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公开(公告)号：US20240109825A1
公开(公告)日：2024-04-04
申请号：US18540167
申请日：2023-12-14
IPC分类号： C07C29/00 , B01D53/00 , B01D53/047 , B01D53/14 , B01J27/04
CPC分类号： C07C29/00 , B01D53/002 , B01D53/047 , B01D53/1475 , B01D53/1493 , B01J27/04 , B01D2252/20405 , B01D2252/20431 , B01D2252/20489 , B01D2253/1122 , B01D2257/102 , B01D2257/108 , B01D2257/304 , B01D2257/504 , B01D2257/7025
摘要： It has been discovered that mixed-alcohol production can utilize the waste tail gas stream from the pressure-swing adsorption section of an industrial hydrogen plant. Some variations provide a process for producing mixed alcohols, comprising: obtaining a tail-gas stream from a methane-to-syngas unit (e.g., a steam methane reforming reactor); compressing the tail-gas stream; separating the tail-gas stream into at least a syngas stream, a CO2-rich stream, and a CH4-rich stream; introducing the syngas stream into a mixed-alcohol reactor operated at effective alcohol synthesis conditions in the presence of an alcohol-synthesis catalyst, thereby generating mixed alcohols; and purifying the mixed alcohols to generate a mixed-alcohol product. Other variations provide a process for producing clean syngas, comprising: obtaining a tail-gas stream from a methane-to-syngas unit; compressing the tail-gas stream; separating the tail-gas stream into at least a syngas stream, a CO2-rich stream, and a CH4-rich stream; and recovering a clean syngas product.
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公开(公告)号：US20220144734A1
公开(公告)日：2022-05-12
申请号：US17521829
申请日：2021-11-08
IPC分类号： C07C29/00 , B01J27/04 , B01D53/047 , B01D53/14 , B01D53/00
摘要： It has been discovered that mixed-alcohol production can utilize the waste tail gas stream from the pressure-swing adsorption section of an industrial hydrogen plant. Some variations provide a process for producing mixed alcohols, comprising: obtaining a tail-gas stream from a methane-to-syngas unit (e.g., a steam methane reforming reactor); compressing the tail-gas stream; separating the tail-gas stream into at least a syngas stream, a CO2-rich stream, and a CH4-rich stream; introducing the syngas stream into a mixed-alcohol reactor operated at effective alcohol synthesis conditions in the presence of an alcohol-synthesis catalyst, thereby generated mixed alcohols; and purifying the mixed alcohols to generate a mixed-alcohol product. Other variations provide a process for producing clean syngas, comprising: obtaining a tail-gas stream from a methane-to-syngas unit; compressing the tail-gas stream; separating the tail-gas stream into at least a syngas stream, a CO2-rich stream, and a CH4-rich stream; and recovering a clean syngas product.
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公开(公告)号：US20240109827A1
公开(公告)日：2024-04-04
申请号：US18540194
申请日：2023-12-14
CPC分类号： C07C29/48 , C01B3/34 , C01B3/52 , C07C29/153 , C07C29/74 , C10L1/04 , C01B2203/0475 , C01B2203/061 , C01B2203/1241 , C01B2203/1258
摘要： Some variations provide a process for producing mixed alcohols, comprising: purifying a biogas feedstock to generate a renewable natural gas stream comprising methane; introducing the renewable natural gas stream into a methane-to-syngas unit operated at effective conditions to convert the methane to a first syngas stream containing at least H2, CO, and CO2; purifying the first syngas stream, including separating the CO2 from the first syngas stream, and optionally separating some of the H2 from the first syngas stream, thereby generating a clean syngas stream; introducing the clean syngas stream into a mixed-alcohol reactor operated at effective alcohol synthesis conditions with an alcohol-synthesis catalyst, thereby generating mixed alcohols; and purifying the mixed alcohols to generate a mixed-alcohol product. The mixed-alcohol product may be blended with a hydrocarbon fuel, such as gasoline, to produce a blended fuel. The blended fuel has significantly lower carbon intensity than the base hydrocarbon fuel.
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公开(公告)号：US20220234975A1
公开(公告)日：2022-07-28
申请号：US17578389
申请日：2022-01-18
摘要： Some variations provide a process for producing mixed alcohols, comprising: purifying a biogas feedstock to generate a renewable natural gas stream comprising methane; introducing the renewable natural gas stream into a methane-to-syngas unit operated at effective conditions to convert the methane to a first syngas stream containing at least H2, CO, and CO2; purifying the first syngas stream, including separating the CO2 from the first syngas stream, and optionally separating some of the H2 from the first syngas stream, thereby generating a clean syngas stream; introducing the clean syngas stream into a mixed-alcohol reactor operated at effective alcohol synthesis conditions with an alcohol-synthesis catalyst, thereby generating mixed alcohols; and purifying the mixed alcohols to generate a mixed-alcohol product. The mixed-alcohol product may be blended with a hydrocarbon fuel, such as gasoline, to produce a blended fuel. The blended fuel has significantly lower carbon intensity than the base hydrocarbon fuel.
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