Gas absorption material, use of same for gas absorption, gas absorption body, gas absorption method, acidic gas absorption device, acidic gas recovery device, water vapor absorption device, water vapor recovery device, heat exchanger, and heat recovery device

Patent metadata

Field	Value
Publication number	US-10987652-B2
Application number	US-201515504110-A
Country	US
Kind code	B2
Filing date	Aug 14, 2015
Priority date	Aug 15, 2014
Publication date	Apr 27, 2021
Grant date	Apr 27, 2021

Abstract

A gel particle film of amino group-having polymer compound particles has a large acid gas absorption amount and desorption amount per unit volume, and has a high acid gas absorption rate and desorption rate per unit mass, and further has high stability. A gas absorber having the gel particle film supported on a carrier is useful as an acid gas separation material having good energy efficiency.

First claim

The invention claimed is:

1. A gas absorption material, comprising particles of a polymer compound containing amino groups and an amine-containing compound having a molecular weight of 61 to 10000, wherein the polymer compound containing amino groups reversibly absorbs and desorbs an acid gas.

2. The gas absorption material according to claim 1 , wherein the polymer compound particles are hydrogel particles.

3. The gas absorption material according to claim 1 , which is for absorbing an acid gas from a gas containing a water vapor and an acid gas.

4. The gas absorption material according to claim 1 , wherein the polymer compound that constitutes the polymer compound particles is a polymer of a monomer component containing an amino group-having monomer.

5. The gas absorption material according to claim 1 , wherein the particle size of the polymer compound particles in a dry state is 5 nm to 10 μm.

6. The gas absorption material according to claim 1 , wherein the polymer compound particles undergo phase transition by temperature change, and
the phase transition temperature of the polymer compound particles falls within a range of 10 to 95° C.

7. The gas absorption material according to claim 1 , wherein the hydrodynamic particle size of the polymer compound particles that have been swollen and dispersed in water is 10 nm to 50 μm.

8. The gas absorption material according to claim 1 , which is for gas absorption and desorption.

9. A gas absorber, comprising a gel particle film of a gas absorption material comprising a polymer compound containing amino groups, and a carrier for supporting the gel particle film, wherein the polymer compound containing amino groups reversibly absorbs and desorbs an acid gas.

10. The gas absorber according to claim 9 , wherein the carrier is a thin sheet or a roll.

11. The gas absorber according to claim 10 , wherein the thin sheet is a metal foil.

12. The gas absorber according to claim 10 , wherein the thin sheet is a carbon material.

13. The gas absorber according to claim 10 , wherein the thin sheet is a resin film.

14. The gas absorber according to claim 9 , wherein the carrier is a fiber aggregate.

15. The gas absorber according to claim 14 , wherein the fiber aggregate contains inorganic fibers.

16. The gas absorber according to claim 15 , wherein the inorganic fibers are metal fibers.

17. The gas absorber according to claim 16 , wherein the metal fibers contain at least any of stainless steel fibers and aluminum fibers.

18. The gas absorber according to claim 16 , wherein the metal fibers contain nickel fibers.

19. The gas absorber according to claim 16 , wherein the metal fibers are sintered metal fibers.

20. The gas absorber according to claim 15 , wherein the inorganic fibers are carbon fibers.

21. The gas absorber according to claim 14 , wherein the fiber aggregate contains organic fibers.

22. The gas absorber according to claim 21 , wherein the fiber aggregate is paper.

23. The gas absorber according to claim 9 , wherein the carrier is a porous substance.

24. The gas absorber according to claim 23 , wherein the porous substance is a foamed metal.

25. The gas absorber according to claim 9 , wherein the surface of the carrier functions as a heat-conductive face of a heat exchanger.

26. The gas absorber according to claim 9 , wherein the gel particle film further contains a film stabilizer.

27. The gas absorber according to claim 26 , wherein the film stabilizer contains a crosslinking agent.

28. The gas absorber according to claim 9 , wherein the gel particle film contains an absorption promoter.

29. The gas absorber according to claim 9 , wherein the gel particle film contains an amine-containing compound having a molecular weight of 61 to 10000.

30. The gas absorption material according to claim 1 , wherein the amine-containing compound satisfies at least one of the following conditions A and B:
Condition A
The amine-containing compound contains plural amino groups, and at least one of the plural amino groups is a tertiary amino group or a cyclic amino group; and
Condition B
The amine-containing compound contains a secondary amino group and plural hydroxyl groups.

31. The gas absorber according to claim 9 , wherein the thickness of the gel particle film is 1 μm to 300 μm and the gel particle film contains an amine-containing compound having a molecular weight of 61 to 10000, and wherein the amine-containing compound satisfies at least one of the following conditions C, D and E:
Condition C
The amine-containing compound contains plural amino groups;
Condition D
The amine-containing compound contains a cyclic amino group; and
Condition E
The amine-containing compound contains an amino group and a hydroxyl group.

Assignees

• Univ Kyushu Nat Univ Corp

Inventors

• Hoshino Yu
• Miura Yoshiko
• OHSHIRO Yukinori

Classifications

• Y02P20/151

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• B01D2253/202

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• B01D2257/504

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