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公开(公告)号：US5630970A
公开(公告)日：1997-05-20
申请号：US448652
申请日：1995-05-24
申请人： Ingo Pinnau , Lora G. Toy , Carlos G. Casillas
发明人： Ingo Pinnau , Lora G. Toy , Carlos G. Casillas
CPC分类号： B01D67/0088 , B01D53/22 , B01D67/0097 , B29C71/00
摘要： A process for restoring the selectivity of high-flee-volume, glassy polymer membranes for condensable components over less-condensable components or non-condensable components of a gas mixture. The process involves exposing the membrane to suitable sorbent vapor, such as propane or butane, thereby reopening the microvoids that make up the free volume. The selectivity of an aged membrane may be restored to 70-100% of its original value. The selectivity of a membrane which is known to age over time can also be maintained by keeping the membrane in a vapor environment when it is not in use.
摘要翻译： 一种恢复高容量，玻璃状聚合物膜对于可冷凝组分对气体混合物的不可冷凝组分或不可冷凝组分的选择性的方法。 该方法包括将膜暴露于合适的吸附剂蒸气，例如丙烷或丁烷，从而重新打开构成自由体积的微孔。 老化膜的选择性可以恢复到其原始值的70-100％。 已知随着时间而老化的膜的选择性也可以通过在不使用时将膜保持在蒸气环境中来维持。
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公开(公告)号：US5611841A
公开(公告)日：1997-03-18
申请号：US536522
申请日：1995-09-29
CPC分类号： B01D63/103 , B01D53/22 , B01D63/10 , B01D2257/702 , B01D2313/086 , B01D2313/143
摘要： A gas-separation method for controlling vapor emissions. The method employs a spiral-wound membrane module, adapted to provide one or more feed-side baffles in the feed channel. The method may be used to control vapor emissions from a volatile liquid, and is particularly useful to control fuel vapors emitted during fuel transfer operations.
摘要翻译： 用于控制蒸汽排放的气体分离方法。 该方法采用螺旋卷绕膜组件，适于在进料通道中提供一个或多个进料侧挡板。 该方法可用于控制来自挥发性液体的蒸汽排放，并且特别适用于控制在燃料转移操作期间排出的燃料蒸气。
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公开(公告)号：US5558698A
公开(公告)日：1996-09-24
申请号：US410676
申请日：1995-03-27
CPC分类号： B01D69/02 , B01D53/22 , B01D53/226 , B01D53/228 , B01D53/268 , B01D71/80 , B01D2257/304
摘要： Improved processes for treating gas streams containing hydrogen sulfide and carbon dioxide, particularly natural gas streams. The processes rely on the availability of a membrane that maintains high hydrogen sulfide/methane selectivity and adequate hydrogen sulfide/carbon dioxide selectivity when measured with multicomponent gas mixtures at high pressure. The processes have three steps: an acid gas removal step, to remove both hydrogen sulfide and carbon dioxide from the primary gas stream; a membrane fractionation step, to separate hydrogen sulfide from carbon dioxide and create a highly hydrogen-sulfide-concentrated fraction; and a sulfur-fixing step.
摘要翻译： 用于处理含有硫化氢和二氧化碳，特别是天然气流的气流的改进方法。 这些方法依赖于在高压下用多组分气体混合物测量时保持高硫化氢/甲烷选择性和足够的硫化氢/二氧化碳选择性的膜的可用性。 该方法有三个步骤：酸性气体去除步骤，从主气流中除去硫化氢和二氧化碳; 膜分离步骤，从二氧化碳中分离出硫化氢并产生高度硫化氢浓缩的馏分; 和硫固定步骤。
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公开(公告)号：US5538535A
公开(公告)日：1996-07-23
申请号：US395046
申请日：1995-02-27
CPC分类号： B01D53/229 , B01D53/22 , B01D2257/20
摘要： A membrane process for separating chlorine from chlorine-containing gas streams is disclosed. The process employs a permselective membrane that is selective to chlorine and is stable in the long-term presence of chlorine. The process can be used to treat tail-gas from chlor-alkali plants, for example.
