公开(公告)号：US06312658B1

公开(公告)日：2001-11-06

申请号：US08624149

申请日：1996-04-08

申请人： Jeffrey Raymond Hufton ,  Shivaji Sircar ,  William Frederick Baade ,  Joseph Michael Abrardo ,  Madhu Anand

发明人： Jeffrey Raymond Hufton ,  Shivaji Sircar ,  William Frederick Baade ,  Joseph Michael Abrardo ,  Madhu Anand

IPC分类号： C01B3118

CPC分类号： C01B3/56 ,  B01D53/02 ,  B01D2257/504 ,  B01D2259/402 ,  B01J8/0005 ,  B01J8/008 ,  B01J8/04 ,  B01J19/0006 ,  B01J20/02 ,  B01J20/0211 ,  B01J20/0225 ,  B01J20/0233 ,  B01J20/0237 ,  B01J20/041 ,  B01J20/06 ,  B01J20/08 ,  B01J20/103 ,  B01J20/18 ,  B01J20/3204 ,  B01J20/3236 ,  B01J2208/00132 ,  B01J2208/00141 ,  B01J2208/00274 ,  B01J2208/00309 ,  B01J2208/0053 ,  B01J2208/00539 ,  B01J2208/0061 ,  C01B3/38 ,  C01B32/40 ,  C01B2203/02 ,  C01B2203/0233 ,  C01B2203/0238 ,  C01B2203/0283 ,  C01B2203/0405 ,  C01B2203/042 ,  C01B2203/043 ,  C01B2203/047 ,  C01B2203/0475 ,  C01B2203/0495 ,  C01B2203/0883 ,  C01B2203/1058 ,  C01B2203/1064 ,  C01B2203/1082 ,  C01B2203/1241 ,  C01B2203/147 ,  C01B2203/148 ,  C01B2203/80 ,  Y02C10/08 ,  Y02P20/152 ,  Y02P20/52

摘要： The present invention is a process for producing an essentially pure carbon monoxide (CO) product and an essentially pure hydrogen product by reforming a hydrocarbon such as methane and steam in the presence of a reforming catalyst to produce a reformate product enriched in CO, carbon dioxide and hydrogen. The reformate is subjected to an integrated series of separation steps and carbon dioxide present in a portion of the waste effluent recovered from such series of spearation steps is shifted to CO in an integrated sorption enhanced reaction (SER) process.

摘要翻译： 本发明是通过在重整催化剂存在下重整烃如甲烷和蒸汽来生产基本上纯的一氧化碳（CO）产物和基本上纯的氢产物的方法，以产生富含CO，二氧化碳的重整产品 和氢气。 重整产物经受一系列分离步骤，存在于从这种串联步骤中回收的废液中的一部分二氧化碳在一体化吸附增强反应（SER）方法中转移到CO。

公开(公告)号：US06328945B1

公开(公告)日：2001-12-11

申请号：US08624148

申请日：1996-04-08

申请人： Jeffrey Raymond Hufton ,  Shivaji Sircar ,  William Frederick Baade ,  Joseph Michael Abrardo ,  Madhu Anand

发明人： Jeffrey Raymond Hufton ,  Shivaji Sircar ,  William Frederick Baade ,  Joseph Michael Abrardo ,  Madhu Anand

IPC分类号： C01B3118

CPC分类号： C01B3/56 ,  B01D53/02 ,  B01D2257/504 ,  B01D2259/402 ,  B01J8/0005 ,  B01J8/008 ,  B01J8/04 ,  B01J19/0006 ,  B01J20/02 ,  B01J20/0211 ,  B01J20/0225 ,  B01J20/0233 ,  B01J20/0237 ,  B01J20/041 ,  B01J20/06 ,  B01J20/08 ,  B01J20/103 ,  B01J20/18 ,  B01J20/3204 ,  B01J20/3236 ,  B01J2208/00132 ,  B01J2208/00141 ,  B01J2208/00274 ,  B01J2208/00309 ,  B01J2208/0053 ,  B01J2208/00539 ,  B01J2208/0061 ,  C01B3/38 ,  C01B32/40 ,  C01B2203/02 ,  C01B2203/0233 ,  C01B2203/0238 ,  C01B2203/0283 ,  C01B2203/0405 ,  C01B2203/042 ,  C01B2203/043 ,  C01B2203/047 ,  C01B2203/0475 ,  C01B2203/0495 ,  C01B2203/0883 ,  C01B2203/1058 ,  C01B2203/1064 ,  C01B2203/1082 ,  C01B2203/1241 ,  C01B2203/147 ,  C01B2203/148 ,  C01B2203/80 ,  Y02C10/08 ,  Y02P20/152 ,  Y02P20/52

摘要： A process for producing carbon monoxide (CO) by reforming methane and steam in the presence of a reforming catalyst to produce a reformate product enriched in CO, carbon dioxide (CO2) and hydrogen. CO2 in the enriched reformate is shifted to CO in an integrated sorption enhanced reaction (SER) cycle which employs a series of cyclic steps to facilitate reaction of CO2 and hydrogen at high conversion and to produce a CO-enriched product obtained at reactor feed pressure and at essentially constant flow rate. A series of adsorbent regeneration step including depressurization, purging and product pressurization are used to desorb water which is selectively adsorbed by the adsorbent during the shift reaction and to prepare the reactor for a subsequent process cycle.

