Acidic gas separation module, and method for manufacturing acidic gas separation module

Patent metadata

Field	Value
Publication number	US-9440191-B2
Application number	US-201514624584-A
Country	US
Kind code	B2
Filing date	Feb 18, 2015
Priority date	Sep 28, 2012
Publication date	Sep 13, 2016
Grant date	Sep 13, 2016

Abstract

An acidic gas separation module including: a perforated hollow central tube; and a layered body that is wound on the perforated hollow central tube and has, in the following order on a porous support: an acidic gas separation layer containing a water-absorbing polymer, a carrier, and water; and a flow channel material with a network structure having a thread intersection portion and an arithmetical surface roughness for a surface contacting the acidic gas separation layer in the thread intersection portion of 35 μm or less. The acidic gas separation module suppresses generation of flocculated water by maintaining the generation of turbulent flow in the flow channel material, effectively suppresses damage to the surface of the acidic gas separation layer by the flow channel material in the winding-on process during manufacture, and exhibits excellent acidic gas separation efficiency.

First claim

What is claimed is:

1. An acidic gas separation module, comprising:
a perforated hollow central tube; and
a layered body that is wound on the perforated hollow central tube and has, in the following order on a porous support:
an acidic gas separation layer containing a water-absorbing polymer, a carrier, and water; and
a flow channel material with a network structure having a thread intersection portion and an arithmetical surface roughness for a surface contacting the acidic gas separation layer in the thread intersection portion of 35 μm or less.

2. The acidic gas separation module according to claim 1 , satisfying a relationship shown in the following Formula (1):
b< 2 a   Formula (1)

wherein, in Formula (1), “a” represents a mean diameter of a thread in a region other than the thread intersection portion in the flow channel material, and “b” represents a layer film thickness of the flow channel material.

3. The acidic gas separation module according to claim 1 , wherein a void area formed by the network structure of the flow channel material is in a range of from 0.5 mm 2 to 20 mm 2 .

4. The acidic gas separation module according to claim 1 , wherein, in the network structure of the flow channel material, the sum of angles formed by a direction of flow of the acidic gas to be separated and threads, with the thread intersection portion as a reference point, is 85° or more.

5. The acidic gas separation module according to claim 2 , wherein a void area formed by the network structure of the flow channel material is in a range of from 0.5 mm 2 to 20 mm 2 , and, in the network structure of the flow channel material, the sum of angles formed by a direction of flow of the acidic gas to be separated and threads, with the thread intersection portion as a reference point, is 85° or more.

6. The acidic gas separation module according to claim 1 , wherein the network structure of the flow channel material is formed with a thread comprising at least one resin selected from the group consisting of polyester, polypropylene, polyamide, polyphenylene sulfide, polytetrafluoroethylene, polyether ether ketone and polyvinylidene chloride.

7. The acidic gas separation module according to claim 1 , wherein the carrier is at least one carbon dioxide carrier selected from the group consisting of cesium carbonate, cesium hydrogencarbonate, cesium hydroxide, rubidium carbonate, rubidium hydrogencarbonate and rubidium hydroxide.

8. The acidic gas separation module according to claim 5 , wherein the network structure of the flow channel material is formed with a thread comprising at least one resin selected from the group consisting of polyester, polypropylene, polyamide, polyphenylene sulfide, polytetrafluoroethylene, polyether ether ketone and polyvinylidene chloride, and the carrier is at least one carbon dioxide carrier selected from the group consisting of cesium carbonate, cesium hydrogencarbonate, cesium hydroxide, rubidium carbonate, rubidium hydrogencarbonate and rubidium hydroxide.

9. The acidic gas separation module according to claim 1 , wherein a material for the porous support is at least one resin material selected from the group consisting of polyethylene, polystyrene, polyethylene terephthalate, polytetrafluoroethylene, polyether sulfone, polyphenylene sulfide, polysulfone, polypropylene, polyether imide, polyether ether ketone and polyvinylidene fluoride.

