geological formation for sequestration therein. 2. A combination natural gas power and liquefaction plant according to claim 1, wherein: said heat exchange means comprises a multi-stage heat exchanger and a stream divider. 3. A combination natural gas power and liquefaction plant according to claim 2, wherein: said heat exchange means further comprises a valve expander coupled to said stream divider and a separator coupled to said valve expander, said separator coupled to said means for storing said LNG. 4. A combination natural gas power and liquefaction plant according to claim 1, further comprising: a first turbo-expander coupled to said heat exchange means, wherein said first turbo-expander receives said vapor natural gas stream at a first pressure and generates work therefrom, said methane exiting said turbo-expander at a reduced pressure relative to said first pressure, said turbo-expander having a shaft coupled to said compressor. 5. A combination natural gas power and liquefaction plant according to claim 4, further comprising: a second turbo-expander coupled to said heat exchange means, wherein said second turbo-expander receives said vapor natural gas stream at a second pressure and generates work therefrom, said methane exiting said turbo-expander at a reduced pressure relative to said second pressure, said turbo-expander having a second shaft; anda second compressor coupled to said first compressor and to said second shaft of said second turbo-expander. 6. A combination natural gas power and liquefaction plant according to claim 4, further comprising: a first moisture separator associated with said first compressor, and a second moisture separator associated with said second compressor, said first and second moisture separators for separating out water from said carbon dioxide. 7. A combination natural gas power and liquefaction plant according to claim 5, further comprising: a third compressor coupled to said second compressor and powered by said fuel cell. 8. A combination natural gas power and liquefaction plant according to claim 1, wherein: said fuel cell is a solid oxide fuel cell.
이 특허에 인용된 특허 (8)
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Palmer Ian (Cumbria GBX) Seymour Clive M. (Cumbria GBX) Dams Robert A. J. (West Sussex GBX), Application of fuel cells to power generation systems.
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Licari,James P.; Ottesen,Hal H.; Walters,Jim, Hybrid geothermal and fuel-cell system.
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Viteri,Fermin; Taylor,James P.; Brandt,Harry; Anderson,Roger E., Hydrocarbon combustion power generation system with CO2 sequestration.
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Mitlitsky, Fred; Sridhar, K. R.; Gottman, Matthias; Venkataraman, Swaminathan, Method of optimizing operating efficiency of fuel cells.
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Pflanz,Tassilo, Power plant system for utilizing the heat energy of geothermal reservoirs.
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Keefer,Bowie G.; Sawada,James A.; Johannes,Erik P.; Roy,Surajit; Brown,Michael J., Systems and processes for providing hydrogen to fuel cells.
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Bruce T. Kelley, Thermodynamic cycle using hydrostatic head for compression.
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Ramakrishnan, Terizhandur S.; Verma, Sandeep; Zhang, Wenlin; Lacour Gayet, Philippe; Vembusubramanian, Muthusamy, Zero emission natural gas power and liquefaction plant.
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