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公开(公告)号：US4867773A
公开(公告)日：1989-09-19
申请号：US254527
申请日：1988-10-06
IPC分类号： F25J3/04
CPC分类号： F25J3/04284 , F25J3/04333 , F25J3/044
摘要： A process is set forth for recovery of nitrogen from a feed gas stream, containing nitrogen and oxygen, using a cryogenic separation wherein a recycle stream having an oxygen content above that of the feed gas stream is recycled separately and independent of the feed gas stream to the cryogenic separation zone without any intervening process step that would decrease the oxygen content of the recycle stream.
摘要翻译： 阐述了使用低温分离从含有氮和氧的进料气流中回收氮的方法，其中氧气含量高于进料气流的再循环料流分开回收，独立于进料气流， 低温分离区，没有任何中间处理步骤，这将降低循环流的氧含量。
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公开(公告)号：US4732596A
公开(公告)日：1988-03-22
申请号：US43564
申请日：1987-04-28
CPC分类号： F25J3/0261 , B01D53/047 , C01B3/506 , C01B3/56 , C01B31/18 , F25J3/0223 , F25J3/0252 , B01D2256/16 , B01D2256/20 , B01D2257/504 , B01D2257/80 , B01D2259/40001 , B01D2259/40041 , B01D2259/40056 , B01D2259/40075 , B01D2259/4062 , B01D2259/416 , B01D53/261 , C01B2203/046 , C01B2203/047 , C01B2203/0475 , C01B2203/048 , C01B2203/0485 , C01B2203/0495 , F25J2200/70 , F25J2205/04 , F25J2205/40 , F25J2205/60 , F25J2205/66 , F25J2210/04 , F25J2245/02 , F25J2270/04 , Y02C10/08 , Y02P20/152 , Y10S62/908 , Y10S62/92 , Y10S62/932
摘要： Hydrogen and carbon monoxide are each separately recovered in high yield from a multicomponent gas stream containing these compounds together with carbon dioxide and a zero to minor amount of one or more gaseous components from the group consisting of nitrogen, methane, water vapor and C.sub.2 -C.sub.6 hydrocarbons, by a process wherein the multicomponent gas stream, such as that obtained by steam methane reforming, is initially treated in a pressure swing adsorption unit to remove water and CO.sub.2, and the obtained effluent freed of CO.sub.2 and water is then further subjected to (1) cryogenic fractionation to condense CO and to (2) hydrogen purification by selective adsorption (in either order) to recover high purity carbon monoxide and essentially pure hydrogen. The CO.sub.2 -laden adsorbent is regenerated by purging with a H.sub.2 O and CO.sub.2 -free waste gas stream from the hydrogen purification adsorbent bed or from the cryogenic fractionation or from both of these.
摘要翻译： 氢和一氧化碳分别从含有这些化合物的多组分气流与二氧化碳和零至少量的一种或多种气态组分从氮气，甲烷，水蒸气和C1-C6 碳氢化合物，其中通过蒸汽甲烷重整获得的多组分气流最初在变压吸附单元中处理以除去水和CO 2，然后将得到的排出CO 2和水的流出物进一步经受（ 1）低温分馏以冷凝CO和（2）通过选择性吸附（以任一顺序）氢纯化以回收高纯度一氧化碳和基本上纯的氢。 通过用来自氢气净化吸附床或来自低温分馏或来自这两者的H 2 O和不含CO 2的废气流进行净化来再生含二氧化碳的吸附剂。
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3.发明授权
公开(公告)号：US5355682A
公开(公告)日：1994-10-18
申请号：US123026
申请日：1993-09-15
CPC分类号： F25J3/04218 , F25J3/04084 , F25J3/0409 , F25J3/04296 , F25J3/04412 , F25J3/0443
摘要： The process of the present invention is a cryogenic air separation process with three important features: (1) at least a portion of a nitrogen-rich liquid from the column system is boosted in pressure before being vaporized and delivered as a product; (2) at least a portion of the feed air is at least partially condensed in indirect heat exchange with the boosted pressure, nitrogen-rich stream; and (3) a portion of the liquid nitrogen condensed from the vapor nitrogen from the top of the higher pressure column is returned to the higher pressure column as reflux with the remaining portion being removed from the column system.
