Gas separation membrane module and method for gas separation

Patent metadata

Field	Value
Publication number	US-10765992-B2
Application number	US-201916298524-A
Country	US
Kind code	B2
Filing date	Mar 11, 2019
Priority date	Nov 4, 2010
Publication date	Sep 8, 2020
Grant date	Sep 8, 2020

Abstract

A process for producing nitrogen-rich air by feeding high temperature air at 150° C. or more to an air separation membrane module is described. After being placed at 175° C. for two hours, the air separation module exhibits a shape-retention ratio of 95% or more in one embodiment. The nitrogen-rich air can be fed to a fuel tank for an aircraft, for example.

First claim

What is claimed is:

1. A gas separation membrane module, comprising;
a cartridge housing a hollow fiber bundle including a number of hollow fiber membranes in a cylindrical vessel, each hollow fiber membrane extends in parallel the length of the cylindrical vessel,
capping members each of which is configured to be attached to both end of said cartridge,
sealing members for sealing between each of said capping members and said cartridge respectively, and
a fixture for fixing said capping members to each other, said fixture being disposed outside of the cartridge,
wherein said cartridge is replaceably mounted between said capping members, and
wherein a pair of tube sheets secure each end of the hollow fiber bundle within the cylindrical vessel.

2. The gas separation membrane module according to claim 1 , wherein said fixture has at least one fixing rod coupling said capping members, and each capping member has a through-hole into which said fixing rod is inserted.

3. The gas separation membrane module according to claim 1 , wherein said capping members are mounted such that said capping members cover the end of said cylindrical vessel and each of said sealing members is an elastic ring member configured to be disposed between the periphery of said cartridge and the inner circumference of said capping member.

4. The gas separation membrane module according to claim 3 , wherein said elastic ring member is to be held in the inner circumference of one of said capping members and is configured to remain in the side of said capping member when said cartridge is removed from said capping member for replacement.

5. The gas separation membrane module according to claim 1 , wherein
said tube sheets are for separating the inside of said cylindrical vessel from the outside,
an inner groove is formed in a region within said cylindrical vessel and facing said tube sheets, and
a part of said tube sheets engage with said inner groove.

Assignees

• Ube Industries

Inventors

• Kanetsuki Yutaka
• Fukuda Nobuhiko
• Tanihara Nozomu
• Nakamura Tomohide

Classifications

• B01D53/228 Primary

  characterised by specific membranes · CPC title

• B01D2313/2011

  Pressure vessels · CPC title

• B01D71/641

  Polyamide-imides · CPC title

• B01D71/643

  Polyether-imides · CPC title

• B01D2313/041

  Gaskets or O-rings · CPC title