ULTRA-LOW NOX BURNER ASSEMBLY

摘要

A burner assembly comprising (a) an elongated body having a periphery, a discharge end adjacent a combustion zone, and an axis, wherein the axis extends into the combustion zone; (b) one or more fuel nozzles disposed at the discharge end of the elongated body and adapted to discharge a fuel into the combustion zone; and (c) an auxiliary burner disposed within the elongated body and adapted to combust a fuel with an oxygen-containing gas having a composition in the range of 20.9 vol% to greater than 99.5 vol% oxygen and to discharge combustion products therefrom into the combustion zone; wherein at least one of the fuel nozzles is characterized by a shape factor, .sigma. that is greater than about 10, wherein .sigma. is a dimensionless parameter defined as .sigma. =P2/2A where P is the perimeter dimension of the discharge opening and A is the area of the discharge opening.