摘要翻译： 本发明的方法是具有三个重要特征的低温空气分离方法：（1）至少一部分来自塔系统的富氮液体在被蒸发并作为产物输送之前被加压; （2）至少一部分进料空气与增压的富氮流间接热交换至少部分冷凝; 和（3）从高压塔顶蒸气氮冷凝的一部分液氮返回到高压塔作为回流，其余部分从柱系统中除去。
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公开(公告)号：US4983194A
公开(公告)日：1991-01-08
申请号：US475070
申请日：1990-02-02
CPC分类号： C01B23/00 , F25J3/04303 , F25J3/04412 , F25J3/04678 , F25J3/04739 , F25J3/04915 , F25J2205/60 , F25J2245/58 , F25J2250/40 , F25J2250/42 , F25J2250/52 , F25J2250/58 , Y02P20/129 , Y10S62/924 , Y10S62/939
摘要： A process for making high purity argon is disclosed in which crude argon containing less than about 0.8 mol % oxygen is recovered from air in a cryogenic distillation system, the crude argon is purified by removing oxygen in a getter system, and other impurities are removed by cryogenic distillation to yield a high purity argon product. The crude argon purification system is heat integrated with the main cryogenic air separation system. High purity argon can be produced at argon recoveries greater than 90% by utilizing structured packing in at least a portion of the argon sidearm column.
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公开(公告)号：US4654047A
公开(公告)日：1987-03-31
申请号：US769204
申请日：1985-08-23
CPC分类号： F25J3/0219 , B01D53/229 , C01B3/501 , C01B3/506 , F25J3/0233 , F25J3/0252 , F25J3/08 , C01B2203/046 , C01B2203/047 , C01B2203/048 , C01B2203/0495 , F25J2205/40 , F25J2205/80 , F25J2205/82 , F25J2210/12 , F25J2215/10 , F25J2245/02 , Y10S62/931
摘要： The present invention involves a process for recovering hydrogen from a feed gas mixture comprising hydrogen and at least one other component. The feed gas mixture is initially separated in a membrane separation unit to produce a hydrogen-rich stream and a hydrogen-lean stream. The hydrogen-lean stream is subsequently treated in a cryogenic separation unit to remove a portion of the non-hydrogen components and produce a hydrogen-enriched stream. The hydrogen-enriched stream from the cryogenic separation unit is recycled and combined with the feed gas mixture to the membrane separation unit.
摘要翻译： 本发明涉及从包含氢和至少一种其它组分的原料气混合物中回收氢气的方法。 原料气体混合物最初在膜分离单元中分离以产生富氢流和贫氢流。 随后在低温分离单元中处理贫氢气流以除去一部分非氢组分并产生富氢流。 来自低温分离单元的富氢流被再循环并与进料气体混合物组合到膜分离单元。
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公开(公告)号：US5768914A
公开(公告)日：1998-06-23
申请号：US901538
申请日：1997-07-28
申请人： Jianguo Xu , Jeffrey A. Hopkins
发明人： Jianguo Xu , Jeffrey A. Hopkins
IPC分类号： F25J3/04
CPC分类号： F25J3/04412 , F25J3/04678 , F25J3/0469 , F25J2215/56 , Y10S62/924
摘要： A process is set forth for the cryogenic distillation of an air feed to produce oxygen and argon and is particularly applicable where high purity oxygen and ultra-high purity argon are required and where only moderate argon recovery is required. A key to the present invention is that the argon column is divided into a lower section and an upper section and the impure argon overhead from the lower section is split into three portions. The first portion is further distilled to the desired purity in the top section, the second portion is condensed and returned as reflux to the lower section, and the third portion is removed as an impure argon stream. Such a scheme allows one to reduce the diameter of the argon column's top section, thereby providing a capital cost savings.
摘要翻译： 阐述了用于空气进料的低温蒸馏以产生氧气和氩气的方法，并且特别适用于需要高纯度氧气和超高纯度氩气并且仅需要中等氩气回收的方法。 本发明的关键之处在于，氩塔被分为下部和上部，从下部将不纯的塔顶馏分分成三部分。 第一部分在顶部进一步蒸馏至所需的纯度，第二部分被冷凝并作为回流返回到下部，并且第三部分作为不纯的氩气流除去。 这种方案允许减少氩塔顶部的直径，从而提供资本成本节省。
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7.发明授权Method and apparatus for controlling show cycles in a data processing system 失效用于控制数据处理系统中的显示周期的方法和装置
公开(公告)号：US5675749A
公开(公告)日：1997-10-07
申请号：US460484
申请日：1995-06-02
CPC分类号： G06F11/3648 , G06F11/349
摘要： The present invention relates in general to a data processing system (10), and more particularly to a method and apparatus for controlling showcycles in a data processing system (10) to provide user control over the tradeoff between internal bus visibility and operating performance. In one embodiment, the functionality of one or more register control bits (100, 102) can be combined with the functionality of one or more externally provided signals (78) to allow the user to have a wide range of control over the show cycles provided on external bus 12. The user is thus able to continuously select and change which information is provided by way of show cycles on external bus 12. As a result, the difficulty of debugging software program code can potentially be reduced.
