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:
Oct. 10, 2017
Filed:
Jan. 29, 2016
Applicant:
Johnson Matthey Public Limited Company, London, GB;
Inventors:
Rodney Foo, Nivelles, BE;
Rainer Leppelt, Michelau, DE;
Joerg Werner Muench, Lichtenfels, DE;
Ralf Dotzel, Nuremberg, DE;
Maria Brandmair, Fahrenzhausen, DE;
Assignee:
Johnson Matthey Public Limited Company, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 53/86 (2006.01); B01D 53/90 (2006.01); B01D 53/94 (2006.01); F01N 3/20 (2006.01);
U.S. Cl.
CPC ...
B01D 53/8609 (2013.01); B01D 53/8625 (2013.01); B01D 53/8671 (2013.01); B01D 53/8696 (2013.01); B01D 53/90 (2013.01); B01D 53/9409 (2013.01); F01N 3/208 (2013.01); B01D 2251/2067 (2013.01); B01D 2251/40 (2013.01); B01D 2255/20723 (2013.01); B01D 2255/9155 (2013.01); B01D 2257/404 (2013.01); B01D 2258/0283 (2013.01); F01N 2570/04 (2013.01); F01N 2610/01 (2013.01); F01N 2610/02 (2013.01); F01N 2900/1404 (2013.01); F01N 2900/1602 (2013.01);
Abstract
Systems and methods of continuous operation of a urea-SCR system at low temperatures (200-350° C.) in the presence of high SOx containing flue gas are described. The methods comprise introducing a solution of urea and an NOforming compound, preferably an alkaline earth metal nitrate, into an exhaust stream before the exhaust stream contacts an SCR catalyst.