摘要翻译： 一种通过在重整催化剂存在下重整甲烷和蒸汽来生产一氧化碳（CO）的方法，以生产富含CO，二氧化碳（CO 2）和氢的重整产物。 富集的重整产物中的CO 2在集成吸附增强反应（SER）循环中转移到CO，其采用一系列循环步骤以促进CO 2和氢在高转化率下的反应并产生在反应器进料压力下获得的富含CO的产物， 基本上恒定的流速。 一系列吸附剂再生步骤包括减压，净化和产物加压，用于解吸在转化反应期间被吸附剂选择性吸附的水，并为后续的工艺循环制备反应器。

公开(公告)号：US6103143A

公开(公告)日：2000-08-15

申请号：US225803

申请日：1999-01-05

申请人： Shivaji Sircar ,  Jeffrey Raymond Hufton ,  Shankar Nataraj

发明人： Shivaji Sircar ,  Jeffrey Raymond Hufton ,  Shankar Nataraj

IPC分类号： B01J8/00 ,  B01J8/06 ,  C01B3/38 ,  C01B3/56 ,  C07C1/02 ,  B01D59/26 ,  C01B3/24 ,  C01B3/26

CPC分类号： B01J8/067 ,  B01J8/008 ,  C01B3/382 ,  C01B3/56 ,  B01J2208/00212 ,  B01J2208/025 ,  C01B2203/0425 ,  C01B2203/0475 ,  C01B2203/141 ,  C01B2203/142 ,  C01B2203/145 ,  C01B2203/148 ,  C01B2203/82

摘要： In the steam reforming of hydrocarbon, particularly methane, under elevated temperature and pressure to produce hydrogen, a feed of steam and hydrocarbon is fed into a first reaction volume containing essentially only reforming catalyst to partially reform the feed. The balance of the feed and the reaction products of carbon dioxide and hydrogen are then fed into a second reaction volume containing a mixture of catalyst and adsorbent which removes the carbon dioxide from the reaction zone as it is formed. The process is conducted in a cycle which includes these reactions followed by countercurrent depressurization and purge of the adsorbent to regenerate it and repressurization of the reaction volumes preparatory to repeating the reaction-sorption phase of the cycle.

摘要翻译： 在烃，特别是甲烷的蒸汽重整中，在升高的温度和压力下产生氢气，将蒸汽和烃的进料进料到基本上仅含有重整催化剂的第一反应体积中以部分地改造进料。 然后将二氧化碳和氢气的进料和反应产物的余量进料到含有催化剂和吸附剂的混合物的第二反应体积中，从而形成二氧化碳，从反应区中除去二氧化碳。 该过程在包括这些反应的循环中进行，随后进行逆流减压和吹扫吸附剂再生，并且对反应体积进行再加压，以准备重复循环的反应 - 吸附阶段。

公开(公告)号：US06303092B1

公开(公告)日：2001-10-16

申请号：US08419317

申请日：1995-04-10

申请人： Madhu Anand ,  Shivaji Sircar ,  Brian Thomas Carvill

发明人： Madhu Anand ,  Shivaji Sircar ,  Brian Thomas Carvill

IPC分类号： C01B3118

CPC分类号： C01B3/56 ,  B01D53/02 ,  B01D2257/504 ,  B01D2259/402 ,  B01J8/0005 ,  B01J8/008 ,  B01J8/04 ,  B01J19/0006 ,  B01J20/02 ,  B01J20/0211 ,  B01J20/0225 ,  B01J20/0233 ,  B01J20/0237 ,  B01J20/041 ,  B01J20/06 ,  B01J20/08 ,  B01J20/103 ,  B01J20/18 ,  B01J20/3204 ,  B01J20/3236 ,  B01J2208/00132 ,  B01J2208/00141 ,  B01J2208/00274 ,  B01J2208/00309 ,  B01J2208/0053 ,  B01J2208/00539 ,  B01J2208/0061 ,  C01B3/38 ,  C01B32/40 ,  C01B2203/02 ,  C01B2203/0233 ,  C01B2203/0238 ,  C01B2203/0283 ,  C01B2203/0405 ,  C01B2203/042 ,  C01B2203/043 ,  C01B2203/047 ,  C01B2203/0475 ,  C01B2203/0495 ,  C01B2203/0883 ,  C01B2203/1058 ,  C01B2203/1064 ,  C01B2203/1082 ,  C01B2203/1241 ,  C01B2203/147 ,  C01B2203/148 ,  C01B2203/80 ,  Y02C10/08 ,  Y02P20/152 ,  Y02P20/52

