Granted Patent B2

US 8,623,123 · App. 13/910,014 · Granted Jan 7, 2014

Inventors: Matthias Seiler (Griesheim, DE); Jöm Rolker (Alzenau, DE); Rolf Schneider (Gründau-Rothenbergen, DE); Bernd Glöckler (Rodenbach, DE); Axel Kobus (Langen, DE); Wolfgang Benesch (Bochum, DE); Thomas Riethmann (Essen, DE); Hermann Winkler (Recklinghausen, DE); Jens Reich (Mühlheim an der Ruhr, DE); Helmut Brüggemann (Moers, DE)

Assignee: Evonik Degussa GmbH

Abstract

Claims (16)

1. A device for separating CO 2 from a gas mixture, said device comprising an absorption unit, a desorption unit and a circulating absorption medium, wherein said absorption medium comprises water and one or more amines of formula (I)

wherein R 2 and R 2 independently of one another are hydrogen or an alkyl moiety with the proviso that R 2 and R 2 are not both hydrogen.

2. The device of claim 1 , wherein the absorption medium comprises water and amines of formula (I) in a weight ratio of from 10:1 to 1:10.

3. The device of claim 1 , wherein the absorption medium comprises water and amines of formula (I) in a weight ratio of from 5:1 to 1:1.

4. The device of claim 1 , wherein the absorption medium comprises water and amines of formula (I) in a weight ratio of from 4:1 to 2:1.

5. The device of claim 1 , wherein the absorption medium comprises at least 5% by weight of amines of formula (I).

6. The device of claim 1 , wherein the absorption medium comprises one or more ionic liquids.

7. The device of claim 6 , wherein the absorption medium comprises water and ionic liquids in a weight ratio of from 10:1 to 1:1.

8. The device of claim 7 , wherein the absorption medium comprises water and amines of formula (I) in a weight ratio of from 5:1 to 1:1.

9. The device of claim 7 , wherein the absorption medium comprises water and amines of formula (I) in a weight ratio of from 4:1 to 2:1.

10. The device of claim 7 , wherein the absorption medium comprises at least 5% by weight of amines of formula (I).

11. The device of claim 7 , wherein the absorption medium comprises ionic liquid and amines of formula (I) in a weight ratio of from 3:1 to 1:10.

12. The device of claim 7 , wherein the absorption medium comprises ionic liquid and amines of formula (I) in a weight ratio of from 2:1 to 1:5.

13. The device of claim 12 , wherein the absorption medium comprises water and amines of formula (I) in a weight ratio of from 5:1 to 1:1.

14. The device of claim 12 , wherein the absorption medium comprises water and amines of formula (I) in a weight ratio of from 4:1 to 2:1.

15. The device of claim 12 , wherein the absorption medium comprises at least 5% by weight of amines of formula (I).

Assignments (9)

Priority Claims (1)

Continuity (3)