Patent ID: 8257590
Filing Date: 2012-09-04
Classification: B01D,C02F

Abstract:
1. A hollow fiber membrane module, comprising: a cylindrical module case; a bundle of a large number of hollow fiber membranes housed in the module case; adhesive fixing portions fixing respective opposite ends of the bundle in the module case so as to allow a raw fluid to pass through the hollow fiber membranes; a permeated fluid communication portion connecting opposite outer end surfaces of the adhesive fixing portions together via a pipe with a larger equivalent diameter than each of the hollow fiber membranes; and a raw-fluid distributive supply portion located at one of the adhesive fixing portions to enable the raw fluid to be fed into the module case, wherein the raw-fluid distributive supply portion comprises a supply source pipe extending from a center of the outer end surface of the one of the adhesive fixing portions in a length direction of the module case and a plurality of raw-fluid supply branching portions in fluid communication with an outlet of the supply source pipe and branching from the supply source pipe so as to evenly distribute the supplied raw fluid in a direction of a cross section of the hollow fiber membrane module, the plurality of raw-fluid supply branching portions having a plurality of raw-fluid introduction holes provided in a gap between the hollow fiber membranes so as to enable the raw fluid to be fed along a longitudinal direction of the hollow fiber membranes, wherein at least a portion of both the supply source pipe and the plurality of raw-fluid supply branching portions of the raw-fluid distributive supply portion are positioned within the one of the adhesive fixing portions, wherein the plurality of raw-fluid supply branching portions following the supply source pipe are provided therein, each having an acute forward angle extending from the supply source pipe along the length direction.