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公开(公告)号：US4963339A
公开(公告)日：1990-10-16
申请号：US190281
申请日：1988-05-04
CPC分类号： F25J3/0266 , B01D53/047 , C01B3/48 , C01B3/56 , C01B31/20 , F25J3/0223 , F25J3/0252 , B01D2256/16 , B01D2256/22 , B01D2257/502 , B01D2257/504 , B01D2257/7025 , B01D2259/40001 , B01D2259/40016 , B01D2259/40032 , B01D2259/40037 , B01D2259/40052 , B01D2259/40066 , B01D2259/40069 , B01D2259/40079 , B01D2259/402 , B01D2259/404 , B01D53/0476 , C01B2203/0233 , C01B2203/0283 , C01B2203/043 , C01B2203/0475 , C01B2203/0495 , C01B2203/0811 , C01B2203/0822 , C01B2203/0827 , C01B2203/0877 , C01B2203/1241 , C01B2203/146 , C01B2203/148 , C01B2203/1628 , C01B2203/80 , F25J2200/02 , F25J2200/72 , F25J2205/40 , F25J2205/60 , F25J2210/04 , F25J2215/04 , F25J2220/82 , F25J2230/30 , F25J2270/90 , Y02C10/08 , Y02C10/12 , Y02C20/20 , Y02P20/128 , Y02P20/129 , Y02P20/152 , Y02P20/156
摘要： Highly purified gaseous hydrogen and liquid carbon dioxide are produced from a steam reformer/shift converter by passing the effluent from the latter through a multibed hydrogen PSA unit followed by an uncoupled carbon dioxide PSA unit. The carbon dioxide PSA unit produces a hydrogen-rich stream which is recycled to the feed to the steam reformer, a carbon dioxide-rich recycle stream which is recycled to the carbon dioxide PSA unit feed and a carbon dioxide-rich product stream which is introduced under pressure to a liquifier. A waste stream from the liquifier is recylced to the carbon dioxide PSA unit feed. A portion of the carbon dioxide-rich product stream is withdrawn from the compressor at a stage such that its pressure is higher than that of the carbon dioxide PSA unit and returned thereto as a cocurrent purge preceding bed regeneration to obtain product.
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公开(公告)号：US5234472A
公开(公告)日：1993-08-10
申请号：US849261
申请日：1992-03-11
IPC分类号： B01D53/047 , C01B3/56 , C01B23/00 , C01B32/40
CPC分类号： B01D53/047 , C01B23/00 , C01B3/56 , C01B31/18 , B01D2253/102 , B01D2253/108 , B01D2256/16 , B01D2256/18 , B01D2256/20 , B01D2256/22 , B01D2257/102 , B01D2257/502 , B01D2257/504 , B01D2257/7025 , B01D2257/80 , B01D2259/40001 , B01D2259/40003 , B01D2259/40016 , B01D2259/4003 , B01D2259/40032 , B01D2259/40037 , B01D2259/40045 , B01D2259/40052 , B01D2259/40062 , B01D2259/40067 , B01D2259/40069 , B01D2259/40071 , B01D2259/40081 , B01D2259/402 , B01D2259/404 , B01D2259/4065 , B01D2259/4146 , B01D53/0446 , B01D53/0476 , B01D53/261 , C01B2203/043 , C01B2203/0465 , C01B2203/047 , C01B2203/0475 , C01B2203/048 , Y02C10/08 , Y02C20/20 , Y02P20/152 , Y02P20/156
摘要： A process for separation of a gas mixture containing three components, e.g. a mixture comprising hydrogen, carbon monoxide and carbon dioxide produced by steam reforming a hydrocarbon, by pressure swing adsorption is disclosed. In one embodiment of the process, the gas mixture is sequentially passed through first and second adsorptive regions each of which adsorbs a second component more strongly than a first component but less strongly than a third component, a first fraction enriched in the first component is withdrawn from the downstream end of the second region, introduction of gas mixture to the first region is stopped and the second region is closed to the first region, a second fraction enriched in the second component is withdrawn first from the upstream end of the second adsorptive region while passing gas mixture enriched in the third component into the first region from its upstream end and then from the downstream end of the first region, and withdrawing a third fraction enriched in the third component from the upstream end of the first region. The separation process is also applicable to other gas mixtures such as a mixture of hydrogen, argon, methane and nitrogen commonly available as ammonia plant purge gas from which ammonia has been removed.
