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公开(公告)号:US5879431A
公开(公告)日:1999-03-09
申请号:US907187
申请日:1997-08-06
CPC分类号: B01D53/228 , B01D53/002 , B01D53/22 , B01D53/226 , B01D53/229 , B01D69/02 , B01D71/24 , B01D71/44 , B01D71/70 , F25J3/0209 , F25J3/0233 , F25J3/0242 , F25J3/0257 , F25J3/061 , F25J3/0635 , F25J3/0645 , F25J2205/40 , F25J2205/80 , F25J2240/12 , F25J2270/04
摘要: A membrane separation process for treating a gas stream containing methane and nitrogen, for example, natural gas. The separation process works by preferentially permeating methane and rejecting nitrogen. We have found that the process is able to meet natural gas pipeline specifications for nitrogen, with acceptably small methane loss, so long as the membrane can exhibit a methane/nitrogen selectivity of about 4, 5 or more. This selectivity can be achieved with some rubbery and super-glassy membranes at low temperatures. The process can also be used for separating ethylene from nitrogen.
摘要翻译: 一种用于处理含有甲烷和氮气的气流的膜分离方法,例如天然气。 分离过程通过优先渗透甲烷和排除氮气而起作用。 我们发现,该方法能够满足氮气的天然气管道规格,具有可接受的小的甲烷损失,只要膜可以显示出约4,5或更高的甲烷/氮选择性。 这种选择性可以通过一些橡胶状和超级玻璃膜在低温下实现。 该方法也可用于从氮气中分离乙烯。
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112.
公开(公告)号:US5817841A
公开(公告)日:1998-10-06
申请号:US890856
申请日:1997-07-10
IPC分类号: B01D53/22 , B01J19/00 , B01J19/24 , C07D301/08 , C07D303/00
CPC分类号: C07D301/08 , B01D53/22 , B01J19/2465 , B01J19/2475 , B01J2219/00051 , B01J2219/00085 , B01J2219/00103
摘要: A process and apparatus for ethylene oxide production. A membrane unit containing a membrane selectively permeable to ethylene over argon is used to recover ethylene from the argon purge stream.
摘要翻译: 用于环氧乙烷生产的方法和装置。 使用含有在氩气中可选择性渗透乙烯的膜的膜单元从氩吹扫流中回收乙烯。
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公开(公告)号:US5785739A
公开(公告)日:1998-07-28
申请号:US789376
申请日:1997-01-24
申请人: Richard W. Baker
发明人: Richard W. Baker
CPC分类号: F25J3/0252 , B01D53/002 , B01D53/229 , C01B3/501 , C01B3/506 , F25J3/0219 , F25J3/0233 , F25J3/0238 , F25J3/062 , F25J3/0635 , F25J3/064 , F25J3/0655 , C01B2203/046 , C01B2203/048 , F25J2205/02 , F25J2205/04 , F25J2205/80 , F25J2210/12 , F25J2245/02 , F25J2270/60 , Y02P30/462 , Y02P30/48
摘要: The invention is a process for treating a gas stream from ethylene or propylene production, or any other stream containing low molecular weight olefin gases and other hydrocarbons, to separate hydrogen and methane from the C.sub.2+ hydrocarbons. The invention involves three separation steps: condensation, flash evaporation and membrane separation. The steps are integrated together in such a way as to provide a good separation between the components, and to avoid creation of secondary streams that need additional treatment.
摘要翻译: 本发明是用于处理来自乙烯或丙烯生产的气流或含有低分子量烯烃气体和其它烃的任何其它物流从C2 +烃分离出氢和甲烷的方法。 本发明涉及三个分离步骤:冷凝,闪蒸和膜分离。 这些步骤以这样的方式集成在一起,以便在组件之间提供良好的分离,并且避免产生需要额外处理的二次流。
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114.
公开(公告)号:US5762685A
公开(公告)日:1998-06-09
申请号:US788629
申请日:1997-01-24
CPC分类号: B01D53/002 , B01D53/229
摘要: A process for recovering organic components from gas streams by condensation. The process uses a semipermeable separation membrane as an expansion device to provide cooling for condensation.
摘要翻译: 通过冷凝从气流中回收有机成分的方法。 该方法使用半透膜分离膜作为冷凝用于冷凝的膨胀装置。
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公开(公告)号:US5711882A
公开(公告)日:1998-01-27
申请号:US536633
申请日:1995-09-29
CPC分类号: B01D63/103 , B01D53/22 , B01D63/10 , B01D2313/086 , B01D2313/14 , B01D2313/143 , Y02C10/10
摘要: A spiral-wound, gas-separation membrane module and a gas-separation process. The module and process provide at least partial counter-current flow between the feed and permeate gas streams without requiring a permeate sweep. The counter-current flow pattern can be achieved by appropriate placement of barriers or baffles in the feed channel. Similar modules and processes may also be used for pervaporation.
摘要翻译: 螺旋缠绕,气体分离膜组件和气体分离过程。 模块和工艺在进料和渗透气体流之间提供至少部分逆流,而不需要渗透物扫描。 逆流流动模式可以通过在进料通道中适当地放置障碍物或挡板来实现。 类似的模块和工艺也可用于渗透蒸发。
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公开(公告)号:US5593684A
公开(公告)日:1997-01-14
申请号:US221914
申请日:1994-03-31
IPC分类号: A61K9/00 , A61K9/70 , A61K31/465 , A61F13/00 , A61K31/44
CPC分类号: A61K9/7061 , A61K31/465 , A61K9/0043 , A61K9/0056 , A61K9/006 , A61K9/7084 , Y10S514/813
摘要: A method for treating conditions responsive to nicotine therapy, and particularly for smoking cessation therapy and for reducing nicotine craving, is described that utilizes transdermal nicotine delivery for obtaining base-line nicotine plasma levels coupled with transmucosal administration of nicotine to satisfy transient craving.
