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:
Nov. 04, 2003
Filed:
Sep. 06, 2001
Sung-Ho Hong, Seoul, KR;
Hyun-Young Chang, Kyounggido, KR;
Seok-Joo Hong, Seoul, KR;
Dong-Won Kim, Kyounggido, KR;
Sung-Chang Hong, Seoul, KR;
Tae-Sung Park, Seoul, KR;
Dong-Sup Doh, Seoul, KR;
Soon-Kwan Jung, Seoul, KR;
Korea Power Enginering Company, Seoul, KR;
Abstract
There is disclosed a method for removing nitrogen oxides of exhaust gas using natural manganese ores. In the method, ammonia is used as a reductant to selectively reduce the nitrogen oxides in the presence of a catalyst prepared from the natural manganese ores. The catalyst allows nitrogen oxides to be completely removed from exhaust gas at a relatively low temperature of 130-250° C. without discharging unreacted ammonia through oxidation reaction. The catalyst is superior in economic terms in addition to preventing the deleterious effects which occur when discharging ammonia.