Patent · US Expired

Method for carrying out the distillation or reactive distillation of a mixture containing at least one toxic constituent

US7431804B2 · kind B2 · utility

0Cited by

10References

6Claims

0Family size

Assignee

BASF SE

Inventors

Eckhard Ströfer · Mannheim, DE
Gerd Kaibel · Lampertheim, DE
Achim Stammer · Freinsheim, DE
Carsten Oost · Bad Dürkheim, DE
Martin Sohn · Mannheim, DE
Manfred Stroezel · Ilvesheim, DE
Walter Dobler · Schwetzingen, DE

Key dates

Filing date	May 17, 2002
Grant date	Oct 7, 2008
Priority date	—
Expiry date	Nov 24, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S261/72
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process is proposed for the distillation or reactive distillation of a mixture that includes at least one toxic component, the process being carried out in a column containing a structured packing, having at least one packing layer (1) having a lower end (2) and an upper end (3), the packing layer having an internal geometry varying over its height, in such a manner that in the distillation or reactive distillation, in a first, lower region (6) of the packing layer (1) a bubbling layer having a predominantly disperse gas phase can be established and simultaneously in a second, upper region (7) of the packing layer (1) a film flow having a predominantly continuous gas phase can be established.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.