Patent ID: 7909601

Claim:
A staged-air burner for the combustion of gaseous and non-gaseous fuel and air in a furnace, said burner comprising: (a) a primary air chamber for supplying a first portion of air; (b) a burner tube having an upstream end and a downstream end; (c) a burner tip having an outer diameter, said burner tip mounted on said downstream end of said burner tube adjacent a first opening in the furnace, so that combustion of the fuel takes place downstream of said burner tip producing a gaseous fuel flame; (d) at least one air port in fluid communication with a secondary air chamber for supplying a second portion of fresh or ambient air, said at least one air port radially positioned beyond said outer diameter of said burner tip; and (e) at least one non-gaseous fuel gun for supplying atomized non-gaseous fuel, said at least one non-gaseous fuel gun having at least one fuel discharge orifice, said at least one non-gaseous fuel gun positioned within said at least one air port.