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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0634576 (1990-12-27) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 237 인용 특허 : 0 |
A diffusion process from steam reforming of a hydrocarbon to produce H2, Co and CO2, that includes: providing a generally tubular, porous, ceramic membrane, and providing a heated reaction zone in a container into which the membrane is received; the membrane carrying a catalytically active metallic
A diffusion process from steam reforming of a hydrocarbon to produce H2, Co and CO2, that includes: providing a generally tubular, porous, ceramic membrane, and providing a heated reaction zone in a container into which the membrane is received; the membrane carrying a catalytically active metallic substance; passing a hydrocarbon and steam containing first fluid stream into the zone and into contact with one side of the membrane, to produce CO, CO2 and H2; and passing a second fluid stream adjacent the opposite side of the membrane in such manner as to promote hydrogen diffusion through the membrane from said one side to said opposite side thereof; and removing hydrogen from the opposite side of the membrane. Such a process may be combined with operation of a heat engine or gas turbine, producing heat transferred to the referenced reaction zone.
The process for steam reforming of a hydrocarbon to produce H2, CO and CO2, that includes: a) providing a generally tubular, porous, catalytic ceramic membrane, and providing a heated reaction zone in a container into which said membrane is received, b) said membrane carrying a catalytically active
The process for steam reforming of a hydrocarbon to produce H2, CO and CO2, that includes: a) providing a generally tubular, porous, catalytic ceramic membrane, and providing a heated reaction zone in a container into which said membrane is received, b) said membrane carrying a catalytically active metallic substance, c) passing a first fluid stream of hydrocarbon and steam into said zone and into contact with one side of said catalytic ceramic membrane, to produce CO2, CO and H2, said first stream including between about 5% and 10% hydrogen and being at pressure between 15 psia and 2,000 psia, d) and separately passing a second fluid stream including steam adjacent to said opposite side of said membrane in such manner as to promote hydrogen diffusion through said membrane from said one side to the opposite side thereof, thereby causing more complete conversion of said originally supplied hydrocarbon, e) removing hydrogen from said opposite side of said membrane, f) maintaining a heated, porous catalytic bed extending lengthwise adjacent said membrane, in said zone, transferring heat into said bed lengthwise thereof and via said container, and passing said first stream into said bed for flow in contact with the bed and heating therein followed by first stream contact said one side of the membrane, said bed including pellets of said catalytically active substance in said zone, g) operating a gas turbine or gas engine to produce hot exhaust gases; and transferring heat from said hot gases through said container into said reaction zone, so as to maintain temperatures or temperature at the tube between 300°and 750°C., h) and directing H2 derived from at least one of said sides of the membrane to said gas turbine or gas engine as fuel therefor. In apparatus for steam reforming of a hydrocarbon to produce H2, CO and CO2, the combination that includes: a) a generally tubular, porous, ceramic membrane, and first means providing a heated reaction zone in a container into which said membrane is received, b) said membrane carrying a catalytically active metallic substance, c) second means for passing a hydrocarbon and steam containing first fluid stream into said zone and into contact with one side of said membrane, to produce CO, CO2, and H2, d) and third means for separately passing a steam containing second fluid stream adjacent said opposite side of said membrane in such manner as to promote hydrogen diffusion through said membrane from said one side to the opposite side thereof, e) fourth means for removing hydrogen and steam from said opposite side of said membrane, f) said first means including a heated, porous catalytic bed extending lengthwise adjacent said membrane, in said reaction zone, the container transferring heat into said bed lengthwise thereof, said first fluid stream passing into said bed for flow in contact with the bed and heating therein followed by first stream contact with said one side of the membrane, said bed including pellets of said catalytically active substance in said zone, the container capable of being heated to transfer heat to said pellets, and means for maintaining the temperature at the tube between 300°and 750°C. by said heat transfer and by said steam in said zone, g) and means for using diffused H2 for combustion to provide heat transferred via the container to the membrane.
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