Patent ID: 8182592
Filing Date: 2012-05-22
Classification: B01D

Abstract:
1. A shell feed type gas separation membrane module where a high-pressure mixed gas is fed to the outer space of hollow fiber membranes capable of separating gases for performing gas separation, comprising a hollow fiber element, a vessel removably housing said hollow fiber element, and a perforated plate disposed within said vessel, wherein said hollow fiber element comprises a hollow fiber bundle formed by binding up a number of said hollow fiber membranes which are folded in U-shape such that both end openings are aligned at one end, a tube sheet to which the opening ends of said hollow fiber membranes are bonded such that the ends of said hollow fiber membranes are open, and a core tube which is disposed substantially in the center of said hollow fiber bundle and bonded to said tube sheet at one end and has an internal non-permeate gas flow path communicating with the outer space of said hollow fiber membranes within said vessel, wherein said vessel comprises a vessel body comprising an opening through which said hollow fiber element is taken in and out, a core tube holding part which holds the other end of said core tube and which guides a gas from a non-permeate gas flow path in said core tube to the outside of said vessel and a mixed gas inlet, and a lid for shutting the opening in said vessel body having a permeate gas outlet, and wherein said perforated plate is placed between said hollow fiber element and said lid such that at least a part of the surface facing the tube sheet side is in contact with said tube sheet and a non-contacting part of the surface facing the tube sheet side has a concave portion with a depth of 1 mm or more as a permeate gas flow path.