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:
Dec. 12, 1995
Filed:
Sep. 06, 1994
Ralf Sigling, Baiersdorf, DE;
Franz Lankes, Hemhofen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
Combustion systems have a combustion apparatus, heating surfaces downstream of the combustion apparatus in a flue gas stream, and a deNO.sub.x catalyst. A method for reducing nitrogen oxides in the flue gas of the combustion systems includes selectively assigning the deNO.sub.x catalyst to a position inside and a position outside the flue gas stream as a function of a nitrogen oxide concentration or of a selected energy carrier. An apparatus for reducing nitrogen oxides in the flue gas of the combustion system includes a device for selectively assigning the deNO.sub.x catalyst to a position inside and a position outside a line through which the flue gas flows.