PROCESS FOR SEPARATING HIGHER HYDROCARBONS FROM NATURAL OR PRODUCED GAS STREAMS
    39.
    发明授权
    PROCESS FOR SEPARATING HIGHER HYDROCARBONS FROM NATURAL OR PRODUCED GAS STREAMS 失效
    分离从气体中自然和人工STREAMS的高级烃。

    公开(公告)号:EP0348501B1

    公开(公告)日:1994-01-26

    申请号:EP89903324.5

    申请日:1988-12-27

    发明人: WATLER, Kenneth

    IPC分类号: B01D53/22

    CPC分类号: C10G5/00 B01D53/22 B01D71/24

    摘要: A process for separating ethane and other higher hydrocarbons from a natural or produced gas stream, having methane as its major constituent. A rubbery permselective membrane, having a propane/methane selectively of (8) or above, in a membrane unit (E) is contacted on its feed side with a gas mixture (4) typically containing methane, ethane, propane, butane, and small amounts of other hydrocarbons, water vapor, hydrogen sulfide and carbon dioxide. Carbon dioxide, water vapor, ethane and the other higher hydrocarbons permeate preferantially through the membrane and are withdrawn in permeate stream (6), and the retentate stream (5) is correspondingly enriched in methane.

    Process for recovering organic vapors from air
    40.
    发明公开
    Process for recovering organic vapors from air 失效
    从空气中回收有机蒸气的方法

    公开(公告)号:EP0511687A3

    公开(公告)日:1993-11-03

    申请号:EP92109345.6

    申请日:1985-05-24

    发明人: Baker, Richard W.

    IPC分类号: B01D53/22

    CPC分类号: B01D71/24 B01D53/22

    摘要: Organic vapor is recovered and concentrated from a feed stream of air having an organic vapor content of no more than 20 000 ppm by volume by pressing the stream across a thin semipermeable membrane having a selectivity for organic vapor over air of at least 50, as measured by the ratio of organic vapor permeability to nitrogen permeability, and a permeability to organic vapor of at least 3 x 10 ⁻⁷ cm ³ (STP) cm/cm ² .sec cm Hg. A partial vacuum is created on the permeate side of the membrane so that organic vapor passes preferentially through the membrane to form an organic vapor depleted air stream on the feed side and an organic vapor enriched stream on the permeate side. The organic vapor which has passed through the membrane is compressed and condensed to recover the vapor as a liquid.

    摘要翻译: 从有机蒸气含量不超过20000体积ppm的空气进料流中回收有机蒸气并浓缩,通过将该流压过具有至少50的空气有机蒸气选择性的薄半透膜,如所测量的 通过有机蒸汽渗透率与氮渗透率的比率和至少3×10 -6 cm 3(STP)cm / cm 2 .sec·cm Hg的有机蒸汽渗透率。 在膜的渗透侧产生部分真空,使得有机蒸汽优先通过膜,在进料侧形成有机蒸气贫化的空气流,在渗透侧形成富有机蒸气的流。 通过膜的有机蒸气被压缩并冷凝以回收作为液体的蒸气。