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:
Sep. 29, 2009
Filed:
Feb. 04, 2004
Applicants:
Timo Nissinen, Tampere, FI;
Jari Kukkonen, Oulu, FI;
Inventors:
Timo Nissinen, Tampere, FI;
Jari Kukkonen, Oulu, FI;
Assignee:
Kemira Oyj, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/56 (2006.01); B01D 53/94 (2006.01); C09K 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a catalytic process for reducing nitrogen oxides in flue gases, in which process a reducing agent containing composition is mixed with flue gas and the mixture achieved is brought into contact with a catalyst. In accordance with the invention, the composition contains e.g. 1 to 60% of weight of ammonium formate. Especially a low freezing point can be achieved with such water containing composition. In addition, a good reduction conversion is achieved even at low temperatures.