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:
Sep. 16, 2008
Filed:
Jun. 05, 2003
Hermann Bach, Heiligenroth, DE;
Harald Kömpel, Neu-Isenburg, DE;
Bernd Ahlers, Frankfurt am Main, DE;
Peter Trabold, Darmstadt, DE;
Frank Höper, Karben, DE;
Hermann Bach, Heiligenroth, DE;
Harald Kömpel, Neu-Isenburg, DE;
Bernd Ahlers, Frankfurt am Main, DE;
Peter Trabold, Darmstadt, DE;
Frank Höper, Karben, DE;
Lurgi AG, Frankfurt/Main, DE;
Abstract
In a method for the production of propylene, a charge stream containing Cto Colefins is evaporated, superheated, mixed with hot water vapor, the olefins vapor mixture converted on a zeolite catalyst, the reaction mixture formed thereby cooled, and then partially condensed. In order to increase the yield of propylene, the gaseous phase containing ethylene, propylene, Cto Colefins, and additional hydrocarbons that is accumulated during the partial condensation is compressed, the gaseous and liquid phase containing propylene, ethylene, and other light hydrocarbons that exit from the compression step is separated into a gaseous phase containing propylene, ethylene, and other light hydrocarbons and a liquid phase containing C+ olefins, and the liquid phase is separated into a fraction containing Cto Colefins and a fraction containing C+ olefins.