IP Library › Granted Patent US 12,420,227
Granted Patent B2
US 12,420,227 · App. 18/330,012 · Granted Sep 23, 2025

Aqueous CO2 absorbent comprising 2-amino-2-methyl-1-propanol and 3-aminopropanol

Inventors: Karl Anders Hoff (Trondheim, NO); Thor Mejdell (Trondheim, NO); Inna Kim (Trondheim, NO); Andreas Grimstvedt (Trondheim, NO); Eirik Falck Da Silva (Trondheim, NO)
Assignee: Aker Carbon Capture Norway AS
B01D53/1475B01D53/1493B01D2252/20405B01D2252/20421B01D2252/20484B01D2252/504B01D2258/0283Y02C20/40
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Quick Facts
Patent No.
US 12,420,227
App. No.
18/330,012
Granted
Sep 23, 2025
Kind
B2
Abstract

An aqueous CO2 absorbent comprising a combination of 2-amino-2-methyl-1-propanol (AMP) and 3-aminopropanol (AP), or AMP and 4-aminobutanol (AB), is described. A method for capturing CO2 from a CO2 containing gas using the mentioned absorbent, and the use of a combination of AMP and AP, or a combination of AMP and AB are also described.

Claims (8)

1. An aqueous CO 2 absorbent comprising a combination of 2-amino-2-methyl-1-propanol (AMP) and 3-aminopropanol (AP).

2. The absorbent according to claim 1 , wherein the absorbent additionally comprises any conventional additive.

3. The CO 2 absorbent according to claim 1 , wherein the concentration of AMP is from 10 to 35% by weight and the concentration of AP is from 10 to 40% by weight.

4. The CO 2 absorbent according to claim 3 , wherein the concentration of AMP is from 20 to 30% by weight.

5. The absorbent according to claim 3 , wherein the concentration of AP is from 20 to 30% by weight.

6. A method for capturing CO 2 from an CO 2 containing gas, where the CO 2 containing gas is brought in countercurrent flow to a CO 2 absorbent in an absorber to give a CO 2 depleted gas that is released into the surroundings, and a CO 2 rich absorbent that is collected in the bottom of the absorber, regenerated and recycled into the absorber, wherein the CO 2 absorbent is an aqueous CO 2 absorbent comprising a combination of 2-amino-2-methyl-1-propanol (AMP) and 3-aminopropanol (AP).

7. A method of using an aqueous solution of a combination of AMP and AP as an absorbent for CO 2 in a method for capturing CO 2 from a CO 2 containing gas, said method comprising contacting the CO 2 containing gas with the aqueous solution.

8. The method of claim 7 , where AMP is used in a concentration from 10 to 35% by weight, and AP is used in a concentration from 10 to 40% by weight.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 22, 2023
From: HOFF, KARL ANDERS; MEJDELL, THOR; KIM, INNA; GRIMSTVEDT, ANDREAS; DA SILVA, EIRIK FALCK
To: AKER ENGINEERING & TECHNOLOGY AS
Reel/Frame 064032/0378 →
MERGER AND CHANGE OF NAME Recorded Jun 22, 2023
From: AKER ENGINEERING & TECHNOLOGY AS; AKER SUBSEA AS
To: AKER SOLUTIONS AS
Reel/Frame 064032/0399 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 22, 2023
From: AKER SOLUTIONS AS
To: AKER CCUS NORWAY AS
Reel/Frame 064032/0405 →
CHANGE OF NAME Recorded Jun 22, 2023
From: AKER CCUS NORWAY AS
To: AKER CARBON CAPTURE NORWAY AS
Reel/Frame 064069/0444 →
Priority Claims (1)
NO 20121474 · Dec 7, 2012 · national
Continuity (3)
Continuation 16690791 · Nov 21, 2019
Continuation 14646936
Related Publication 20230321589A1 · Oct 12, 2023
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