10. The acidic gas separation module according to claim 1 , wherein the water-absorbing polymer is at least one selected from the group consisting of a polyvinyl alcohol-polyacrylic acid copolymer, polyvinyl alcohol, polyacrylic acid, polyacrylic acid salts, polyvinyl butyral, poly-N-vinyl pyrrolidone, poly-N-vinyl acetamide and polyacrylamide.

11. The acidic gas separation module according to claim 8 , wherein a material for the porous support is at least one resin material selected from the group consisting of polyethylene, polystyrene, polyethylene terephthalate, polytetrafluoroethylene, polyether sulfone, polyphenylene sulfide, polysulfone, polypropylene, polyether imide, polyether ether ketone and polyvinylidene fluoride, and the water-absorbing polymer is at least one selected from the group consisting of a polyvinyl alcohol-polyacrylic acid copolymer, polyvinyl alcohol, polyacrylic acid, polyacrylic acid salts, polyvinyl butyral, poly-N-vinyl pyrrolidone, poly-N-vinyl acetamide and polyacrylamide.

12. The acidic gas separation module according to claim 1 , wherein the acidic gas separation layer further comprises a thickening polysaccharide.

13. The acidic gas separation module according to claim 1 , wherein the water-absorbing polymer comprises a crosslinked structure based on a crosslinking agent.

14. The acidic gas separation module according to claim 11 , wherein the acidic gas separation layer further comprises a thickening polysaccharide, and the water-absorbing polymer comprises a crosslinked structure based on a crosslinking agent.

15. The acidic gas separation module according to claim 13 , wherein the crosslinking agent is at least one selected from the group consisting of a polyvalent glycidyl ether, a polyhydric alcohol, a polyvalent isocyanate, a polyvalent aziridine, a haloepoxy compound, a polyvalent aldehyde and a polyvalent amine.

16. The acidic gas separation module according to claim 14 , wherein the crosslinking agent is at least one selected from the group consisting of a polyvalent glycidyl ether, a polyhydric alcohol, a polyvalent isocyanate, a polyvalent aziridine, a haloepoxy compound, a polyvalent aldehyde and a polyvalent amine.

17. The acidic gas separation module according to claim 1 , wherein the acidic gas separation layer further comprises at least one carbon dioxide absorption accelerator selected from the group consisting of nitrogen-containing compounds and sulfur compounds.

18. The acidic gas separation module according to claim 16 , wherein the acidic gas separation layer further comprises at least one carbon dioxide absorption accelerator selected from the group consisting of nitrogen-containing compounds and sulfur compounds.

19. A method for manufacturing an acidic gas separation module, the method comprising:
forming an acidic gas separation complex comprising a porous support and an acidic gas separation layer by forming an acidic gas separation layer containing a water-absorbing polymer, a carrier, and water on the porous support; and
winding, around a perforated hollow central tube, a layered body comprising:
the porous support;
the acidic gas separation layer; and
a flow channel material, which has a network structure having a thread intersection portion and an arithmetical surface roughness of a surface contacting the acidic gas separation layer in the thread intersection portion of 35 μm or less, the layered body being formed by disposing the flow channel material at a surface at a side of the acidic gas separation layer of the acidic gas separation complex.

20. The method for manufacturing an acidic gas separation module according to claim 19 , further comprising:
obtaining the flow channel material with a network shape using a thread comprising at least one resin selected from the group consisting of polyester, polypropylene, polyamide, polyphenylene sulfide, polytetrafluoroethylene, polyether ether ketone and polyvinylidene fluoride; and
performing thermal calendering on the obtained flow channel material to impart an arithmetical surface roughness of 35 μm or less at a surface contacting the acidic gas sepa

Assignees

• Fujifilm Corp

Inventors

• Mochizuki Yusuke
• Hosoya Yoichi

Classifications

• B01D53/62

  Carbon oxides · CPC title

• B01D53/81 Primary

  Solid phase processes · CPC title

• B01D2257/504

  Carbon dioxide · CPC title

• B32B2307/724

  Permeability to gases, adsorption · CPC title

• B01D2251/30

  Alkali metal compounds · CPC title