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1. 发明授权

US5354547A Hydrogen recovery by adsorbent membranes 失效
标题翻译：通过吸附膜回收氢气
公开(公告)号：US5354547A
公开(公告)日：1994-10-11
申请号：US923768
申请日：1992-08-03
申请人： Madhukar B. Rao , Shivaji Sircar , Joseph M. Abrardo , William F. Baade
发明人： Madhukar B. Rao , Shivaji Sircar , Joseph M. Abrardo , William F. Baade
IPC分类号： B01D53/22 , B01D69/10 , B01D69/12 , B01D69/14 , B01D71/02 , C01B3/50 , C10G70/04 , B01D59/10
CPC分类号： B01D53/22 , B01D53/228 , B01D53/229 , B01D67/0046 , B01D67/0072 , B01D67/0088 , B01D69/04 , B01D69/10 , B01D69/12 , B01D69/141 , B01D71/02 , B01D71/028 , C01B3/501 , C10G70/045 , B01D2323/00 , B01D2323/08 , C01B2203/0405 , C01B2203/048
摘要： A composite semipermeable membrane comprising microporous adsorbent material supported by a porous substrate is operated in series with a pressure swing adsorption (PSA) system and the PSA reject gas is used as a sweep gas to improve membrane performance. The integrated membrane-PSA system is particularly useful for recovering high-purity hydrogen from a mixture of hydrogen and hydrocarbons, and is well-suited for integration with a steam-methane reformer.
摘要翻译：包含由多孔基材支撑的微孔吸附剂材料的复合半透膜与变压吸附（PSA）系统串联操作，PSA废气用作吹扫气体以改善膜性能。综合膜PSA系统特别适用于从氢气和碳氢化合物的混合物中回收高纯度氢气，非常适合与蒸汽 - 甲烷重整器集成。

2. 发明授权

US5332424A Hydrocarbon fractionation by adsorbent membranes 失效
$Hydrocarbon fractionation by adsorbent membranes$
标题翻译：通过吸附膜分离碳氢化合物
公开(公告)号：US5332424A
公开(公告)日：1994-07-26
申请号：US98654
申请日：1993-07-28
申请人： Madhukar B. Rao , Shivaji Sircar , Joseph M. Abrardo , William F. Baade
发明人： Madhukar B. Rao , Shivaji Sircar , Joseph M. Abrardo , William F. Baade
IPC分类号： B01D53/22 , F25J3/02 , B01D53/04
CPC分类号： B01D53/229 , B01D53/226
摘要： A method is disclosed for separating a multicomponent gas mixture comprising at least three components into three product streams by use of adsorbent membrane zones operating in series. Each product is enriched in a different component based upon the relative strength of adsorption of each component on the adsorbent material. A non-permeate primary component product is obtained by the selective adsorption and permeation through the adsorbent membranes of secondary components which are more strongly adsorbed than the primary components in the gas mixture. Two or more permeate streams enriched in the more strongly adsorbed components are withdrawn from the membrane zones as individual secondary products, each of which contains a different component distribution determined by the relative strength of adsorption of the secondary components on the adsorbent material. Increased recovery and product purity are realized by the integration of pressure swing adsorption (PSA) and cryogenic separation systems with the adsorbent membrane zones. PSA reject gas is used as a membrane sweep gas to increase the permeation rates of secondary components.
摘要翻译：公开了一种通过使用串联操作的吸附膜区域将包含至少三个组分的多组分气体混合物分离成三个产物流的方法。基于吸附材料上每种组分的吸附的相对强度，每种产品富含不同的组分。通过选择性吸附和渗透通过比气体混合物中主要组分更强吸附的次要组分的吸附剂膜获得非渗透性主要组分产物。富集更强吸附组分的两个或多个渗透物流作为单独的次级产物从膜区域中排出，每个次级产物含有由吸附剂材料上的次要组分的吸附的相对强度确定的不同组分分布。通过将变压吸附（PSA）和低温分离系统与吸附剂膜区域整合来实现提高回收率和产物纯度。 PSA废气用作膜吹扫气体以增加次要组分的渗透速率。

