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:
Aug. 05, 2025
Filed:
Jul. 04, 2022
Applicant:
Tunap Gmbh & Co. KG, Wolfratshausen, DE;
Inventors:
Volker Knöthig, Weilheim in Oberbayern, DE;
Alex Lange, Fürholzen, DE;
Sergej Pawlitschek, Munich, DE;
Assignee:
TUNAP GMBH & CO. KG, Wolfratshausen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C11D 7/50 (2006.01); B01D 53/94 (2006.01); C11D 1/46 (2006.01); C11D 1/52 (2006.01); C11D 1/65 (2006.01); F01N 3/20 (2006.01);
U.S. Cl.
CPC ...
C11D 7/5013 (2013.01); B01D 53/9418 (2013.01); C11D 7/5022 (2013.01); F01N 3/2066 (2013.01); B01D 2251/2067 (2013.01); B01D 2257/404 (2013.01); B01D 2258/012 (2013.01); C11D 1/46 (2013.01); C11D 1/52 (2013.01); C11D 1/652 (2013.01); C11D 7/5086 (2013.01); C11D 7/5095 (2013.01); F01N 3/206 (2013.01); F01N 3/208 (2013.01); F01N 2430/04 (2013.01); F01N 2550/05 (2013.01); F01N 2610/01 (2013.01); F01N 2610/02 (2013.01); F01N 2610/1453 (2013.01);
Abstract
The present disclosure relates to the use of a polar solvent as an additive to a solution containing a component that releases ammonia at above 200° C. for the removal of deposits or impurities in a selective catalytic reduction system, wherein the polar solvent has a boiling point at 101.3 kPa of at least 140° C. The present disclosure further relates to a method of removing deposits or impurities in a selective catalytic reduction system and a method of operating a selective catalytic reduction system.