Distillation column and method for distilling acrylic acid

US9079122B2 · kind B2 · utility

Assignee

• Lurgi GmbH · DE

Inventors

• Jochen Bauer · Gettorf, DE
• Frank Castillo-Welter · Friedrichsdorf, DE
• Markus Kreich · Otzberg, DE
• Klaus Kirsten · Mainz, DE
• Christoph Steden · Oberursel, DE
• Dominic Walter · Salzburg, AT

Key dates

• Filing date: Dec 9, 2011
• Grant date: Jul 14, 2015
• Expiry date: Dec 9, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C51/44
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A distillation column with external circulation evaporator and a sedimentation zone in the bottom of the column, from which the evaporator circulation is fed, and use of the distillation column for the distillation of acrylic acid.