Absorption medium for removing acid gases from a fluid stream

US8501035B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Christian Riemann · Ludwigshafen, DE
• Torsten Katz · Ludwigshafen am Rhein, DE
• Georg Sieder · Bad Dürkheim, DE
• Gerald Vorberg · Ludwigshafen, DE
• Erika Dengler · Haßloch, DE

Key dates

• Filing date: Aug 4, 2010
• Grant date: Aug 6, 2013
• Expiry date: Aug 20, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/59
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An absorption medium for removing acid gases from a fluid stream comprises an aqueous solution (A) of an alkali metal salt of an N,N-di-C1-C4-alkylaminocarboxylic acid and (B) N-hydroxyethylpiperazine. The absorption medium has a low vapor pressure and an increased resistance to oxygen. Preferred fluid streams are combustion exhaust gases or biogas.