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:
Feb. 11, 2003
Filed:
Sep. 18, 2000
Applicant:
Inventors:
Ari Tamminen, Pirkkala, FI;
Seppo Tuominiemi, Pirkkala, FI;
Risto Hämäläinen, Tampere, FI;
Assignee:
Kvaerner Pulping Oy, Tampere, FI;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01C 3/00 ;
U.S. Cl.
CPC ...
C01C 3/00 ;
Abstract
A method of reducing NO compounds in the odor gases of a recovery boiler. In the method, ammonia in the odor gases is separated before the odor gases are combusted, the ammonia being then introduced into a recovery boiler at the pulp mill or in a separate catalyzer, where the ammonia reacts with nitrogen oxide forming water and molecular nitrogen.