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:
Jun. 19, 2007
Filed:
Oct. 15, 1999
Paulus DE Lange, Wesseling, DE;
Hendrik Schönfelder, Mannheim, DE;
Michael Kämmerer, Ludwigshafen, DE;
Hans Werner Siebenhandl, Swisttal, DE;
Kaspar Evertz, Schifferstadt, DE;
Stefan Wietfeldt-haltenhoff, Erftstadt, DE;
Joachim Werther, Buchholz, DE;
Paulus De Lange, Wesseling, DE;
Hendrik Schönfelder, Mannheim, DE;
Michael Kämmerer, Ludwigshafen, DE;
Hans Werner Siebenhandl, Swisttal, DE;
Kaspar Evertz, Schifferstadt, DE;
Stefan Wietfeldt-Haltenhoff, Erftstadt, DE;
Joachim Werther, Buchholz, DE;
Basell Polyolefine GmbH, Kehl, DE;
Abstract
A method for the treatment of catalysts or catalyst carriers by: a) introducing and distributing a gas in the lower section of a reactor containing a catalyst or catalyst carrier bulk material; b) forming a fluidized bed in the reactor; c) treating the particles in the fluidized bed while removing the fine particles an/or retaining the course particles by means of a separating organ and d) discharging the reactor. To this end, a reactor bottom which tapers downwards is used.