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. 27, 2013
Filed:
Jan. 24, 2006
Ken-yves Haffner, Baden, CH;
Douglas Pennell, Freienwil, CH;
Christian Steinbach, Birmenstorf, CH;
Alstom Technology Ltd, Baden, CH;
Abstract
In a method for reducing the NOx emissions from a burner arrangement comprising a plurality of burners (B, . . . , Bn), in particular in a gas turbine, which burners (B, . . . , Bn) are operated in parallel and each burner supplied fuel by means of combustion air to form a flame (F, . . . , Fn), an effective drop is achieved in a simple way by virtue of the fact that at a predetermined time the flame temperatures of individual burners (B, . . . , Bn) or burner groups or differences between the flame temperatures of individual burners (B, . . . , Bn) or burner groups are measured directly or indirectly. The fuel supply to those burners or burner groups whose flame temperature exceeds a predetermined value for the flame temperature is selectively throttled in order to homogenize the flame temperatures of the burners (B, . . . , Bn).