3. 发明授权

US5447559A Hydrogen recovery by adsorbent membranes 失效
标题翻译：通过吸附膜回收氢气
公开(公告)号：US5447559A
公开(公告)日：1995-09-05
申请号：US288168
申请日：1994-08-10
申请人： Madhukar B. Rao , Shivaji Sircar , Joseph M. Abrardo , William F. Baade
发明人： Madhukar B. Rao , Shivaji Sircar , Joseph M. Abrardo , William F. Baade
IPC分类号： B01D53/22 , B01D69/10 , B01D69/12 , B01D69/14 , B01D71/02 , C01B3/50 , C10G70/04 , B01D53/047
CPC分类号： B01D53/22 , B01D53/228 , B01D53/229 , B01D67/0046 , B01D67/0072 , B01D67/0088 , B01D69/04 , B01D69/10 , B01D69/12 , B01D69/141 , B01D71/02 , B01D71/028 , C01B3/501 , C10G70/045 , B01D2323/00 , B01D2323/08 , C01B2203/0405 , C01B2203/048
摘要： A composite semipermeable membrane comprising microporous adsorbent material supported by a porous substrate is operated in series with a pressure swing adsorption (PSA) system and the PSA reject gas is used as a sweep gas to improve membrane performance. The integrated membrane-PSA system is particularly useful for recovering high-purity hydrogen from a mixture of hydrogen and hydrocarbons, and is well-suited for integration with a steam-methane reformer.
摘要翻译：包含由多孔基材支撑的微孔吸附剂材料的复合半透膜与变压吸附（PSA）系统串联操作，PSA废气用作吹扫气体以改善膜性能。综合膜PSA系统特别适用于从氢气和碳氢化合物的混合物中回收高纯度氢气，非常适合与蒸汽 - 甲烷重整器集成。

4. 发明授权

US5104425A Gas separation by adsorbent membranes 失效
标题翻译：吸附膜气体分离
公开(公告)号：US5104425A
公开(公告)日：1992-04-14
申请号：US724063
申请日：1991-07-01
申请人： Madhukar B. Rao , Shivaji Sircar , Timothy C. Golden
发明人： Madhukar B. Rao , Shivaji Sircar , Timothy C. Golden
IPC分类号： B01D53/22 , B01D69/10 , B01D69/12 , B01D69/14 , B01D71/02 , C10G70/04
CPC分类号： B01D67/0088 , B01D53/22 , B01D53/228 , B01D67/0072 , B01D69/02 , B01D69/10 , B01D69/12 , B01D69/141 , B01D71/02 , B01D71/021 , B01D71/028 , C10G70/045 , B01D2325/04 , Y10S55/05
摘要： Composite semipermeable membranes comprising porous adsorptive material supported by a porous substrate are disclosed for use in a process for the separation of multicomponent gas mixtures. In the process, one or more primary components adsorb within the pores of the adsorptive material and diffuse by surface flow through the membrane to yield a permeate stream enriched in one or more of the primary components. Methods for making the composite membranes are described.
摘要翻译：公开了用于分离多组分气体混合物的方法的包含由多孔基材支撑的多孔吸附材料的复合半透膜。在该过程中，一个或多个主要组分吸附在吸附材料的孔内并通过表面流扩散通过膜以产生富含一种或多种主要组分的渗透物流。描述制备复合膜的方法。

