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. 08, 2019
Filed:
Jul. 19, 2017
Basf SE, Ludwigshafen am Rhein, DE;
Dow Global Technologies Llc, Midland, MI (US);
Joaquim Henrique Teles, Ludwigshafen am Rhein, DE;
Marvin Kramp, Ludwigshafen am Rhein, DE;
Christian Mueller, Ludwigshafen am Rhein, DE;
Nicolai Tonio Woerz, Ludwigshafen am Rhein, DE;
Bernd Metzen, Ludwigshafen am Rhein, DE;
Tobias Keller, Ludwigshafen am Rhein, DE;
Dominic Riedel, Ludwigshafen am Rhein, DE;
Heiner Schelling, Ludwigshafen am Rhein, DE;
Markus Weber, Ludwigshafen am Rhein, DE;
Daniel Urbanczyk, Ludwigshafen am Rhein, DE;
Andrei-Nicolae Parvulescu, Ludwigshafen am Rhein, DE;
Ulrike Wegerle, Worms, DE;
Ulrich Mueller, Ludwigshafen am Rhein, DE;
Meinolf Weidenbach, Stade, DE;
Werner J. Witzl, Stade, DE;
Karsten Luecke, Stade, DE;
BASF SE, Ludwigshafen am Rhein, DE;
Dow Global Technologies LLC, Midland, MI (US);
Abstract
The present invention is related to a process for preparing propylene oxide, comprising (i) providing a stream comprising propene, hydrogen peroxide or a source of hydrogen peroxide, water, and an organic solvent; (ii) passing the liquid feed stream provided in (i) into an epoxidation zone comprising an epoxidation catalyst comprising a titanium zeolite, and subjecting the liquid feed stream to epoxidation reaction conditions in the epoxidation zone, obtaining a reaction mixture comprising propene, propylene oxide, water, and the organic solvent; (iii) removing an effluent stream from the epoxidation zone, the effluent stream comprising propylene oxide, water, organic solvent, and propene; (iv) separating propene from the effluent stream by distillation, comprising (iv.1) subjecting the effluent stream to distillation conditions in a distillation unit, obtaining a gaseous top stream Senriched in propene compared to the effluent stream subjected to distillation conditions, and a liquid bottoms stream Senriched in propylene oxide, water and organic solvent compared to the effluent stream subjected to distillation conditions; (iv.2) returning a condensed portion of the stream Sto an upper part of the distillation unit.