Hydrogen purification membranes, components and fuel processing systems containing the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01D-053/22
C01B-003/26
출원번호
US-0598295
(2012-08-29)
등록번호
US-8636828
(2014-01-28)
발명자
/ 주소
Edlund, David J.
Pledger, William A.
Studebaker, R. Todd
출원인 / 주소
DCNS SA
대리인 / 주소
Dascenzo Intellectual Property Law, P.C.
인용정보
피인용 횟수 :
0인용 특허 :
181
초록▼
Hydrogen-producing fuel processing systems, hydrogen purification membranes, hydrogen purification devices, fuel processing and fuel cell systems that include hydrogen purification devices, and methods for operating the same. In some embodiments, operation of the fuel processing system is initiated
Hydrogen-producing fuel processing systems, hydrogen purification membranes, hydrogen purification devices, fuel processing and fuel cell systems that include hydrogen purification devices, and methods for operating the same. In some embodiments, operation of the fuel processing system is initiated by heating at least the reforming region of the fuel processing system to at least a selected hydrogen-producing operating temperature. In some embodiments, an electric heater is utilized to perform this initial heating. In some embodiments, use of the electric heater is discontinued after startup, and a burner or other combustion-based heating assembly combusts a fuel to heat at least the hydrogen producing region, such as due to the reforming region utilizing an endothermic catalytic reaction to produce hydrogen gas.
대표청구항▼
1. A hydrogen-producing fuel processing system, comprising: a hydrogen-producing reforming region containing a reforming catalyst that, when heated to a hydrogen-producing temperature, catalyzes the formation of a reformate stream containing hydrogen gas as a majority component from a reforming feed
1. A hydrogen-producing fuel processing system, comprising: a hydrogen-producing reforming region containing a reforming catalyst that, when heated to a hydrogen-producing temperature, catalyzes the formation of a reformate stream containing hydrogen gas as a majority component from a reforming feedstock;a purification region configured to receive the reformate stream and to separate the reformate stream into a product hydrogen stream and a byproduct stream, wherein the product hydrogen stream contains a greater concentration of hydrogen gas than the reformate stream, wherein the byproduct stream contains hydrogen gas having a lower concentration than the reformate stream, and wherein the purification region comprises: at least one tubular hydrogen-selective membrane containing a palladium alloy; wherein the product hydrogen stream includes hydrogen gas from the reformate stream that permeates through the tubular hydrogen-selective membrane; wherein the byproduct stream contains a portion of the reformate stream that does not pass through the tubular hydrogen-selective membrane;a purifier containing at least one carbon monoxide removal catalyst; wherein the purifier is configured to receive the byproduct stream and, when the byproduct stream contains carbon monoxide, to reduce the concentration of carbon monoxide therein via chemical reaction; anda combustion region configured to receive and combust the byproduct stream with air to produce a combustion exhaust stream to heat at least the hydrogen-producing reforming region to the hydrogen-producing temperature and to heat the purification region. 2. The hydrogen-producing fuel processing system of claim 1, wherein the purification region further comprises at least one tubular support configured to support the tubular hydrogen-selective membrane against deformation when exposed to a pressure differential between a pressure of the reformate stream and a pressure of the product hydrogen stream. 3. The hydrogen-producing fuel processing system of claim 2, wherein the at least one tubular support includes a spring. 4. The hydrogen-producing fuel processing system of claim 2, wherein the at least one tubular support includes a tubular metal support having apertures through which hydrogen gas that permeates through the tubular hydrogen-selective membrane may flow. 5. The hydrogen-producing fuel processing system of claim 2, wherein the at least one tubular support includes a porous ceramic support. 6. The hydrogen-producing fuel processing system of claim 1, wherein the tubular hydrogen-selective membrane includes a cap secured thereto by one or more of welding, ultrasonic welding, brazing, and diffusion bonding. 7. The hydrogen-producing fuel processing system of claim 6, wherein the tubular hydrogen-selective membrane includes a pair of caps secured thereto. 8. The hydrogen-producing fuel processing system of claim 1, wherein the purification region includes a plurality of the tubular hydrogen-selective membranes. 9. The hydrogen-producing fuel processing system of claim 1, wherein the fuel processing system further comprises at least one electric resistance heater configured to heat at least one of the reforming region, the purification region, the at least one tubular hydrogen-selective membrane, and the purifier to the hydrogen-producing temperature. 10. The hydrogen-producing fuel processing system of claim 1, wherein the reforming region and the purification region are contained within a shell within which the combustion exhaust stream from the combustion region flows. 11. The hydrogen-producing fuel processing system of claim 1, wherein the byproduct stream contains at least 20% of the hydrogen gas in the reformate stream. 12. The hydrogen-producing fuel processing system of claim 1, further comprising a vaporizing coil that receives the reforming feedstock as a liquid stream and in which the reforming feedstock is vaporized prior to delivery to the reforming region, wherein the vaporizing coil extends around the reforming region. 13. The hydrogen-producing fuel processing system of claim 12, wherein the reforming region is located within a shell, and further wherein the vaporizing coil extends in contact with the shell to be heated by radiation and thermal conduction from the shell. 14. The hydrogen-producing fuel processing system of claim 13, wherein the purification region also is located within the shell. 15. The hydrogen-producing fuel processing system of claim 1, further comprising an air heater configured to receive and preheat an air flow that is mixed with the byproduct stream for combustion of the byproduct stream to produce the combustion exhaust stream. 16. The hydrogen-producing fuel processing system of claim 1, further comprising a heat exchanger configured to preheat the reforming feedstock by heat exchange with the product hydrogen stream. 17. The hydrogen-producing fuel processing system of claim 1, in combination with a fuel cell stack configured to receive at least a portion of the product hydrogen stream. 18. The hydrogen-producing fuel processing system of claim 1, further comprising a feedstock supply containing the reforming feedstock; and further wherein the reforming feedstock comprises methanol and water. 19. The hydrogen-producing fuel processing system of claim 1, further comprising a feedstock supply containing the reforming feedstock; and further wherein the reforming feedstock comprises a hydrocarbon and water. 20. The hydrogen-producing fuel processing system of claim 1, wherein the reforming catalyst is configured to catalyze the formation of the reformate stream via at least one of a steam reforming reaction, an autothermal reforming reaction, a pyrolysis reaction, and a catalytic partial oxidation reaction.
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Edlund, David J.; Pledger, William A.; Studebaker, R. Todd, Hydrogen purification membranes, components and fuel processing systems containing the same.
Edlund, David J.; Pledger, William A.; Studebaker, R. Todd, Hydrogen purification membranes, components and fuel processing systems containing the same.
Edlund, David J.; Pledger, William A.; Studebaker, R. Todd, Hydrogen purification membranes, components and fuel processing systems containing the same.
Edlund, David J.; Pledger, William A.; Studebaker, R. Todd, Hydrogen purification membranes, components and fuel processing systems containing the same.
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