Removal of carbon dioxide from a fluid flow

US10279309B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Thomas Ingram · Keller, US
• Ralf Notz · Ludwigshafen, DE
• Gerald Vorberg · Ludwigshafen, DE
• Georg Sieder · Bad Dürkheim, DE
• Gustavo Adolfo Lozano Martinez · Ludwigshafen, DE
• Hugo Rafael Garcia Andarcia · Mannheim, DE

Key dates

• Filing date: Aug 20, 2015
• Grant date: May 7, 2019
• Expiry date: Oct 2, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02C20/40
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An absorbent for removing carbon dioxide from a fluid stream, comprising an aqueous solution a) of an amine of the general formula (I) in which R1, R2 and R3 are each independently selected from C1-4-alkyl and C1-4-hydroxyalkyl; each R4 is independently selected from hydrogen, C1-4alkyl and C1-4-hydroxyalkyl; each R5 is independently selected from hydrogen, C1-4-alkyl and C1-4-hydroxyalkyl; X is OH or NH(CR1R2R3); m is 2, 3, 4 or 5; n is 2, 3, 4 or 5; and o is 0 or 1; and b) at least one activator selected from b1) a sterically unhindered primary amine and/or a sterically unhindered secondary amine; and a carboanhydrase. The absorbent allows rapid absorption of carbon dioxide from fluid streams.