摘要： The present invention is a process for operating equilibrium controlled reactions in continuous mode wherein a feedstock is reacted in a plurality of reactors containing an admixture of a desired process catalyst and an adsorbent to form a product which is selectively adsorbed by the adsorbent and an admixture containing a product which is withdrawn from the reactor. A series of separation steps is used to desorb the product which is selectively adsorbed by the adsorbent and to prepare the reactor for a subsequent process cycle. The process utilizes a novel series of adsorption and desorption steps to collect the less selectively adsorbed product in substantially pure form under relatively constant flow rate at feedstock pressure.

摘要翻译： 本发明是一种在连续模式下操作平衡控制反应的方法，其中原料在含有所需工艺催化剂和吸附剂的混合物的多个反应器中反应以形成被吸附剂选择性吸附的产物和含有 从反应器中取出的产物。 一系列分离步骤用于解吸吸附剂选择性吸附的产物，并为随后的工艺循环制备反应器。 该方法利用新的一系列吸附和解吸步骤，以在原料压力下以相对恒定的流速收集基本上纯的形式的较少选择性吸附的产物。

公开(公告)号：US5779768A

公开(公告)日：1998-07-14

申请号：US619846

申请日：1996-03-19

申请人： Madhu Anand ,  Shivaji Sircar ,  Augustine Ivanhoe Dalton

发明人： Madhu Anand ,  Shivaji Sircar ,  Augustine Ivanhoe Dalton

IPC分类号： B01D53/00 ,  B01D53/04 ,  B01D53/047

CPC分类号： B01D53/0462 ,  B01D53/002 ,  B01D2253/102 ,  B01D2253/104 ,  B01D2253/106 ,  B01D2253/108 ,  B01D2256/10 ,  B01D2256/16 ,  B01D2256/18 ,  B01D2257/708 ,  B01D2259/40047 ,  B01D2259/40056 ,  B01D2259/40081 ,  B01D2259/4009 ,  B01D2259/402

摘要： A condensable component present at low concentration in a feed gas mixture containing the condensable component and a noncondensable component is recovered by selective adsorption from the feed gas mixture in an adsorption step, the resulting adsorbed condensable component is desorbed by a heated purge gas in a regeneration step to yield a purge gas effluent enriched in desorbed condensable component, and the purge gas effluent is cooled to condense and recover the condensable component as a liquid. An improvement comprises, during a time period of the regeneration step in which the concentration of the condensable component in the purge gas effluent reaches a maximum value, (a) dividing the purge gas effluent into a first and a second portion, (b) cooling the first portion of the purge gas effluent to a temperature sufficient to condense substantially all of the condensable component present therein and recovering the resulting condensate therefrom, and (c) cooling a second portion of the purge gas effluent and combining the resulting cooled gas stream with the feed gas mixture to yield a total feed mixture for the adsorption step.

摘要翻译： 通过在吸附步骤中从进料气体混合物中选择性吸附来回收在含有可冷凝组分和不可冷凝组分的进料气体混合物中低浓度存在的可冷凝组分，所得吸附的可冷凝组分在再生中被加热的吹扫气体解吸 逐步产生富集解吸的可冷凝组分的吹扫气体流出物，并将吹扫气体流出物冷却以冷凝并回收可冷凝组分作为液体。 改进包括在再生步骤的时间段内，其中净化气体流出物中的可冷凝组分的浓度达到最大值，（a）将净化气体流出物分成第一和第二部分，（b）冷却 净化气体流出物的第一部分达到足以冷凝基本上所有可冷凝组分的温度并从其中回收所得的冷凝物，和（c）冷却第二部分吹扫气流出物并将所得到的冷却气流与 进料气体混合物以产生用于吸附步骤的总进料混合物。

公开(公告)号：US5753010A

公开(公告)日：1998-05-19

申请号：US736846

申请日：1996-10-28

申请人： Shivaji Sircar ,  William Emil Waldron ,  Madhu Anand ,  Madhukar Bhaskara Rao

发明人： Shivaji Sircar ,  William Emil Waldron ,  Madhu Anand ,  Madhukar Bhaskara Rao

IPC分类号： B01D53/047 ,  B01D53/22

CPC分类号： B01D53/047 ,  B01D2256/16 ,  B01D2257/50 ,  B01D2257/7022 ,  B01D2259/4006 ,  B01D53/0446

摘要： A method for increasing product recovery or reducing the size of steam methane reformer and pressure swing adsorption systems utilized for hydrogen production. A significant portion of the hydrogen in the PSA depressurization and purge effluent gas, which is otherwise burned as fuel in the reformer, is recovered and recycled to the PSA system to provide additional high purity hydrogen product. This is accomplished by processing selected portions of the depressurization and purge effluent gas in adsorbent membrane separators to increase hydrogen content for recycle to the PSA system. Remaining portions of the depressurization and purge effluent gas which contain lower concentrations of hydrogen are utilized for fuel value in the reformer.

