Acidic gas separation laminate and acidic gas separation module provided with laminate

Patent metadata

Field	Value
Publication number	US-9457319-B2
Application number	US-201615006918-A
Country	US
Kind code	B2
Filing date	Jan 26, 2016
Priority date	Jul 30, 2013
Publication date	Oct 4, 2016
Grant date	Oct 4, 2016

Abstract

An acidic gas separation laminate including: a porous support formed by laminating a porous film and an auxiliary support film; an acidic gas separation facilitated transport film; a permeating gas channel member; a sealing unit which is formed by impregnating the porous film, the auxiliary support film, and the gas channel member with an adhesive in the lamination direction thereof along the peripheral edge at a width of 5 mm or greater such that the permeation rate becomes 60% or greater; and a stress buffer unit which is adjacent to the sealing unit, has a permeation rate of the adhesive of less than 60% at least in the porous film, and is formed by impregnating at least the gas channel member with the adhesive.

First claim

What is claimed is:

1. An acidic gas separation laminate comprising:
a composite film formed of a porous support which is formed by laminating a porous film and an auxiliary support film, a carrier which is disposed on the porous film side of the porous support and reacts with acidic gas in raw material gas, and an acidic gas separation facilitated transport film which contains a hydrophilic compound carrying the carrier;
a permeating gas channel member which is laminated so as to face the auxiliary support film of the porous support and in which acidic gas has permeated through the composite film flows;
a sealing unit which is formed by impregnating the porous film with an adhesive along the peripheral edge of the acidic gas separation laminate at a width of 5 mm or greater such that the impregnation rate becomes 60% or greater and impregnating the auxiliary support film and the permeating gas channel member with the adhesive such that the impregnation rate becomes 60% or greater respectively; and
a stress buffer unit which is adjacent to the sealing unit, is formed by impregnating at least the permeating gas channel member with the adhesive and the porous film with adhesive such that the impregnation rate of the adhesive is less than 60% at least in the porous film.

2. The acidic gas separation laminate according to claim 1 , wherein the width of the stress buffer unit is in a range of 0.1% to 50% of the width of the sealing unit.

3. The acidic gas separation laminate according to claim 1 , wherein the porous film is formed of a fluorine-based resin material.

4. The acidic gas separation laminate according to claim 3 , wherein the porous film is formed of polytetrafluoroethylene.

5. The acidic gas separation laminate according to claim 1 , wherein the adhesive is formed of an epoxy resin.

6. The acidic gas separation laminate according to claim 1 , further comprising an intermediate layer between the porous film and the acidic gas separation facilitated transport film.

7. The acidic gas separation laminate according to claim 6 , wherein the intermediate layer is a silicone resin layer.

8. An acidic gas separation module comprising:
a permeating gas collecting pipe; and
the acidic gas separation laminate according to claim 1 ,
wherein the permeating gas channel member other than where the sealing unit of the acidic gas separation laminate is formed at the end portion is connected to the permeating gas collecting pipe.

9. The acidic gas separation module according to claim 8 , which is a spiral type module.

10. The acidic gas separation module according to claim 8 , which is a flat film type module.

Assignees

• Fujifilm Corp

Inventors

• Narita Takeshi
• Ishizuka Kenichi

Classifications

• B01D53/228

  characterised by specific membranes · CPC title

• B01D63/10

  Spiral-wound membrane modules · CPC title

• B01D2053/221

  Devices · CPC title

• B01D63/087 Primary

  Single membrane modules · CPC title

• B01D71/381

  Polyvinylalcohol · CPC title