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    • 5. 发明授权
    • Self sealing membrane contactor with PTFE tubular membranes
    • 自密封膜接触器与PTFE管状膜
    • US09061251B2
    • 2015-06-23
    • US13200611
    • 2011-09-27
    • Kenneth Donald HobbsRobert Edward JermanCharles Edward Wolanski
    • Kenneth Donald HobbsRobert Edward JermanCharles Edward Wolanski
    • B01D24/00B01D27/00B01D33/00B01D25/00B01D36/00B01D63/06B01D71/34B01D71/36
    • B01D63/061B01D71/32B01D71/34B01D71/36B01D2313/04B01D2313/13F16L33/227F16L41/001Y10T29/49826Y10T29/53
    • A tubular membrane module and its method of manufacture are disclosed wherein tubular membranes form an interference self-sealing fit with hard tube sheets with the aid of a hard hollow mandrel inserted at the end of the tubular membranes. The tubular membranes are comprised of porous, compressible PTFE and/or fluorocopolymers. The self-sealing method described herein requires no heat treatment, allows for ease of manufacture without destruction of the tubular membranes and without the processing complexity of utilizing any additional potting agent, extrusion, or chemical cross-linking of any polymeric adhesives. The self sealing PTFE tubular membranes have superb chemical resistance and temperature resistance, and through the benefits of this invention, offer higher pullout resistance than typically observed with potting materials such as polyurethane and epoxy. In addition, the self-sealing method is reversible and non-destructive (whereas chemical potting and sealing methods using heat are not), as one can easily remove one or more damaged tubes and replace them.
    • 公开了一种管状膜组件及其制造方法,其中管状膜借助于插入管状膜端部的硬质中空心轴形成与硬管片的干涉自密封配合。 管状膜由多孔,可压缩的PTFE和/或含氟聚合物组成。 本文所述的自密封方法不需要热处理,允许容易制造而不破坏管状膜,并且不需要利用任何额外的灌封剂,挤出或任何聚合物粘合剂的化学交联的加工复杂性。 自密封PTFE管状膜具有优异的耐化学腐蚀性和耐温性,并且通过本发明的优点,提供比通常用灌封材料如聚氨酯和环氧树脂观察到的更高的拉拔阻力。 另外,自密封方法是可逆的和非破坏性的(而不是使用热的化学灌封和密封方法),因为可以容易地去除一个或多个损坏的管并更换它们。