摘要翻译： 一种用于提高产品回收率或减小用于氢气生产的蒸汽甲烷重整器和变压吸附系统的尺寸的方法。 回收再循环到PSA系统中的PSA减压和吹扫废气中的大部分氢，否则这些氢气作为燃料被燃烧，以提供额外的高纯度氢产物。 这是通过在吸附膜分离器中处理选定部分的减压和吹扫流出气体来实现的，以增加用于再循环到PSA系统中的氢含量。 含有较低浓度氢的减压和吹扫废气的剩余部分用于重整器中的燃料价值。

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。

公开(公告)号：US08226745B2

公开(公告)日：2012-07-24

申请号：US12769283

申请日：2010-04-28

申请人： Chai Siew-Wah ,  Shivaji Sircar ,  Mayuresh V. Kothare

发明人： Chai Siew-Wah ,  Shivaji Sircar ,  Mayuresh V. Kothare

IPC分类号： B01D53/047

CPC分类号： B01D53/0473 ,  A61M16/101 ,  A61M2202/0208 ,  A61M2202/03 ,  B01D2253/104 ,  B01D2253/106 ,  B01D2253/108 ,  B01D2253/304 ,  B01D2256/12 ,  B01D2257/102 ,  B01D2257/80 ,  B01D2259/40077 ,  B01D2259/4146 ,  B01D2259/4533 ,  B01J20/08 ,  B01J20/103 ,  B01J20/186 ,  B01J20/28052 ,  A61M2202/0007

摘要： Provided herein are new compact and miniature oxygen concentrator apparatus, as well as methods incorporating use of the apparatus. The apparatus and methods utilize selected cycle times, adsorbent specifications and novel conditions to produce a fast Pressure Swing Adsorption (“PSA”) system. The oxygen concentrator apparatus and methods herein have significant utility in the fields of biotechnology, engineering, and medicine. A particularly advantageous use of this invention is as a “snap on” portable oxygen concentrator, where piped compressed air is already available such as in civil and military hospitals, ambulances, air craft cabins, mobile fish tanks, etc. Those embodiments eliminate the need for dedicated moving machinery (blower, compressor, vacuum pump) normally associated with a conventional PSA oxygen concentrator.

摘要翻译： 本文提供了新的紧凑型和微型氧气浓缩装置，以及结合使用该装置的方法。 该设备和方法利用选择的循环时间，吸附剂规格和新条件来产生快速压力摆动吸附（“PSA”）系统。 本发明的氧气浓缩装置和方法在生物技术，工程，医药领域具有重要的实用价值。 本发明的特别有利的用途是作为“快速”便携式氧气浓缩器，其中管道压缩空气已经可用，例如在民用和军用医院，救护车，飞机舱，移动鱼缸等中。这些实施例消除了需要 通常与常规PSA氧浓缩器相关联的专用移动机械（鼓风机，压缩机，真空泵）。

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。

公开(公告)号：US5030775A

公开(公告)日：1991-07-09

申请号：US502093

申请日：1990-03-30

申请人： Shivaji Sircar

发明人： Shivaji Sircar

IPC分类号： C07C29/76

CPC分类号： C07C29/76

摘要： A process for preparing motor fuel grade alcohol wherein an ethanol fermentation reactor effluent is distilled to produce an overhead product comprising 10 to about 40 mole percent ethanol and a bottom product comprising the non-alcoholic components. The motor fuel grade alcohol is recovered in high yield from the ethanol/water overhead product mixture in a liquid phase cyclic selective adsorption process which comprises a plurality of adsorption columns operated in cycle in a predetermined time sequence, each adsorption column containing an adsorbent, wherein each respective adsorption column undergoes successive steps of adsorption, desorption and rinsing.

摘要翻译： 一种制备马达燃料级醇的方法，其中将乙醇发酵反应器流出物蒸馏以产生包含10至约40摩尔％乙醇的塔顶产物和包含非醇组分的底部产物。 在液相循环选择性吸附方法中，从乙醇/水塔顶产物混合物中以高产率回收汽油燃料级酒精，其包括以预定时间顺序循环运行的多个吸附塔，每个吸附塔含有吸附剂，其中 每个相应的吸附柱经历吸附，解吸和漂洗的连续步骤。