Systems and methods for power generation and hydrogen production with carbon dioxide isolation
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02C-003/28
F02C-003/26
F02C-006/08
F02C-006/00
F02C-006/18
출원번호
UP-0302554
(2005-12-13)
등록번호
US-7634915
(2010-01-08)
발명자
/ 주소
Hoffmann, Stephanie Marie Noelle
Bartlett, Michael Adam
출원인 / 주소
General Electric Company
대리인 / 주소
Patnode, Patrick K.
인용정보
피인용 횟수 :
61인용 특허 :
7
초록▼
A power generation system includes a first gas turbine system. The first turbine system includes a first combustion chamber configured to combust a first fuel stream of primarily hydrogen that is substantially free of carbon-based fuels, a first compressor configured to supply a first portion of com
A power generation system includes a first gas turbine system. The first turbine system includes a first combustion chamber configured to combust a first fuel stream of primarily hydrogen that is substantially free of carbon-based fuels, a first compressor configured to supply a first portion of compressed oxidant to the first combustion chamber and a first turbine configured to receive a first discharge from the first combustion chamber and generate a first exhaust and electrical energy. The power generation system further includes a second gas turbine system. The second turbine system includes a second combustion chamber configured to combust a second fuel stream to generate a second discharge, wherein the first compressor of the first gas turbine system is configured to supply a second portion of compressed oxidant to the second combustion chamber and a second turbine configured to receive the second discharge from the second combustion chamber to generate a second exhaust and electrical energy. A second compressor is configured to receive the second exhaust comprising carbon dioxide and to discharge a recycle stream to the second combustion chamber and a split stream to a separator system adapted to recover carbon dioxide. The power generation system also includes a hydrogen generation system configured to receive a third fuel and steam to generate the first fuel and a third exhaust gas, wherein the third exhaust gas is recycled into the second combustion chamber.
대표청구항▼
What is claimed is: 1. A power generation system comprising: a first gas turbine system comprising: a first combustion chamber configured to combust a first fuel stream of primarily hydrogen that is substantially free of carbon-based fuels; a first compressor configured to supply a first portion of
What is claimed is: 1. A power generation system comprising: a first gas turbine system comprising: a first combustion chamber configured to combust a first fuel stream of primarily hydrogen that is substantially free of carbon-based fuels; a first compressor configured to supply a first portion of compressed oxidant to said first combustion chamber; and a first turbine configured to receive a first discharge from said first combustion chamber and generate a first exhaust and electrical energy; a second gas turbine system comprising: a second combustion chamber configured to combust a second fuel stream to generate a second discharge, wherein said first compressor of said first gas turbine system is configured to supply a second portion of compressed oxidant to said second combustion chamber; and a second turbine configured to receive said second discharge from said second combustion chamber to generate a second exhaust and electrical energy; and a second compressor configured to receive said second exhaust comprising carbon dioxide and to discharge a recycle stream to said second combustion chamber and a split stream to a separator system adapted to recover carbon dioxide; and a hydrogen generation system configured to receive a third fuel and steam to generate said first fuel and a third exhaust gas, wherein said third exhaust gas is introduced into said second combustion chamber, wherein said hydrogen generation system comprises: a steam reforming zone configured to reform fossil-based fuels to generate a reformate comprising hydrogen; at least one heat exchanger; and a hydrogen separator to generate an off gas stream, wherein said off gas stream is combusted in a combustor along with a third portion of compressed oxidant from said first compressor to supply heat to said steam reforming zone and generate said third exhaust gas. 2. The system of claim 1, wherein said hydrogen generation system further comprises a water gas shift reactor configured to convert carbon monoxide to carbon dioxide and hydrogen. 3. The system of claim 1, wherein said hydrogen separator employs pressure swing adsorption. 4. The system of claim 1, wherein said fuel is selected from the group consisting of natural gas, methane, methanol, ethanol, a stream comprising naphtha, butane, propane, diesel, kerosene, an aviation fuel, a coal derived fuel, a bio-fuel, an oxygenated hydrocarbon feedstock, and mixtures thereof. 5. The system in claim 1, wherein said fuel comprises natural gas. 6. The system of claim 1, wherein said oxidant is selected from a group consisting of air, oxygen rich air, oxygen depleted air, and pure oxygen. 7. The system of claim 1, wherein said oxidant is air. 8. The system of claim 1, wherein said separator system comprises a heat exchanger configured to recover heat from said split stream and a carbon dioxide separator configured to generate a carbon dioxide rich stream and a carbon dioxide lean stream. 9. The system of claim 8, wherein said heat exchanger comprises a cross-exchanger configured to recover heat from said split stream in exchange with said carbon dioxide lean stream from said carbon dioxide separator. 10. The system of claim 8, wherein said carbon dioxide separator comprises a membrane unit. 11. The system of claim 8, wherein a first portion of said carbon dioxide lean stream is recycled into said first combustion chamber for controlling the temperature and a second portion of said carbon dioxide lean stream is introduced into said first turbine for cooling. 12. The system of claim 1, further comprising a first heat recovery steam generator configured to recover heat from said first exhaust and generate a first portion of steam and a second heat recovery steam generator configured to recover heat from said second exhaust and generate a second portion of steam. 13. The system of claim 12 further comprising a steam turbine configured to receive said first portion of steam and second portion of steam. 14. The system of claim 13, wherein said at least one heat exchanger in said hydrogen generation system is configured to generate steam for said steam turbine. 15. The system of claim 12, wherein a part of said second portion of steam is recycled to said steam reforming zone. 16. A power generation system comprising: a first turbine system configured to combust a first fuel comprising a hydrogen-rich stream substantially free of carbon-based fuels and to discharge a first exhaust substantially free of carbon dioxide; a second turbine system configured to combust a second carbon-based fuel and to discharge a compressed stream rich in carbon dioxide to a carbon dioxide separator adapted to recover the carbon dioxide, wherein a compressor in the first turbine system is configured to supply air to said second turbine system; and a hydrogen generation system configured to receive a third fuel to generate said hydrogen-rich stream and an exhaust gas, wherein said exhaust gas is combusted in said second turbine system; wherein said hydrogen generation system comprises: a steam reforming zone configured to reform fossil-based fuels to generate a reformate comprising hydrogen; at least one heat exchanger; and a hydrogen separator to generate an off gas stream, wherein said off gas stream is combusted in a combustor along with a third portion of compressed oxidant from a compressor of said first turbine system to supply heat to said steam reforming zone and generate said exhaust gas; wherein said power generation system does not discharge substantial amounts of carbon dioxide to the atmosphere. 17. A method comprising: reforming a carbon based fuel in a hydrogen generation system and generating an exhaust gas by generating an off gas stream and combusting said off gas stream alone with a third portion of compressed oxidant from a first turbine system, combusting hydrogen from said hydrogen generation system and a first portion of compressed oxidant in said first turbine system; discharging a first exhaust from said first turbine system that is substantially free of carbon dioxide; introducing a second portion of compressed air from said first turbine system to a second turbine system; combusting carbon-based compounds and said exhaust gas from said hydrogen generation system in said second turbine system and generating a second exhaust comprising carbon dioxide; internally recycling within said second turbine system said second exhaust of said second turbine system to concentrate carbon dioxide within said second turbine system; and recovering said carbon dioxide from said second exhaust in a carbon dioxide separator.
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