摘要翻译： 用于分离含有三种组分的气体混合物的方法，例如 公开了通过变压吸附通过蒸汽重整烃产生的氢，一氧化碳和二氧化碳的混合物。 在该方法的一个实施方案中，气体混合物顺序地通过第一和第二吸附区域，其中每个吸附区域比第一组分更强烈地吸附第二组分，但比第三组分强但不强，第一组分富集的第一组分被撤出 从第二区域的下游端开始停止向第一区域引入气体混合物，并且第二区域与第一区域闭合，从第二吸附区域的上游端首先取出富含第二组分的第二级分 同时将从第三部件中富含的第三组分的气体混合物从第一区域的上游端和下游端流入第一区域，并从第一区域的上游端抽出富含第三组分的第三级分。 分离过程也适用于其他气体混合物，例如氢，氩，甲烷和氮气的混合物，通常可作为从其中除去氨的氨设备吹扫气体获得。
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公开(公告)号：US5112590A
公开(公告)日：1992-05-12
申请号：US270927
申请日：1988-11-14
CPC分类号： C01B3/34 , B01D53/047 , C01B23/00 , C01B3/56 , C01B31/18 , B01D2253/102 , B01D2253/108 , B01D2256/16 , B01D2256/18 , B01D2256/20 , B01D2256/22 , B01D2256/245 , B01D2257/102 , B01D2257/11 , B01D2257/502 , B01D2257/504 , B01D2257/7025 , B01D2257/80 , B01D2259/40001 , B01D2259/40016 , B01D2259/4003 , B01D2259/40032 , B01D2259/40037 , B01D2259/40039 , B01D2259/40047 , B01D2259/40052 , B01D2259/40067 , B01D2259/40069 , B01D2259/40073 , B01D2259/403 , B01D2259/404 , B01D2259/4065 , B01D2259/4146 , B01D53/0476 , B01D53/261 , C01B2203/043 , C01B2203/0465 , C01B2203/047 , C01B2203/0475 , C01B2203/048 , C01B2203/0495 , Y02C10/08 , Y02C20/20 , Y02P20/152 , Y02P20/156
摘要： A process for separation of a gas mixture containing three components, e.g. a mixture comprising hydrogen, carbon monoxide and carbon dioxide produced by steam reforming a hydrocarbon, by pressure swing adsorption is disclosed. In one embodiment of the process, the gas mixture is sequentially passed through first and second adsorptive regions each of which adsorbs a second component more strongly than a first component but less strongly than a third component, a first fraction enriched in the first component is withdrawn from the downstream end of the second region, introduction of gas mixture to the first region is stopped and the second region is closed to the first region, a second fraction enriched in the second component is withdrawn first from the upstream end of the second adsorptive region while passing gas mixture enriched in the third component into the first region from its upstream end and then from the downstream end of the first region, and withdrawing a third fraction enriched in the third component from the upstream end of the first region. The separation process is also applicable to other gas mixtures such as a mixture of hydrogen, argon, methane and nitrogen commonly available as ammonia plant purge gas from which ammonia has been removed.
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公开(公告)号：US5000925A
公开(公告)日：1991-03-19
申请号：US522343
申请日：1990-05-11
IPC分类号： B01D53/047 , C01B3/48 , C01B3/56 , C01B32/50 , F25J3/02
CPC分类号： F25J3/0223 , B01D53/0476 , C01B3/48 , C01B3/56 , C01B31/20 , F25J3/0266 , B01D2256/16 , B01D2256/22 , B01D2257/108 , B01D2257/502 , B01D2257/504 , B01D2259/40001 , B01D2259/40015 , B01D2259/40022 , B01D2259/40032 , B01D2259/40037 , B01D2259/40052 , B01D2259/40066 , B01D2259/40071 , B01D2259/402 , C01B2203/0233 , C01B2203/0283 , C01B2203/043 , C01B2203/0475 , C01B2203/0495 , C01B2203/0811 , C01B2203/0877 , C01B2203/1241 , C01B2203/146 , C01B2203/148 , C01B2203/1628 , C01B2203/80 , F25J2200/02 , F25J2200/72 , F25J2205/40 , F25J2205/60 , F25J2210/04 , F25J2215/04 , F25J2220/82 , F25J2230/30 , F25J2245/02 , F25J2270/90 , Y02C10/08 , Y02C10/12 , Y02P20/152
摘要： Highly purified gaseous hydrogen and liquid carbon dioxide are produced from a steam reformer/shift converter by passing the effluent from the latter through a multibed hydrogen PSA unit followed by an uncoupled carbon dioxide PSA unit. The carbon dioxide PSA unit produces a hydrogen-rich stream which is recycled to the feed to the steam reformer, a carbon dioxide-rich recycle stream which is recycled to the carbon dioxide PSA unit feed and a carbon dioxide-rich product stream which is introduced under pressure to a liquifier. A waste stream from the liquifier is recycled to the carbon dioxide PSA unit feed. A portion of the carbon dioxide-rich product stream is withdrawn from the compressor at a stage such that its pressure is higher than that of the carbon dioxide PSA unit and returned thereto as a cocurrent purge preceding bed regeneration to obtain product.
摘要翻译： 通过将来自后者的流出物通过多碱氢PSA单元，然后通过未偶联的二氧化碳PSA单元，由蒸汽重整器/变换转换器产生高度纯化的气态氢气和液体二氧化碳。 二氧化碳PSA单元产生富氢流，其被再循环到蒸汽重整器的进料中，富含二氧化碳的循环物流被再循环到二氧化碳PSA单元进料和富含二氧化碳的产物流 在压力下进入液化器。 来自液化器的废物流被再循环到二氧化碳PSA单元进料中。 一部分富含二氧化碳的产物流从压缩机中排出，使得其压力高于二氧化碳PSA单元的压力，并作为并流吹扫在床再生之前返回，以获得产物。
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