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    Two stage pressure swing adsorption process for producing the less strongly adsorbed component of a feed gas mixture
    1.
    发明授权
    Two stage pressure swing adsorption process for producing the less strongly adsorbed component of a feed gas mixture 失效
    用于产生进料气体混合物较弱吸附组分的两级变压吸附方法

    公开(公告)号：US5382280A

    公开(公告)日：1995-01-17

    申请号：US153387

    申请日：1993-11-16

    申请人： Jung S. Choe ,  Lyndon J. Kellogg, Jr. ,  Robert F. Weimer

    发明人： Jung S. Choe ,  Lyndon J. Kellogg, Jr. ,  Robert F. Weimer

    IPC分类号： B01D53/047 ,  C01B21/04 ,  C01B23/00 ,  B01D53/04

    CPC分类号： C01B21/045 ,  B01D53/047 ,  C01B23/00 ,  B01D2253/102 ,  B01D2256/10 ,  B01D2259/41

    摘要： A two stage pressure swing adsorption process is set forth for producing the less strongly adsorbed component of a feed gas mixture wherein the first stage utilizes a first adsorbent for bulk removal of the more strongly adsorbed component and wherein the second stage utilizes a second adsorbent for trace removal of the more strongly adsorbed component. A further feature of the present invention is that the desorbed gas from the second stage's depressurization step (consisting primarily of the desired less strongly adsorbed component) is recycled to the first stage in order to improve its performance. In a preferred embodiment of the present invention, high purity nitrogen (less than 1000 ppm oxygen, preferably less than 100 ppm oxygen) is produced from an air feed using a kinetically controlled carbon molecular sieve adsorbent in the first stage and an equilibrium controlled metal complex-based adsorbent in the second stage.

    摘要翻译： 介绍了两阶段变压吸附方法，用于生产进料气体混合物的较弱吸附组分，其中第一阶段利用第一吸附剂来大量去除较强吸附组分，其中第二阶段利用第二吸附剂进行痕量 去除较强吸附组分。 本发明的另一个特征是，来自第二阶段的减压步骤（主要由所需的较不强吸附组分组成的）的解吸气体被再循环到第一阶段以便改进其性能。 在本发明的优选实施方案中，使用第一阶段中的动力学控制的碳分子筛吸附剂和平衡控制的金属络合物从空气进料产生高纯度氮（小于1000ppm氧，优选小于100ppm氧） 的吸附剂在第二阶段。

    Process for the production of argon
    2.
    发明授权
    Process for the production of argon 失效
    氩气生产工艺

    公开(公告)号：US4817392A

    公开(公告)日：1989-04-04

    申请号：US79187

    申请日：1987-07-29

    申请人： Rakesh Agrawal ,  Steven R. Auvil ,  Jung S. Choe

    发明人： Rakesh Agrawal ,  Steven R. Auvil ,  Jung S. Choe

    IPC分类号： B01D53/22 ,  C01B23/00 ,  F25J3/04 ,  F25J3/00

    CPC分类号： B01D53/229 ,  C01B23/00 ,  F25J3/04648 ,  F25J2205/02 ,  F25J2205/40 ,  F25J2205/60 ,  F25J2205/80 ,  F25J2205/82 ,  F25J2245/50

    摘要： The present invention is a process for the production and recovery of an O.sub.2 -lean argon stream from a gas mixture containing argon and oxygen. The argon-containing gas mixture is initially treated in a cryogenic separation unit to produce a crude argon stream having an argon concentration between 80-98%. The crude argon stream is passed to a membrane separation unit where it is separated to produce an O.sub.2 -lean argon stream and an O.sub.2 - rich stream. The O.sub.2 -rich stream is recycled tothe cryogenic separation unit and the O.sub.2 -lean argon stream is recovered as product or futher purified.

    摘要翻译： 本发明是一种从含有氩气和氧气的气体混合物生产和回收贫氧氩气流的方法。 首先在低温分离单元中处理含氩气体混合物以产生氩浓度在80-98％之间的粗氩气流。 将粗氩气流输送到膜分离单元，在其中分离，以产生贫氧的氩气流和富O2的气流。 将富O2的物流再循环到低温分离装置中，并将贫O2的氩气流作为产物回收或进一步纯化。

    Use of membrane separation to dry gas streams containing water vapor
    4.
    发明授权
    Use of membrane separation to dry gas streams containing water vapor 失效
    使用膜分离干燥含有水蒸气的气流

    公开(公告)号：US5259869A

    公开(公告)日：1993-11-09

    申请号：US880177

    申请日：1992-05-06

    申请人： Steven R. Auvil ,  Jung S. Choe ,  Lyndon J. Kellogg, Jr.

    发明人： Steven R. Auvil ,  Jung S. Choe ,  Lyndon J. Kellogg, Jr.

    IPC分类号： B01D53/22 ,  B01D53/26 ,  B01D71/68

    CPC分类号： B01D53/22 ,  B01D53/268

    摘要： Valuable process gas is dried to a low water content, for example a dew point of less than -20.degree. F., using membrane separation in which compression of the permeate gases and condensation and separation of liquid water from the permeate stream is combined with a total recycle of uncondensable permeate gases so that no process gas is lost as a result of the drying operation. Feed gas is combined with the recycled gas either prior to compressing, cooling and separating the liquid water from the process gas or subsequent to these steps, depending upon the pressure of the available feed stream to be dried. Membrane separation efficiency is improved by sweeping the downstream surfaces of the membrane with dried product gas. All of the sweep gas is recaptured with the permeate gases and returned to the separation unit, thereby enabling 100%, recovery of the fresh feed gas from the drying operation. Only liquid water and dissolved gases are purged from the system.

    摘要翻译： 使用膜分离将有价值的工艺气体干燥至低水含量，例如露点低于-20°F，其中渗透气体的压缩和液体水从渗透物流的冷凝和分离与 不可渗透的渗透气体的总再循环，使得由于干燥操作而没有工艺气体损失。 在将压缩，冷却和从处理气体中分离出液态水之前或者在这些步骤之后，进料气体与循环气体组合，这取决于待干燥的可用进料流的压力。 通过用干燥的产品气体清洗膜的下游表面来提高膜分离效率。 所有的吹扫气体都与渗透气体一起回收并返回到分离单元，从而能够从干燥操作中回收100％的新鲜进料气体。 只有液体水和溶解的气体从系统中清除。