Dividing-wall column with feed in whole or in part in the vaporous state and/or side stream take off in whole or in part in the vaporous state

US7264696B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Gerd Kaibel · Lampertheim, DE
• Christian Miller · Deidesheim, DE
• Katrin Klaβ · Mannheim, DE
• Alois Kindler · Haßloch, DE
• Werner Aquila · Mannheim, DE
• Walter Dobler · Schwetzingen, DE
• Klaus Breuer · Speyer, DE
• Achim Pommer · Bad Dürkheim, DE
• Thomas Dirnsteiner · Mainz, DE

Key dates

• Filing date: Mar 21, 2006
• Grant date: Sep 4, 2007
• Expiry date: Mar 21, 2026

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 having a dividing wall which is essentially disposed along the long direction of the column is proposed, which divides the column interior into a feed part, a take off part, an upper shared column part and a lower shared column part, with feed in whole or in part in the vaporous state of a mixture to be separated between the upper region of the feed part and the lower region of the feed part and/or side stream take off in whole or in part in the vaporous state between the upper region of the take off part and the lower region of the take off part, where if feed is in whole or in part in the vaporous state the cross-sectional area of the upper region of the feed part is increased by plane-parallel displacement of the dividing wall toward the upper region of the take off part, and/or if the side stream take off is in whole or in part in the vaporous state, the cross-sectional area of the lower region of the take off part is increased by displacement of the dividing wall toward the lower region of the feed part, in such a manner that the F factor is substantially the same in all column regions.