5. 发明授权

US5507860A Composite porous carbonaceous membranes 失效
标题翻译：复合多孔碳质膜
公开(公告)号：US5507860A
公开(公告)日：1996-04-16
申请号：US226731
申请日：1994-04-12
申请人： Madhukar B. Rao , Shivaji Sircar , Timothy C. Golden
发明人： Madhukar B. Rao , Shivaji Sircar , Timothy C. Golden
IPC分类号： B01D53/22 , B01D69/10 , B01D69/12 , B01D69/14 , B01D71/02 , B01J20/28 , C04B38/00 , C04B41/50 , C04B41/85 , C10G70/04 , C01B31/08
CPC分类号： B01J20/28033 , B01D53/22 , B01D53/228 , B01D67/0067 , B01D67/0088 , B01D69/10 , B01D69/12 , B01D69/141 , B01D71/021 , B01D71/028 , B01J20/28026 , B01J20/2808 , B01J20/28097 , C04B38/0022 , C04B41/5001 , C04B41/85 , C10G70/045 , B01D2323/08 , B01D2325/04 , Y10S264/48 , Y10S55/05
摘要： Improved composite semipermeable membranes including microporous carbonaceous adsorptive material supported by a porous substrate for use in separating multicomponent gas mixtures in which certain components in the mixture adsorb within the pores of the adsorptive material and diffuse by surface flow through the membrane to yield a permeate stream enriched in these components. Methods for making the improved composite membranes are described including one or more oxidation steps which increase the membrane permeability and selectivity.
摘要翻译：改进的复合半透膜包括由多孔基材支撑的微孔碳质吸附材料，用于分离多组分气体混合物，其中混合物中的某些组分吸附在吸附材料的孔内并通过表面流扩散通过膜以产生富集的渗透物流在这些组件中。描述了制备改进的复合膜的方法，其包括增加膜渗透性和选择性的一个或多个氧化步骤。

6. 发明授权

US5507856A Hydrogen recovery by adsorbent membranes 失效
标题翻译：通过吸附膜回收氢气
公开(公告)号：US5507856A
公开(公告)日：1996-04-16
申请号：US303252
申请日：1994-09-08
申请人： Madhukar B. Rao , Shivaji Sircar
发明人： Madhukar B. Rao , Shivaji Sircar
IPC分类号： B01D53/047 , B01D53/04 , B01D53/22 , B01D69/10 , B01D69/12 , B01D69/14 , B01D71/02 , C01B3/50 , C10G70/04
CPC分类号： B01D53/228 , B01D53/22 , B01D53/229 , B01D67/0046 , B01D69/04 , B01D69/10 , B01D69/12 , B01D69/141 , B01D71/02 , B01D71/028 , C01B3/501 , C10G70/045 , B01D2323/08 , C01B2203/0405 , C01B2203/047 , C01B2203/0475 , C01B2203/048 , C01B2203/0495
摘要： A composite semipermeable membrane comprising microporous adsorbent material supported by a porous substrate is utilized to separate hydrogen-hydrocarbon mixtures and a sweep gas comprising some of the same hydrocarbons is passed across the low pressure side of the membrane to enhance hydrocarbon permeability. Methane is an effective sweep gas which promotes the permeation of heavier hydrocarbons even when methane is present in the membrane feed.
摘要翻译：包括由多孔基材支撑的微孔吸附剂材料的复合半透膜用于分离氢 - 烃混合物，并且包括一些相同烃的吹扫气体通过膜的低压侧以提高烃渗透性。甲烷是一种有效的吹扫气体，即使在膜进料中存在甲烷时，也能促进较重烃的渗透。