摘要翻译： 本发明一般涉及一种数据处理系统（10），更具体地涉及一种用于控制数据处理系统（10）中的显示的方法和装置，以提供用户对内部总线可见性和操作性能之间权衡的控制。 在一个实施例中，一个或多个寄存器控制位（100,102）的功能可以与一个或多个外部提供的信号（78）的功能组合，以允许用户对所提供的显示循环进行宽范围的控制 因此，用户能够连续地选择和改变通过外部总线12上的显示周期来提供哪些信息。结果，可以有可能降低调试软件程序代码的难度。
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公开(公告)号：US4861351A
公开(公告)日：1989-08-29
申请号：US97573
申请日：1987-09-16
CPC分类号： B01D53/0476 , B01D53/1475 , C01B3/382 , C01B3/52 , C01B3/56 , C01B31/18 , B01D2253/108 , B01D2256/16 , B01D2256/20 , B01D2257/502 , B01D2259/4003 , B01D2259/40064 , B01D2259/4061 , C01B2203/0415 , C01B2203/047 , C01B2203/0475 , C01B2203/0495 , C01B2203/0827 , C01B2203/142 , C01B2203/143 , C01B2203/147 , C01B2203/148 , C01B2203/82 , Y02C10/06 , Y02C10/08 , Y02P20/152
摘要： Substantially pure hydrogen and high purity carbon monoxide are produced and recovered from a methane-rich gas composition, such as natural gas, by subjecting such composition to steam reforming in a first stage at relatively mild conditions, followed by secondary oxidative reforming of the thus obtained primary reformate effecting conversion of residual methane therein to carbon oxides. The secondary reformate, comprised chiefly of hydrogen, CO, and CO.sub.2, is subjected to a novel sequence of operations for separation of these individual components. CO.sub.2 is first removed by solvent absorption, followed by selective adsorption for separation of CO from the CO.sub.2 -freed gas mixture with attendant recovery of hydrogen product of 98.sup.+ % purity as an unsorbed effluent. Trace to small amounts of undesired carbon monoxide in the thus recovered hydrogen product can be converted by catalytic methanation.
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公开(公告)号：US4857082A
公开(公告)日：1989-08-15
申请号：US244769
申请日：1988-09-15
CPC分类号： C01B23/00 , B01D53/22 , C01B3/501 , C01C1/0482 , C01B2203/0405 , C01B2203/0465 , C01B2203/047 , C01B2203/0475 , C01B2203/048 , Y02P20/52
摘要： A permeator system for separating at least one gaseous component from a feed gas mixture containing at least one other component using a semi-permeable membrane is disclosed which maintains high permeate product purity and desired component recovery during periods of turn-down in capacity. In accordance with the present invention, the permeator system contains a series of flow and pressure sensors and valves which regulate differential pressure across the membrane based upon permeate product demand or feed availability.
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10.发明授权
公开(公告)号：US4749393A
公开(公告)日：1988-06-07
申请号：US99354
申请日：1987-09-18
IPC分类号： C01B3/52 , B01D5/00 , C01B3/50 , C07B31/00 , C07B63/00 , C07C67/00 , C10G31/06 , C10G53/02 , F25J3/02
CPC分类号： F25J3/0238 , F25J3/0219 , F25J3/0233 , F25J3/0252 , F25J2200/80 , F25J2205/40 , F25J2205/60 , F25J2205/80 , F25J2210/04 , F25J2210/12 , F25J2245/02 , F25J2270/02 , F25J2270/04 , Y10S62/932
摘要： The process of this invention is a hybrid gas separation process which recovers both heavy hydrocarbon and high purity hydrogen products from a gas stream containing a relatively low concentration of hydrogen. The heavy hydrocarbon product may consist of C.sub.2 +, C.sub.3 + and/or C.sub.4 + hydrocarbons. The light hydrocarbons and other light components, such as N.sub.2 and CO, are removed as a light fuel gas stream. After convertional removal of any components which might freeze at low temperatures, the feed gas is combined with recycle gas from the hydrogen purifier and fed to the cryogenic unit.
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