IMROVED ALKANOLAMINES FOR CO2 REMOVAL FROM GAS STREAMS

• US 20110116997A1
• Filed: 04/01/2009
• Published: 05/19/2011
• Est. Priority Date: 04/01/2008
• Status: Active Grant

• Current Assignee: Commonwealth Scientific & Industrial Research Organisation (Commonwealth Of Australia As Represented By Department Of Industry, Innovation, Climate Change, Science, Research And Tertiary Education)
• Original Assignee: Commonwealth Scientific & Industrial Research Organisation (Commonwealth Of Australia As Represented By Department Of Industry, Innovation, Climate Change, Science, Research And Tertiary Education)
• Inventors: Yang, Qi, Puxty, Graeme Douglas, Rowland, Robert Cameron, Allport, Andrew Wayne, Bown, Mark, Attalla, Moetaz Ibrahim
• Granted Patent: US 8,486,356 B2
• Time in Patent Office: Days
• US Class Current: 423/228
• CPC Class Codes: B01D 2257/504 Carbon dioxide
• CPC Class Codes: B01D 53/1406 Multiple stage absorption
• CPC Class Codes: B01D 53/1425 Regeneration of liquid absorbents
• CPC Class Codes: B01D 53/1475 Removing carbon dioxide
• CPC Class Codes: B01D 53/1493 Selection of liquid materials for use as absorbents
• CPC Class Codes: Y02A 50/20 Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
• CPC Class Codes: Y02C 20/40 of CO2

Abstract

A process for the capture of CO₂ from gas streams comprising contacting a CO₂ containing gas stream with an aqueous alkanolamine solution, wherein the alkanolamine is selected from the group consisting of: 3-piperidinemethanol, Tricine, 3-quinuclidinol, 3-piperidino-1,2-propanediol and their salts.

Claims

1. A process for the capture of CO₂ from gas streams comprising contacting a CO₂ containing gas stream with an aqueous alkanolamine solution, wherein the alkanolamine is selected from the group consisting of:

3-piperidinemethanol, Tricine, 3-quinuclidinol, 3-piperidino-1,2-propanediol and their salts.

2. A process according to claim 1, wherein the alkanolamine is 3-piperidinemethanol.

3. A process according to claim 1, wherein the alkanolamine is Tricine.

4. A process according to claim 1, wherein the alkanolamine is 3-quinuclidinol.

5. A process according to claim 1, wherein the alkanolamine is 3-piperidino-1,2-propanediol.