Method and device for obtaining 1,3 pure butadiene from 1,3 raw butadiene by distillation

US7132038B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Gerd Bohner · Malsch, DE
• Klaus Kindler · Speyer, DE
• Melanie Pahl · Mannheim, DE
• Gerd Kaibel · Lampertheim, DE

Key dates

• Filing date: Nov 15, 2001
• Grant date: Nov 7, 2006
• Expiry date: Jul 8, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S203/20
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for obtaining pure 1,3-butadiene from crude 1,3-butadiene by distillation is carried out in a dividing wall column in which a dividing wall is located in the longitudinal direction of the column to form an upper common column region, a lower common column region, a feed section and an offtake section.