Dividing wall column for fractionation of a multicomponent mixture

US8092655B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Wolfram Burst · Mannheim, DE
• Horst Hartmann · Dresden, DE
• Gerd Kaibel · Lampertheim, DE
• Guido Harms · Schifferstadt, DE

Key dates

• Filing date: Feb 14, 2001
• Grant date: Jan 10, 2012
• Expiry date: Apr 1, 2023

Classification

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

Abstract

A dividing wall column is described which includes the following segments:a) an upper column region (1),b) an enrichment section (2) of the feed section,c) a stripping section (4) of the feed section,d) an upper part (3) of the offtake section,e) a lower part (5) of the offtake section,f) an intermediate region (9) of the feed section,g) an intermediate region (10) of the offtake section andh) a lower column region (6).The dividing wall column has a dividing wall (7) is located vertically between the segments b) (2) and d) (3) and between the segments c) (4) and e) (5). The segments b) (2), d) (3), c) (4) and e) (5) have separation-active internals, Segment b (2) has a cross-sectional area Ab which is at least 10% smaller than the cross-sectional area Ad of segment d) (3), and segment c) has a cross-sectional area Ac which is at least 10% greater than the cross-sectional area Ae of segment e) (5).