| 摘要 |
The performance of axially-fed permeators comprising an essentially fluid impermeable tubular shell containing a plurality of selectively permeable hollow fibers suitable for the selective permeation of at least one fluid in a fluid mixture containing at least one other component, wherein the hollow fibers are positioned in a tubular shell and are assembled in the form of an elongated bundle, is enhanced by providing at least one flow diverter in the bundle. The flow diverter comprises a region of a plurality of hollow fibers embedded in a solid wherein the cross-sectional area of the flow diverter which is transverse to the orientation of the hollow fibers is a minor portion of the transverse cross-section sectional area of the bundle sufficient to divert fluid flow within the bundle. Advantageously, the portion of the plurality of hollow fibers encompassed in the flow diverter is insufficient to significantly adversely affect the total available membrane surface area for the selective permeation. In one embodiment, the bundle of hollow fibers substantially completely fills the cross-section of the tubular shell, and the at least one region extends around the transverse cross-section of the bundle encompassing hollow fibers at the periphery of the bundle. Desirably this surrounding flow diverter does not significantly increase the packing factor of the hollow fibers in the zone of the bundle surrounded by the flow diverter, and the flow diverter is adapted to be in an essentially fluid tight relationship with the shell.
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