Evonik Degussa Gmbh

Evonik Operations Gmbh

Christoph Hiller

Stefan Münzner

Robert Franke

Dirk Fridag

Michael Grass

Udo Lenz

Florian Boeck

Corinna Hecht

Benedikt Dercks

Christoph Ehlers

Rolf Schneider

Benjamin Willy

Olivier Zehnacker

Xinming Wang

Thorsten Merker

Matthias Bahlmann

Markus Lütkehaus

Werner Escher

A process for the recovery of a light boiler and a heavy boiler from a vapor stream includes introducing a vapor stream comprising a light boiler and a heavy boiler into a column, withdrawing a vapor stream () enriched in the light boiler from the top of the column and a liquid stream () enriched in the heavy boiler from the bottom of the column. The stream () is split into a stream () and a stream (). The stream () is recycled into the column and is not cooled during the recycling. A stream (), enriched in a middle boiler, is withdrawn from the middle section of the column and is split into streams () and (). The stream () is cooled in a heat exchanger and the cooled stream is recycled into the column below the top of the column. The streams () and () are withdrawn.

Process for the recovery of a light boiler and a heavy boiler from a vapor stream

The present invention relates to a method for preparing saturated C- and C-alcohols, wherein the separation of the C-alcohols and the C-alcohols is effected by means of at least one two-column system or by means of at least one dividing wall column.

Method for obtaining alcohols from aldehydes

The present invention relates to a method for preparing saturated C- and C-alcohols, wherein the ratio of C- to C-alcohols is controlled by a distillative separation of the aldehydes used.

Method for obtaining alcohols from aldehydes III

The present invention relates to a method for preparing saturated C- and C-alcohols, wherein the ratio of C- to C-alcohols is controlled by the diversion of substreams in individual method steps.

Method for obtaining alcohols from aldehydes II

The invention relates to a process for purifying an ionic liquid comprising dialkylimidazolium ions by means of stripping, wherein water vapor is used at a particular temperature. The process according to the invention is characterized in that the decomposition of the ionic liquid is minimized during the procedure of the process.

Process for purifying an ionic liquid

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Dülmen, Germany

Christoph Hiller