Carbon dioxide separator membrane structure, method of manufacturing same, and carbon dioxide separator including same

Patent metadata

Field	Value
Publication number	US-10173178-B1
Application number	US-201615138400-A
Country	US
Kind code	B1
Filing date	Apr 26, 2016
Priority date	Apr 27, 2015
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

Abstract

A carbon dioxide membrane structure, a method of making the same, and a carbon dioxide separator including the same. The membrane structure may include a carbon dioxide separation membrane containing PVA and a carrier, and a polysulfone-based support having an average pore size ranging from about 40 to about 90 μm.

First claim

The invention claimed is:

1. A carbon dioxide separation membrane comprising:
a base polymer comprising poly vinyl alcohol (PVA);
a carrier selected from:
imidazole; and
benzimidazole;

a cross-linker comprising DETA
wherein the carbon dioxide separation membrane is configured to operate at temperatures ranging from about 80° C. to about 150° C.

2. The membrane of claim 1 , wherein the membrane has a PVA to carrier mol ratio ranging from about 5:1 to about 10:1.

3. A carbon dioxide separation membrane comprising:
a base polymer comprising poly vinyl alcohol (PVA); and
a carrier comprising PANI,
wherein the membrane has a PVA to carrier mol ratio ranging from about 275:1 to about 325:1, and
wherein the carbon dioxide separation membrane is configured to operate at temperatures ranging from about 80° C. to about 150° C.

4. The membrane of claim 1 , wherein the membrane is configured to operate at a temperature ranging from about 100 to about 140° C.

5. The membrane of claim 1 , wherein the PVA is at least about 99% hydrolyzed.

6. The membrane of claim 1 , wherein from about 20% to about 25% of monomers of the PVA are cross-linked.

7. The membrane of claim 1 , wherein the carrier comprises imidazole.

8. The membrane of claim 1 , wherein the carrier comprises benzimidazole.

9. The membrane of claim 3 , wherein the membrane is configured to operate at a temperature ranging from about 100 to about 140° C.

10. The membrane of claim 3 , wherein the PVA is at least about 99% hydrolyzed.

11. The membrane of claim 3 , wherein from about 20% to about 25% of monomers of the PVA are cross-linked.

12. The membrane of claim 3 , further comprising a cross-linker selected from:
formaldehyde;
DETA;
DETA and formaldehyde;
potassium hydroxide and formaldehyde; and
gultaraldehyde and potassium hydroxide.

13. The membrane of claim 12 , wherein when the cross-linker is formaldehyde.

Assignees

• Bloom Energy Corp
• Indian Institute Of Tech Madras

Inventors

• Deshpande Abhijit
• Varughese Susy
• Shevate Rahul
• Swaminathan Elamathi
• Ambalavanan Kadhiresan
• Malviya Shraddesh
• Karuppaiah Chockkalingam
• Ballantine Arne
• Gasda Michael

Classifications

• B01D53/228

  characterised by specific membranes · CPC title

• B01D69/125

  In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction · CPC title

• B01D2323/30

  Cross-linking · CPC title

• B01D67/0006

  by chemical reactions (in-situ polymerisation, polycondensation, cross-linking or reaction for manufacturing composite membranes B01D69/125) · CPC title

• B01D2053/221

  Devices · CPC title