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:
May. 09, 1989
Filed:
Nov. 30, 1987
Applicant:
Inventors:
Claus Flockenhaus, Essen, DE;
Karl H Laue, Hattingen, DE;
Theo Sander, Essen, DE;
Erich Hackler, Essen, DE;
Blagoje Levkov, Wiesbaden, DE;
Daniel Grimm, Schlangenbad-Baerstadt, DE;
Hartmut Kainer, Wiesbaden, DE;
Hermann Stein, Taunusstein, DE;
Assignees:
Didier Werke AG, Wiesbaden, DE;
Didier Engineering GmbH, Essen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
4232135 ; 502316 ; 423239 ; 4232453 ;
Abstract
In a process for cleaning a waste gas containing various pollutants, the exhaust gas with the pollutants is introduced directly into a reduction reactor. In the reactor, the pollutants are reduced by ammonia. The catalyst used is iron oxide material or a mixed oxide material of iron oxide and chromium oxide, or a mixture of the mixture material of the mixed oxide material and the iron oxide material.