摘要翻译: 描述了用于治疗对尼古丁治疗,特别是戒烟疗法和用于减少尼古丁渴求的病症的治疗方法,其利用透皮尼古丁递送获得碱基尼古丁血浆水平,并与尼古丁的经粘膜施用相结合以满足短暂的渴望。
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公开(公告)号:US5415681A
公开(公告)日:1995-05-16
申请号:US124801
申请日:1993-09-20
申请人: Richard W. Baker
发明人: Richard W. Baker
IPC分类号: B01D3/00 , B01D5/00 , B01D19/00 , B01D53/22 , C02F1/20 , C07B63/00 , C07C17/38 , C07C19/04 , C07C19/041 , C07C21/10 , C07C21/12
CPC分类号: B01D53/229 , B01D19/0005 , B01D5/0057 , B01D5/0081 , B01D5/0087 , B01D53/225 , C02F1/20
摘要: A process for removing inorganic components from water is disclosed. The process involves gas stripping followed by membrane separation treatment of the stripping gas. The stripping step can be carried out using one or multiple gas strippers and using air or any other gas as stripping gas. The membrane separation step can be carried out using a single-stage membrane unit or a multistage unit. Apparatus for carrying out the process is also disclosed. The process is particularly suited for treatment of contaminated groundwater or industrial wastewater.
摘要翻译: 公开了从水中除去无机成分的方法。 该方法包括汽提,然后进行剥离气体的膜分离处理。 汽提步骤可以使用一种或多种气体汽提器和使用空气或任何其它气体作为汽提气体进行。 膜分离步骤可以使用单级膜单元或多级单元进行。 还公开了用于执行该过程的装置。 该过程特别适用于污染地下水或工业废水的处理。
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118.
公开(公告)号:US5401300A
公开(公告)日:1995-03-28
申请号:US143283
申请日:1993-10-25
CPC分类号: B01D53/228 , B01D53/22 , B01D53/268 , B01D2257/304
摘要: Improved membranes and improved membrane processes for treating gas streams containing hydrogen sulfide and methane, plus water vapor, carbon dioxide or both. The processes rely on the availability of two membrane types, one of which has a high hydrogen sulfide/methane selectivity and a high water vapor/methane selectivity, when measured with multicomponent gas mixtures at high pressures. Based on the different permeation properties of the two membrane types, optimized separation processes can be designed. In favorable cases, the processes can simultaneously dehydrate the gas stream and remove the hydrogen sulfide to very low levels.
摘要翻译: 改进的膜和改进的膜方法,用于处理含有硫化氢和甲烷,加上水蒸气,二氧化碳或两者的气流。 这些方法依赖于两种膜类型的可用性,其中之一具有高的硫化氢/甲烷选择性和高水蒸气/甲烷选择性,当在高压下用多组分气体混合物测量时。 基于两种膜类型的不同渗透性能,可以设计优化的分离过程。 在有利的情况下,该方法可以同时使气流脱水并将硫化氢除去至非常低的水平。
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公开(公告)号:US5389126A
公开(公告)日:1995-02-14
申请号:US124935
申请日:1993-09-21
IPC分类号: B01D3/00 , B01D5/00 , B01D19/00 , B01D53/22 , C02F1/20 , C07B63/00 , C07C17/38 , C07C19/04 , C07C19/041 , C07C21/10 , C07C21/12
CPC分类号: B01D53/229 , B01D19/0005 , B01D5/0057 , B01D5/0081 , B01D5/0087 , B01D53/225 , C02F1/20
摘要: A process for removing components from liquid is disclosed. This process involves batchwise gas-stripping followed by membrane separation treatment of the stripping gas. The stripping step can be carried out by circulating the batch repeatedly around the loop formed by the tank and the stripper for sufficient time until the desired degree of component removal is achieved. An additional tank can also be used to avoid mixing treated and untreated liquid streams. The membrane separation step can be carried out using a single-stage membrane unit or a multistage unit. The process is particularly suited for treatment of industrial streams that are small intermittent streams and vary in composition and concentration.
摘要翻译: 公开了一种从液体中除去组分的方法。 该方法包括间歇式汽提,然后进行剥离气体的膜分离处理。 汽提步骤可以通过使由批料槽和汽提塔形成的循环周期反复循环足够的时间直到实现所需的除去成分程度来进行。 还可以使用另外的罐来避免混合经处理和未经处理的液体流。 膜分离步骤可以使用单级膜单元或多级单元进行。 该方法特别适用于处理小间歇流并且组成和浓度变化的工业流。
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公开(公告)号:US5364629A
公开(公告)日:1994-11-15
申请号:US682356
申请日:1991-04-09
申请人: F. Kochinke , Richard W. Baker
发明人: F. Kochinke , Richard W. Baker
CPC分类号: A61K9/7069 , A61K31/40 , A61K47/14 , A61K9/0014 , A61K9/7084 , Y10S514/946 , Y10S514/947
摘要: Transdermal permeation of physostigmine free base and its chemical analogs are increased by the action of fatty acid esters of mono and difunctional alcohols.
摘要翻译: 毒扁豆碱游离碱及其化学类似物的透皮渗透通过单官能和双官能醇的脂肪酸酯的作用而增加。
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