摘要翻译： 公开了一种用于从含氯气流中分离氯的膜方法。 该方法采用对氯有选择性的选择性选择性膜，并且在氯的长期存在下是稳定的。 该方法可用于处理来自氯碱植物的尾气。
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公开(公告)号：US5417847A
公开(公告)日：1995-05-23
申请号：US813194
申请日：1991-12-23
IPC分类号： B01D61/36
CPC分类号： B01D61/362
摘要： A pervaporation apparatus and process adapted to handle a diverse range of feed stream compositions and volumes. The apparatus includes a pervaporation unit and condenser, one or more tanks and a control system to direct liquid flows within the apparatus according to the chosen processing scheme. The apparatus and process can achieve separation performance comparable to a one-stage, two-stage, two-step or more complicated pervaporation system, including those in which two-phase permeates are produced.
摘要翻译： 一种渗透蒸发装置和适于处理各种进料流组合物和体积的方法。 该设备包括渗透蒸发单元和冷凝器，一个或多个罐和控制系统，用于根据所选择的处理方案在设备内引导液体流。 该设备和方法可以实现与一阶段，两阶段，两步或更复杂的渗透蒸发系统相当的分离性能，包括其中生产两相渗透物的那些系统。
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公开(公告)号：US5199962A
公开(公告)日：1993-04-06
申请号：US837244
申请日：1992-02-14
申请人： Johannes G. Wijmans
发明人： Johannes G. Wijmans
IPC分类号： B01D53/22
CPC分类号： B01D53/22
摘要： A process for treating a gas stream to remove or recover a condensable component. The process involves a condensation step and a membrane concentration step. The condensation step may be followed by the membrane step, or vice versa. The process can be designed to yield only two product streams: one, the condensed liquid, ready for use, reuse or discard, and two, a residue gas stream which im most cases will be clean enough for direct discharge or reuse. This result is achieved by recycling other streams within the process. Recovery of 90% or more of the condensable component can be achieved. The process offers substantial energy savings compared with condensation alone.
摘要翻译： 一种处理气流以除去或回收可冷凝组分的方法。 该方法包括缩合步骤和膜浓缩步骤。 缩合步骤之后可以是膜步骤，反之亦然。 该方法可以设计成仅产生两种产物流：一种是冷凝液体，即可使用，再利用或丢弃，二是大多数情况下的残留气流将足够清洁以直接排放或再利用。 这个结果是通过回收过程中的其他流来实现的。 可以实现90％以上的可冷凝成分的回收。 与单独冷凝相比，该方法提供了显着的节能。
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公开(公告)号：US11813566B2
公开(公告)日：2023-11-14
申请号：US17315902
申请日：2021-05-10
发明人： Richard W. Baker
CPC分类号： B01D53/22 , B01D51/10 , B01D53/002 , B01D2257/504 , B01D2257/80 , B01D2258/0283 , B01D2311/04 , B01D2311/06 , B01D2311/106 , B01D2311/14 , B01D2311/25
摘要： Described herein are membrane processes for separating CO2 from flue gas. An exemplary process involves passing a fluid stream including the flue gas across a membrane permeable to CO2 and H2O, removing treated gas from a feed side of the membrane that has less CO2 than the flue gas, and removing permeate from a permeate side of the membrane comprising CO2 and H2O. Suitably, the permeate is removed at a sub-atmospheric vacuum pressure. The permeate is then cooled to remove at least some of the H2O from the permeate and form a smaller volume of H2O-depleted, CO2 enriched permeate.
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公开(公告)号：US11420155B2
公开(公告)日：2022-08-23
申请号：US16877425
申请日：2020-05-18
发明人： Milind M. Vaidya , Sebastien A. Duval , Feras Hamad , Richard Baker , Tim Merkel , Kaaeid Lokhandwala , Ivy Huang , Ahmad A. Bahamdan , Faisal D. Al-Otaibi
摘要： A process for sweetening a syngas stream, the process comprising the steps of: providing a syngas stream to a nonselective amine absorption unit, the sour syngas stream comprising syngas, carbon dioxide, and hydrogen sulfide; separating the syngas stream in the nonselective amine absorption unit to obtain an overhead syngas stream and an acid gas stream; introducing the acid gas stream to a membrane separation unit, the acid gas stream comprising hydrogen sulfide and carbon dioxide; separating the acid gas stream in the membrane separation unit to produce a retentate stream and a permeate stream, wherein the retentate stream comprises hydrogen sulfide, wherein the permeate stream comprises carbon dioxide; introducing the retentate stream to a sulfur recovery unit; processing the retentate stream in the sulfur recovery unit to produce a sulfur stream and a tail gas stream, wherein the sulfur stream comprises liquid sulfur.
