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. 09, 1994
Filed:
Nov. 24, 1992
Applicant:
Inventors:
Assignee:
Bluenox Japan Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F23J / ;
U.S. Cl.
CPC ...
431-4 ; 431190 ; 110342 ; 110348 ;
Abstract
In a device for removing nitrogen oxides from exhaust gas of a combustion device by spraying a treatment agent capable of chemically reducing nitrogen oxides contained in the exhaust gas from an injector in a combustion chamber or an exhaust passage of the combustion device, the effectiveness of the treatment agent is optimized by detecting a combustion condition of the combustion device, and supplying water and at least one treatment agent in a selective and alternating manner according the detected combustion condition.