IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
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출원번호 |
US-0939014
(2010-11-03)
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등록번호 |
US-8088185
(2012-01-03)
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발명자
/ 주소 |
- Clomburg, Jr., Lloyd Anthony
- Matzakos, Andreas Nicholas
- Veenstra, Peter
- Wellington, Scott Lee
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출원인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
8 |
초록
▼
A system is provided for producing and separating hydrogen and carbon dioxide from a hydrocarbon and steam. A hydrocarbon and steam are steam reformed and the reformed gas is shift reacted to produce a shift gas in the system. Hydrogen is removed from the shift gas, and the hydrogen-depleted gas is
A system is provided for producing and separating hydrogen and carbon dioxide from a hydrocarbon and steam. A hydrocarbon and steam are steam reformed and the reformed gas is shift reacted to produce a shift gas in the system. Hydrogen is removed from the shift gas, and the hydrogen-depleted gas is reformed and shift reacted again to produce more hydrogen and carbon dioxide in the system. The hydrogen and carbon dioxide are then separated.
대표청구항
▼
1. A system, comprising: a reforming reactor;first and second heat exchangers;a first-pass water-gas shift reactor and a second-pass water-gas shift reactor; andand a hydrogen gas separation unit;where(a) the reforming reactor has first and second feed inlets, first and second flow paths, first and
1. A system, comprising: a reforming reactor;first and second heat exchangers;a first-pass water-gas shift reactor and a second-pass water-gas shift reactor; andand a hydrogen gas separation unit;where(a) the reforming reactor has first and second feed inlets, first and second flow paths, first and second reforming reactor outlets, at least one reforming catalyst, anda heat source, wherein the first and second flow paths are separate and distinct; where (1) the first feed inlet is in gas/fluid communication with the first flow path;(2) the first flow path is in gas/fluid communication with at least one reforming catalyst and the first reforming reactor outlet, and is in heat transfer communication with the heat source;(3) the second feed inlet is in gas/fluid communication with the second flow path; and(4) the second flow path is in gas/fluid communication with at least one reforming catalyst and the second reforming reactor outlet, and is in heat transfer communication with the heat source;(b) the first reforming reactor outlet of the reforming reactor is in gas/fluid communication with the first heat exchanger;(c) the first heat exchanger is in gas/fluid communication with the first-pass water-gas shift reactor;(d) optionally, an additional first-pass water-gas shift reactor is in gas/fluid communication with the first-pass water-gas shift reactor;(e) the first-pass water-gas shift reactor is in gas/fluid communication with the hydrogen gas separation unit or, if an additional first-pass water-gas shift reactor is present in the system, the additional first-pass water-gas shift reactor is in gas/fluid communication with the hydrogen gas separation unit;(f) the hydrogen separation unit has a hydrogen gas outlet and a hydrogen-depleted gas outlet, where the hydrogen-depleted gas outlet of the hydrogen separation unit is in gas/fluid communication with the second feed inlet of the reforming reactor through the second heat exchanger;(g) the second reforming reactor outlet of the reforming reactor is in gas/fluid communication with the second heat exchanger; and(h) the second heat exchanger is in gas/fluid communication with the second-pass water-gas shift reactor. 2. The system of claim 1, further comprising: a hydrogen-carbon dioxide separation unit;where,(i) optionally, an additional second-pass water-gas shift reactor is in gas/fluid communication with the second-pass water-gas shift reactor; and(i) the second-pass water-gas shift reactor is in gas/fluid communication with the hydrogen-carbon dioxide separation unit or, if an additional second-pass water-gas shift reactor is present in the system, the additional second-pass water-gas shift reactor is in gas/fluid communication with the hydrogen-carbon dioxide separation unit. 3. The system of claim 1, wherein the hydrogen-carbon dioxide separation unit comprises a hydrogen gas separation membrane that is hydrogen-permeable and hydrogen-selective. 4. The system of claim 1, wherein the hydrogen-carbon dioxide separation unit comprises a pressure swing adsorption apparatus. 5. A system, comprising: a reforming reactor;first and second heat exchangers;a first-pass water-gas shift reactor and a second-pass water-gas shift reactor; anda second first-pass water-gas shift reactor having an inlet, a hydrogen-depleted gas outlet, and containing a hydrogen gas separation membrane that is hydrogen-permeable and hydrogen-selective and that has a hydrogen gas outlet;where(a) the reforming reactor has first and second feed inlets, first and second flow paths, first and second reforming reactor outlets, at least one reforming catalyst, and a heat source, wherein the first and second flow paths are separate and distinct; where (1) the first feed inlet is in gas/fluid communication with the first flow path;(2) the first flow path is in gas/fluid communication with at least one reforming catalyst and the first reforming reactor outlet, and is in heat transfer communication with the heat source;(3) the second feed inlet is in gas/fluid communication with the second flow path; and(4) the second flow path is in gas/fluid communication with at least one reforming catalyst and the second reforming reactor outlet, and is in heat transfer communication with the heat source;(b) the first reforming reactor outlet of the reforming reactor is in gas/fluid communication with the first heat exchanger;(c) the first heat exchanger is in gas/fluid communication with the first-pass water-gas shift reactor;(d) the first-pass water-gas shift reactor is in gas/fluid communication with the inlet of the second first-pass water-gas shift reactor;(e) the hydrogen-permeable hydrogen-selective membrane is located in the second first-pass water-gas shift reactor to permit gas/fluid communication of hydrogen in the second first-pass water-gas shift reactor with the hydrogen outlet of the membrane and to inhibit gas/fluid communication of a non-hydrogen gas with the hydrogen outlet;(f) the hydrogen-depleted gas outlet of the second first-pass water-gas shift reactor is in gas/fluid communication with the second feed inlet of the reforming reactor, where the hydrogen-depleted gas outlet is in gas/fluid communication with the second feed inlet of the reforming reactor through the second heat exchanger;(g) the second reforming reactor outlet of the reforming reactor is in gas/fluid communication with the second heat exchanger; and(h) the second heat exchanger is in gas/fluid communication with the second-pass water-gas shift reactor. 6. The system of claim 1, further comprising: a hydrogen-carbon dioxide separation unit;where,(i) optionally, an additional second-pass water-gas shift reactor is in gas/fluid communication with the second-pass water-gas shift reactor; and(i) the second-pass water-gas shift reactor is in gas/fluid communication with the hydrogen-carbon dioxide separation unit or, if an additional second-pass water-gas shift reactor is present in the system, the additional second-pass water-gas shift reactor is in gas/fluid communication with the hydrogen-carbon dioxide separation unit. 7. The system of claim 6, wherein the hydrogen-carbon dioxide separation unit comprises a hydrogen gas separation membrane that is hydrogen-permeable and hydrogen-selective. 8. The system of claim 7 wherein the hydrogen gas separation membrane is located within the additional second-pass water-gas shift reactor. 9. The system of claim 6, wherein the hydrogen-carbon dioxide separation unit comprises a pressure swing adsorption apparatus.
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