The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 2019
Filed:
Nov. 25, 2016
Evonik Degussa Gmbh, Essen, DE;
Thyssenkrupp Industrial Solutions Ag, Essen, DE;
Willi Hofen, Rodenbach, DE;
Thomas Haas, Münster, DE;
Wolfgang Wöll, Maintal, DE;
Bärbel Kolbe, Witten, DE;
Hans-Christian Dietz, Hattersheim, DE;
Marc Brendel, Bruchköbel, DE;
Bernd Jaeger, Bickenback, DE;
Manfred Bärz, Freigericht, DE;
Michael Kleiber, Hattersheim, DE;
Evonik Degussa GmbH, Essen, DE;
thyssenkrupp Industrial Solutions AG, Essen, DE;
Abstract
In a process for the epoxidation of propene, comprising the steps of reacting propene with hydrogen peroxide, separating propene oxide and a recovered propene stream from the reaction mixture, separating propane from all or a part of the recovered propene stream in a Csplitter column, and passing the overhead product stream of the Csplitter column to the epoxidation step, a propane starting material with a propane fraction of from 0.002 to 0.10 is used, the epoxidation is operated to provide a propane fraction in the reaction mixture of from 0.05 to 0.20 and the Csplitter column is operated to provide an overhead product stream which comprises a propane fraction of at least 0.04 in order to reduce the size and the energy consumption of the Csplitter column.