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. 07, 1987
Filed:
Aug. 22, 1985
Applicant:
Inventors:
Hans-Eugen Buhler, Konigstein, DE;
Hermann Stein, Taunusstein, DE;
Blagoje Levkov, Wiesbaden, DE;
Hartmut Kainer, Wiesbaden, DE;
Horst Kalfa, Idstein, DE;
Daniel Grimm, Schlangenbad-Barstadt, DE;
Assignee:
Didier-Werke AG, Weisbaden, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; B01D / ; C01B / ;
U.S. Cl.
CPC ...
502 34 ; 55 74 ; 55387 ; 422110 ; 423239 ; 502-6 ; 502515 ;
Abstract
In a process for the reactivation of a catalyst, which is used for the removal of NO.sub.x, oxides of nitrogen, from exhaust gases, the catalyst should be capable of easy reactivation. For this purpose, when the catalyst starts to lose its activity, it is exposed in a reducing atmosphere to a carbon monoxide current. In an apparatus for the execution of the process, the catalyst is placed in two separate chambers. The carbon monoxide stream is directed alternately to both chambers.