Separation of organic mixtures using gas separation or pervaporation and dephlegmation
    26.
    发明授权
    Separation of organic mixtures using gas separation or pervaporation and dephlegmation 有权
    使用气体分离或渗透蒸发和分馏分离有机混合物

    公开(公告)号:US06899743B2

    公开(公告)日:2005-05-31

    申请号:US10459639

    申请日:2003-06-11

    IPC分类号: B01D53/22

    摘要: A process for treating mixtures of organic components, including azeotropic mixtures. The process includes a gas- or liquid-phase membrane separation step in conjunction with a dephlegmation step to treat at least a portion of the permeate vapor from the pervaporation step. The process yields a membrane residue stream, a stream enriched in the more volatile component as the overhead stream from the dephlegmator and a condensate stream enriched in the less volatile component as a bottoms stream from the dephlegmator. Any of these may be the principal product of the process.

    摘要翻译: 一种处理有机组分混合物的方法,包括共沸混合物。 该方法包括气相或液相膜分离步骤以及分馏步骤,以从渗透蒸发步骤处理至少一部分渗透物蒸气。 该方法产生膜残留物流,富含较高挥发性组分的物流作为来自分馏塔的塔顶馏出物和富集较不易挥发组分的冷凝物流,作为来自分馏塔的底部物流。 任何这些可能是该过程的主要产物。

    Membrane separation of associated gas
    29.
    发明授权
    Membrane separation of associated gas 失效
    相关气体的膜分离

    公开(公告)号:US5769926A

    公开(公告)日:1998-06-23

    申请号:US789371

    申请日:1997-01-24

    IPC分类号: B01D53/00 B01D53/22

    摘要: An improved, membrane-based method of treating gas evolved during gas/oil separation, to separate the very light hydrocarbon gases, methane in particular, from the heavier hydrocarbons. The membrane acts as a demethanizer and establishes a vapor/liquid equilibrium during phase separation that is different than would otherwise obtain. This can increase oil production and reduce the weight of C.sub.4+ hydrocarbons lost in the associated gas.

    摘要翻译: 一种改进的基于膜的方法,用于处理在气/油分离过程中产生的气体,以将特别轻的烃气体,特别是甲烷与较重的烃分离。 该膜用作脱甲烷塔,并且在相分离期间建立不同于否则获得的蒸气/液体平衡。 这可以增加石油产量,并减少相关天然气中损失的C4 +烃的重量。

    Olefin separation membrane and process
    30.
    发明授权
    Olefin separation membrane and process 失效
    烯烃分离膜和工艺

    公开(公告)号:US5670051A

    公开(公告)日:1997-09-23

    申请号:US652837

    申请日:1996-05-23

    摘要: A membrane and process for separating unsaturated hydrocarbons from fluid mixtures. The membrane and process differ from previously known membranes and processes, in that the feed and permeate streams can both be dry, the membrane need not be water or solvent swollen, and the membrane is characterized by a selectivity for an unsaturated hydrocarbon over a saturated hydrocarbon having the same number of carbon atoms of at least about 20, and a pressure-normalized flux of said unsaturated hydrocarbon of at least about 5.times.10.sup.-6 cm.sup.3 (STP)/cm.sup.2 .multidot.s.multidot.cmHg, said flux and selectivity being measured with a gas mixture containing said unsaturated and saturated hydrocarbons, and in a substantially dry environment.

    摘要翻译: 用于从流体混合物中分离不饱和烃的膜和方法。 膜和方法与先前已知的膜和方法不同,因为进料和渗透物流都可以是干的,膜不需要是水或溶剂溶胀,并且膜的特征在于不饱和烃相对于饱和烃的选择性 具有至少约20的相同数目的碳原子和至少约5×10 -6 cm 3(STP)/ cm 2×s×cmHg的所述不饱和烃的压力归一化通量,所述通量和选择性用含有所述不饱和烃的气体混合物 和饱和烃,并且在基本干燥的环境中。