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

Patent metadata

Field	Value
Publication number	US-9452384-B2
Application number	US-201615007985-A
Country	US
Kind code	B2
Filing date	Jan 27, 2016
Priority date	Jul 30, 2013
Publication date	Sep 27, 2016
Grant date	Sep 27, 2016

Abstract

An acidic gas separation laminate includes a composite film formed of a porous support which is formed by laminating a porous film and an auxiliary support film and an acidic gas separation facilitated transport film which is disposed on the porous film side of the porous support; 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 permeated and passed through the acidic gas separation facilitated transport film flows; and a film protection unit in which an adhesive becomes impregnated into the porous film at an impregnation rate of 10% or greater in the lamination direction of the porous support and the impregnation rate of the adhesive in the auxiliary support film is smaller than the impregnation rate of the adhesive in the porous film.

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 permeated and passed through the composite film flows; and
a film protection unit in which an adhesive becomes impregnated into the porous film at an impregnation rate of 10% or greater in a lamination direction of the porous support and an auxilliary impregnation rate of the adhesive in the auxiliary support film is smaller than the impregnation rate of the adhesive in the porous film.

2. The acidic gas separation laminate according to claim 1 , further comprising:
a sealing unit which is formed by impregnating the porous film with the adhesive along the peripheral edge of the laminate at a porous film sealing unit impregnation rate of 60% or greater and
formed by impregnating the auxiliary support film and the permeating gas channel member with the adhesive such that their respective impregnation rates become greater than or equal to the porous film sealing unit impregnation rate,
wherein the film protection unit is formed in a state of being adjacent to the sealing unit.

3. The acidic gas separation laminate according to claim 1 , further comprising:
a supply gas channel member which is disposed between the acidic gas separation facilitated transport film of the composite film that is obtained by inwardly folding the acidic gas separation facilitated transport film into two in the length direction,
wherein a portion of the film protection unit overlaps a portion of the acidic gas separation facilitated transport film which contacts an end portion of the supply gas channel member.

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

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

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

7. 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.

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

9. An acidic gas separation module comprising:
a permeating gas collecting pipe; and
the acidic gas separation laminate according to claim 1 .

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

11. The acidic gas separation module according to claim 9 , which is a flat film type module.

Assignees

• Fujifilm Corp

Inventors

• Narita Takeshi
• Ishizuka Kenichi
• Ouchi Ryo
• Sawada Makoto

Classifications

• B01D2323/21

  Fillers · CPC title

• B01D53/228 Primary

  characterised by specific membranes · CPC title

• B01D2323/283

  Reducing the pores · CPC title

• B01D69/12

  Composite membranes; Ultra-thin membranes · CPC title

• B01D2323/286

  Closing of pores, e.g. for membrane sealing · CPC title