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:
Apr. 08, 2014
Filed:
May. 26, 2006
Peter D. Marx, Hooksett, NH (US);
Robert W. Pickering, Concord, NH (US);
Charles E. Trippel, Marlborough, CT (US);
Peter D. Marx, Hooksett, NH (US);
Robert W. Pickering, Concord, NH (US);
Charles E. Trippel, Marlborough, CT (US);
Fuel Tech, Inc., Warrenville, IL (US);
Abstract
A replacement burner system which facilitates reduction of nitrous oxide produced during combustion of a fuel. The replacement burner system comprising a fuel supply duct having an inlet and an outlet with a fuel deflector located within the fuel supply duct to facilitate redistribution of a flow of the fuel. An adjustable coal nozzle is located within the fuel supply duct between the fuel deflector and the outlet. An exterior surface of the fuel supply duct supports an air swirling device, and the air swirling device obstructs between 65% and 75% of the transverse flow area, located between an exterior surface of the fuel supply duct and the inwardly facing surface of the venturi register, after the replacement burner system is accommodated within the windbox of a combustion boiler. The air swirling device is the only component located in the windbox, between the exterior surface of the fuel supply valve and the inwardly facing surface of the venturi register, for adjusting the flow of the combustion air flowing through the venturi register.