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:
Feb. 04, 2014
Filed:
Jul. 27, 2007
Martin Dieterle, Ludwigshafen, DE;
Catharina Klanner, Ludwigshafen, DE;
Götz-peter Schindler, Ludwigshafen, DE;
Klaus Joachim Müller-engel, Stutensee, DE;
Jens Scheidel, Hirschberg, DE;
Christoph Adami, Weinheim, DE;
Martin Dieterle, Ludwigshafen, DE;
Catharina Klanner, Ludwigshafen, DE;
Götz-Peter Schindler, Ludwigshafen, DE;
Klaus Joachim Müller-Engel, Stutensee, DE;
Jens Scheidel, Hirschberg, DE;
Christoph Adami, Weinheim, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
A process for long-term operation of a continuous heterogeneously catalyzed partial dehydrogenation of a hydrocarbon to be dehydrogenated, in which a reaction gas mixture stream comprising the hydrocarbon to be dehydrogenated in a molar starting amount KW is conducted through an overall catalyst bed comprising the total amount M of dehydrogenation catalyst and the deactivation of the overall catalyst bed is counteracted in such a way that, with increasing operating time, the contribution to the conversion in the first third of the total amount M of dehydrogenation catalyst in flow direction decreases, the contribution to the conversion in the last third of the total amount M of dehydrogenation catalyst in flow direction increases, and the contribution to the conversion in the second third of the total amount M of dehydrogenation catalyst in flow direction passes through a maximum.