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公开(公告)号：US09783467B2
公开(公告)日：2017-10-10
申请号：US15341830
申请日：2016-11-02
发明人： Paul Su
CPC分类号： C07C7/005 , B01D53/002 , B01D53/225 , B01D53/226 , B01D53/228 , B01D53/229 , B01D2256/24 , B01D2257/102 , B01D2257/108 , B01D2257/702 , C01B2203/0405 , C07C7/09 , C07C7/144 , F25J3/062 , F25J2205/02 , F25J2205/80 , F25J2210/04 , F25J2230/30 , F25J2230/60 , F25J2270/90 , Y02P20/582 , Y02P30/48 , C07C11/04 , C07C11/06
摘要： A process for treating an effluent gas stream arising from a manufacturing operation that produces an olefin or an olefin derivative to recover unreacted olefin. The process involves compressing the effluent gas stream, which comprises an olefin, a paraffin, and a third gas, to produce a first compressed stream, then directing the first compressed stream to a membrane separation pretreatment step. The permeate stream withdrawn from this step is enriched in olefin and is sent to a second compressor, which produces a second compressed stream that is then cooled and condensed. The condensation step produces a liquid condensate and an uncondensed gas stream. The uncondensed gas stream undergoes a second membrane separation step to produce another olefin-enriched permeate stream, which is recirculated within the process prior to the second compression step, and an olefin-depleted residue stream, which may be purged from the process.
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公开(公告)号：US20170050900A1
公开(公告)日：2017-02-23
申请号：US15341830
申请日：2016-11-02
发明人： Paul Su
CPC分类号： C07C7/005 , B01D53/002 , B01D53/225 , B01D53/226 , B01D53/228 , B01D53/229 , B01D2256/24 , B01D2257/102 , B01D2257/108 , B01D2257/702 , C01B2203/0405 , C07C7/09 , C07C7/144 , F25J3/062 , F25J2205/02 , F25J2205/80 , F25J2210/04 , F25J2230/30 , F25J2230/60 , F25J2270/90 , Y02P20/582 , Y02P30/48 , C07C11/04 , C07C11/06
摘要： A process for treating an effluent gas stream arising from a manufacturing operation that produces an olefin or an olefin derivative to recover unreacted olefin. The process involves compressing the effluent gas stream, which comprises an olefin, a paraffin, and a third gas, to produce a first compressed stream, then directing the first compressed stream to a membrane separation pretreatment step. The permeate stream withdrawn from this step is enriched in olefin and is sent to a second compressor, which produces a second compressed stream that is then cooled and condensed. The condensation step produces a liquid condensate and an uncondensed gas stream. The uncondensed gas stream undergoes a second membrane separation step to produce another olefin-enriched permeate stream, which is recirculated within the process prior to the second compression step, and an olefin-depleted residue stream, which may be purged from the process.
摘要翻译： 一种处理由生产烯烃或烯烃衍生物以回收未反应的烯烃的制造操作产生的流出气流的方法。 该方法包括压缩包含烯烃，石蜡和第三气体的废气流，以产生第一压缩流，然后将第一压缩流引导到膜分离预处理步骤。 从该步骤排出的渗透物流富含烯烃，并被送至第二压缩机，其产生第二压缩流，然后将其冷却并冷凝。 冷凝步骤产生液体冷凝物和未冷凝的气流。 未冷凝的气流经历第二膜分离步骤以产生另一种富烯烃的渗透物流，其在第二压缩步骤之前在该过程中再循环，以及可从该方法中清除的烯烃贫化残余物流。
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