(US20190055173) System and method for pyrolysis using a liquid metal catalyst 机翻标题: 暂无翻译,请尝试点击翻译按钮。

源语言标题
(US20190055173) System and method for pyrolysis using a liquid metal catalyst
公开号/公开日
US20190055173 / 2019-02-21
申请号/申请日
US15/681,522 / 2017-08-21
发明人
DESAI DIVYARAJRIVEST JESSICA LOUIS BAKER;
申请人
PALO ALTO RESEARCH CENTER;
主分类号
IPC分类号
C01B-003/26 C07C-004/04 C07C-004/06 C22C-009/00 C22C-019/00 C22C-038/00
摘要
(US20190055173) A process for decomposing a hydrocarbon-containing composition includes feeding the hydrocarbon-containing composition to a reactor containing a catalytically active molten metal or a catalytically active molten metal alloy, wherein the metal or alloy catalyzes a decomposition reaction of the hydrocarbon-containing composition into a hydrogen-rich gas phase and a solid carbon phase.The solid carbon phase is insoluble in the metal or alloy.The process may be a continuous process.
机翻摘要
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地址
代理人
代理机构
;
优先权号
2017US-15681522
主权利要求
(US20190055173) What is claimed is: 1. A process for decomposing a hydrocarbon-containing composition, the process comprising:  feeding the hydrocarbon-containing composition to a reactor containing a catalytically active molten metal or a catalytically active molten metal alloy, wherein the metal or alloy catalyzes a decomposition reaction of the hydrocarbon-containing composition into a hydrogen-rich gas phase and a solid carbon phase;  wherein the solid carbon phase is minimally soluble in the metal or alloy. 2. The process of claim 1, wherein the reactor is operated at a temperature of less than 1000° C.; and wherein the conversion efficiency of the process is greater than 50% 3. The process of claim 1, wherein the reactor is a bubble column reactor, a shallow film reactor, or a slurry reactor. 4. The process of claim 1, wherein the solid carbon phase forms a floating slag in the reactor; and wherein the process further comprises removing the floating slag. 5. The process of claim 1, wherein the reactor is connected to a gravity settler or a cyclone separator. 6. The process of claim 1, wherein the solid carbon phase comprises carbon fibers, graphene, diamond, glassy carbon, high-purity graphite, carbon nanotubes, carbon black, coke, or activated charcoal. 7. The process of claim 1, wherein the alloy comprises at least one catalyst element selected from the group consisting of nickel, iron, copper, zinc and palladium; and at least one carrier element selected from the group consisting of gallium, tin, bismuth and zinc. 8. The process of claim 1, wherein:  the reactor contains the catalytically active molten metal alloy and the alloy is a nickel gallium alloy, a copper-gallium alloy, an iron-gallium alloy, or any combination thereof; or  the reactor contains the catalytically active molten metal alloy and the alloy is a copper-tin alloy, a nickel-tin alloy, or any combination thereof; or  the reactor contains the catalytically active molten metal and the metal is zinc. 9. The process of claim 1, wherein the hydrocarbon-containing composition is fed to the reactor through a porous diffuser used to produce bubbles with a diameter in the range of from about 100 nm to about 10 mm. 10. The process of claim 1, wherein the hydrocarbon-containing composition is selected from:  the group consisting of natural gas, liquefied petroleum gas, naphtha, light crude oil, heavy crude oil, oil sands, shale oil, wood, biomass and other organic waste streams; or  the group consisting of straight or branched chain alkanes, alkenes, alkynes, arenes, or any combination thereof with a chain length of C1 to C20. 11. A process for decomposing a hydrocarbon-containing composition, the process comprising:  feeding the hydrocarbon-containing composition to a reactor containing a catalytically active molten metal or a catalytically active molten metal alloy; and  controlling an interfacial tension within the reactor by maintaining a dynamic equilibrium of oxide to optimize bubble surface area;  wherein the metal or alloy catalyzes a decomposition reaction of the hydrocarbon-containing composition into a hydrogen-rich gas phase and a solid carbon phase; and  wherein the solid carbon phase is minimally soluble in the metal or alloy. 12. The process of claim 11, wherein the interfacial tension is controlled by maintaining a selected degree of oxidation of the molten metal using at least one of the following:  (i) applying an electric field between a reactor wall of the reactor and the metal or alloy;  (ii) doping the hydrocarbon-containing composition with an oxidant; and  (iii) adding a solid oxidizing agent to the metal or alloy. 13. The process of claim 12, wherein the electric field is applied; and wherein the reactor is lined with an oxide ion donor. 14. The process of claim 12, wherein the oxide ion donor comprises at least one material selected from the group consisting of yttria, zirconia, ceria, scandia, and gadolinia. 15. The process of claim 12, wherein the hydrocarbon-containing composition is doped with the oxidant; and wherein the oxidant is oxygen or ozone. 16. A system for decomposing a hydrocarbon, the system comprising:  a reactor comprising   an internal volume for holding a catalytically active molten metal or a catalytically active molten metal alloy;   a member for delivering the hydrocarbon to the internal volume; and   an outlet for recovering a hydrogen-rich gas phase; and  a device for recovering a solid carbon phase. 17. The system of claim 16, wherein the reactor is a bubble column reactor, a shallow film reactor or a slurry reactor. 18. The system of claim 16, wherein:  the reactor contains the catalytically active molten metal alloy and the alloy is a nickel gallium alloy, a copper-gallium alloy, an iron-gallium alloy, or any combination thereof; or  the reactor contains the catalytically active molten metal alloy and the alloy is a copper-tin alloy, a nickel-tin alloy, or any combination thereof; or  the reactor contains the catalytically active molten metal and the metal is zinc. 19. The system of claim 16, wherein the hydrocarbon is provided in a hydrocarbon-containing composition selected from:  the group consisting of natural gas, liquefied petroleum gas, naphtha, light crude oil, heavy crude oil, oil sands, shale oil, wood, biomass and other organic waste streams; or  the group consisting of straight or branched chain alkanes, alkenes, alkynes, arenes, or any combination thereof with a chain length of C1 to C20. 20. The system of claim 16, further comprising:  a high aspect ratio structure within the reactor upon which the feed gas can attach to optimize bubble shape and/or to seed carbon deposition for efficient removal;  wherein the structure comprises silicon carbide, alumina, or quartz.
法律状态
PENDING
专利类型码
A1
国别省市代码
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