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    Gas separation process
    39.
    发明公开
    Gas separation process 失效
    气体分离过程

    公开(公告)号：EP0241313A2

    公开(公告)日：1987-10-14

    申请号：EP87303181.9

    申请日：1987-04-10

    申请人： UOP

    发明人： Doshi, Kishore Jasraj

    IPC分类号： B01D53/04 ,  B01D53/22 ,  C01B3/50 ,  C01B3/56

    CPC分类号： B01D53/047 ,  B01D53/229 ,  B01D2253/108 ,  B01D2256/16 ,  B01D2257/7025 ,  B01D2259/40001 ,  B01D2259/4003 ,  B01D2259/40052 ,  B01D2259/4006 ,  B01D2259/40062 ,  Y02C20/20

    摘要： A process for the enhanced separation of gases comprising:

    (a) contacting a feed gas stream (1) at an elevated pressure with a permeable membrane (4) capable of selectively permeating a first component thereof, thereby obtaining a first component enriched, second component depleted permeate portion (6) of said feed stream (1) at a reduced pressure, and a second component enriched, first component depleted non-permeate portion (5) of said feed stream (1) substantially at said elevated pressure;
    (b) withdrawing said non-permeate gas (5) from the permeable membrane (4);
    (c) passing said permeate gas (6) to the feed end of an adsorbent bed in a pressure swing adsorption system (9) capable of selectively adsorbing additional amounts of said second component therefrom at an upper adsorption pressure, with unadsorbed, purified first component gas being withdrawn as a high purity gas (10) from the product end of the bed;
    (d) countercurrently depressurizing the bed to a lower desorption pressure and/or purging said bed (9) to desorb and release a first and second component-­containing regeneration stream (11) from the feed end of the bed (9); and
    (e) recycling said at least a portion of regeneration stream for combination with additional quantities of the feed gas stream, whereby the separation of the first component is achieved at a high purity and desirable recovery levels, with said second component being available at a desirably high pressure level.

    摘要翻译： 一种用于增强气体分离的方法，包括：（a）在升高的压力下使进料气流（1）与能够选择性渗透其第一组分的渗透膜（4）接触，从而获得第一组分富集的第二组分 （1）的贫化渗透物部分（6）以及基本在所述升高的压力下的所述进料流（1）的富含第二组分的富含第一组分的非渗透物部分（5）; （b）从渗透膜（4）中取出所述不渗透气体（5）; （c）将所述渗透气体（6）通过变压吸附系统（9）中的吸附剂床的进料端，所述变压吸附系统能够在较高的吸附压力下选择性地吸附附加量的所述第二组分，其中未吸附的纯化的第一组分 气体作为高纯度气体（10）从床的产品端取出; （d）使所述床逆流减压至较低的解吸压力和/或清除所述床（9）以从所述床（9）的所述进料端解吸并释放含第一和第二组分的再生料流（11）; 和（e）将所述至少一部分再生流再循环用于与额外量的进料气流组合，由此以高纯度和期望的回收水平实现第一组分的分离，其中所述第二组分在 理想的高压水平。