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:
Jan. 19, 1988
Filed:
May. 06, 1986
Karl H Laue, Hattingen, DE;
Claus Flockenhaus, Essen, DE;
Erich Hackler, Essen, DE;
Blagoje Levkov, Wiesbaden, DE;
Daniel Grimm, Schlangenbad-Barstadt, DE;
Hartmut Kainer, Wiesbaden, DE;
Hermann Stein, Bad Durkheim, DE;
Hans-Eugen Buhler, Konigstein, DE;
Didier Engineering GmbH, Essen, DE;
Didier-Werke AG, Wiesbaden, DE;
Abstract
A process for the removal of nitrogen oxides and soot from exhaust gases from machines and combustion installations burning heavy fuel oil by means of free-passage catalysts at increased temperatures with the addition of ammonia into the exhaust gas stream ahead of the catalysts. To make the process mre effective, the soot adhering to the catalyst surfaces is removed by burning it off and/or by friction resulting from the admixture of sand, ash or similar abrasive mixtures into the exhaust gas stream ahead of the catalysts.