Evonik Degussa Gmbh

Thyssenkrupp Industrial Solutions Ag

Evonik Operations Gmbh

Michael Dopfer

Marc Brendel

Manfred Bärz

Jürgen Schemel

Willi Hofen

Norbert Ullrich

Bernd Jaeger

Johannes Kowoll

Matthias Pascaly

Wolfgang Wöll

David Bolz

Bärbel Kolbe

Peter Porscha

Robert Jahn

Niels Bredemeyer

Maik Bernhard

Dana Pfenning

In a process for the epoxidation of an olefin by continuously reacting the olefin with hydrogen peroxide in a methanol solvent on a fixed bed epoxidation catalyst comprising a titanium zeolite, the hydrogen peroxide is used as an aqueous hydrogen peroxide solution made by an anthraquinone process, the aqueous hydrogen peroxide solution is mixed with methanol to give a feed mixture and this feed mixture is filtered before being contacted with the fixed bed epoxidation catalyst.

Process for the epoxidation of an olefin

Propene is continuously reacted with hydrogen peroxide in a tube bundle reactor comprising a multitude of parallel reaction tubes in the presence of a titanium silicalite catalyst arranged as a fixed bed in the reaction tubes. A cooling jacket encloses the reaction tubes, which has a feed point for cooling medium near the entry of the reaction tubes, a withdrawal point for cooling medium near the end of the reaction tubes and at least one additional withdrawal point upstream of the withdrawal point near the end of the reaction tubes. Cooling medium is fed to the feed point for cooling medium, a part of the cooling medium is withdrawn at the at least one additional withdrawal point and the remainder exits at the withdrawal point near the end of the reaction tubes.

Process and reactor for the epoxidation of propene

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Sulzbach, Germany

Michael Dopfer