7. 发明授权

US5431864A Method of making composite porous carbonaceous membranes 失效
标题翻译：制造复合多孔碳膜的方法
公开(公告)号：US5431864A
公开(公告)日：1995-07-11
申请号：US229081
申请日：1994-04-18
申请人： Madhukar B. Rao , Shivaji Sircar , Timothy C. Golden
发明人： Madhukar B. Rao , Shivaji Sircar , Timothy C. Golden
IPC分类号： B01D53/22 , B01D69/10 , B01D69/12 , B01D69/14 , B01D71/02 , B01J20/28 , C04B38/00 , C04B41/50 , C04B41/85 , C10G70/04 , B29L31/14 , C01B31/08
CPC分类号： B01J20/28033 , B01D53/22 , B01D53/228 , B01D67/0067 , B01D67/0088 , B01D69/10 , B01D69/12 , B01D69/141 , B01D71/021 , B01D71/028 , B01J20/28026 , B01J20/2808 , B01J20/28097 , C04B38/0022 , C04B41/5001 , C04B41/85 , C10G70/045 , B01D2323/08 , B01D2325/04 , Y10S264/48 , Y10S55/05
摘要： Improved composite semipermeable membranes including microporous carbonaceous adsorptive material supported by a porous substrate for use in separating multicomponent gas mixtures in which certain components in the mixture adsorb within the pores of the adsorptive material and diffuse by surface flow through the membrane to yield a permeate stream enriched in these components. Methods for making the improved composite membranes are described including one or more oxidation steps which increase the membrane permeability and selectivity.
摘要翻译：改进的复合半透膜包括由多孔基材支撑的微孔碳质吸附材料，用于分离多组分气体混合物，其中混合物中的某些组分吸附在吸附材料的孔内并通过表面流扩散通过膜以产生富集的渗透物流在这些组件中。描述了制备改进的复合膜的方法，其包括增加膜渗透性和选择性的一个或多个氧化步骤。

8. 发明授权

US5435836A Hydrogen recovery by adsorbent membranes 失效
标题翻译：通过吸附膜回收氢气
公开(公告)号：US5435836A
公开(公告)日：1995-07-25
申请号：US173457
申请日：1993-12-23
申请人： Madhu Anand , Madhukar B. Rao , Shivaji Sircar
发明人： Madhu Anand , Madhukar B. Rao , Shivaji Sircar
IPC分类号： B01D53/22 , C01B3/50 , C01B3/56 , B01D53/047
CPC分类号： B01D53/229 , C01B3/501 , C01B3/56 , C01B2203/0405 , C01B2203/043 , C01B2203/047 , C01B2203/0475 , C01B2203/048
摘要： Recovery of hydrogen from hydrogen-containing gas mixtures by pressure swing adsorption is increased by utilizing an adsorbent membrane to concentrate hydrogen in the pressure swing adsorption reject gas and recycling the resulting hydrogen-enriched stream to the feed of the pressure swing adsorption system. Lower compression requirements are realized compared with the use of polymeric membranes for the same service because the hydrogen-enriched stream is recovered from the adsorbent membrane as nonpermeate at essentially the membrane feed pressure. Simultaneous permeation of carbon dioxide and methane occur in the adsorbent membrane, which can be operated at feed pressures as low as 5 psig when hydrogen is used as a sweep gas.
摘要翻译：通过利用吸附剂膜将氢气在变压吸附废气中浓缩并将所得富氢物流再循环到变压吸附系统的进料中，通过变压吸附从含氢气体混合物中回收氢。与使用相同服务的聚合物膜相比，实现了较低的压缩要求，因为在基本上膜进料压力下，富集的流从吸附膜回收为非渗透性。在吸附剂膜中同时渗透二氧化碳和甲烷，当氢气用作吹扫气体时，其可以在低至5psig的进料压力下操作。

9. 发明授权

US5116510A Separation of liquid mixtures by thermal swing adsorption 失效
标题翻译：通过热变形吸附分离液体混合物
公开(公告)号：US5116510A
公开(公告)日：1992-05-26
申请号：US696476
申请日：1991-05-06
申请人： Shivaji Sircar , Madhukar B. Rao
发明人： Shivaji Sircar , Madhukar B. Rao
IPC分类号： B01D15/00
CPC分类号： B01D15/00
摘要： A new thermal swing adsorption process for the separation of a bulk liquid mixture into its respective components wherein a novel rinse step is employed to achieve high product recovery with a low energy of separation. The invention is particularly useful for separating liquid mixtures containing azeotropes or close-boiling components which are difficult to separate using conventional techniques such as distillation or routine termal swing adsorption. A given example is the separation and recovery of methyl acetate from a bulk liquid mixture containing methyl acetate and water.

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