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:
Apr. 18, 2023
Filed:
Jun. 22, 2022
Applicant:
Evonik Operations Gmbh, Essen, DE;
Inventors:
Philip Lutze, Dinslaken, DE;
Stephan Peitz, Oer-Erkenschwick, DE;
Armin Matthias Rix, Marl, DE;
Tanita Valèrie Six, Dortmund, DE;
Moritz Schröder, Muenster, DE;
Niklas Paul, Marl, DE;
Assignee:
Evonik Operations GmbH, Essen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 7/08 (2006.01); B01D 3/40 (2006.01); B01D 3/14 (2006.01); B01D 3/00 (2006.01);
U.S. Cl.
CPC ...
C07C 7/08 (2013.01); B01D 3/007 (2013.01); B01D 3/148 (2013.01); B01D 3/40 (2013.01);
Abstract
An extractive distillation column system contains a combination column and a side rectification column. A process can be used for separation of butenes from C4-hydrocarbon streams using the extractive distillation column system.