초록 ▼

A burner for use in furnaces such as in steam cracking. The burner includes a primary air chamber for providing at least a portion of the combustion air, a burner tube having an upstream end and a downstream end, a fuel orifice located adjacent the upstream end of the burner tube, for introducing ga

A burner for use in furnaces such as in steam cracking. The burner includes a primary air chamber for providing at least a portion of the combustion air, a burner tube having an upstream end and a downstream end, a fuel orifice located adjacent the upstream end of the burner tube, for introducing gaseous fuel into the burner tube, a burner tip having an outer diameter mounted on the downstream end of the burner tube adjacent a first opening in the furnace, so that combustion of the gaseous fuel takes place downstream of the burner tip producing a gaseous fuel flame, at least one non-gaseous fuel gun, the at least one non-gaseous fuel gun having at least one fuel discharge orifice, the at least one non-gaseous fuel gun being radially positioned beyond the outer diameter of the burner tip, wherein the at least one non-gaseous discharge orifice of the at least one non-gaseous fuel gun is positioned so that the non-gaseous fuel is injected into the gaseous fuel flame, whereby a portion of the non-gaseous fuel flame vaporizes prior to combustion and stabilizes the non-gaseous fuel flame.

대표청구항 ▼

The invention claimed is: 1. A staged-air dual-fuel burner for the combustion of gaseous and non-gaseous fuels and air in a furnace, said burner comprising:(a) a primary air chamber for providing at least a portion of the combustion air;(b) a burner tube having an upstream end and a downstream end;(

The invention claimed is: 1. A staged-air dual-fuel burner for the combustion of gaseous and non-gaseous fuels and air in a furnace, said burner comprising:(a) a primary air chamber for providing at least a portion of the combustion air;(b) a burner tube having an upstream end and a downstream end;(c) a fuel orifice located adjacent the upstream end of said burner tube, for introducing gaseous fuel into said burner tube;(d) a burner tip having an outer diameter mounted on said downstream end of said burner tube adjacent a first opening in the furnace, so that combustion of the gaseous fuel takes place downstream of said burner tip producing a gaseous fuel flame;(e) at least one non-gaseous fuel gun, said at least one non-gaseous fuel gun having at least one fuel discharge orifice, said at least one non-gaseous fuel gun being radially positioned beyond said outer diameter of said burner tip, the radial positioning of said non-gaseous fuel guns enables the combustion of the gaseous fuel to stabilize non-gaseous fuel combustion, wherein said at least one non-gaseous fuel gun comprises a plurality of non-gaseous fuel guns for supplying non-gaseous fuel;(f) at least one air port in fluid communication with a secondary air chamber for supplying a second portion of fresh or ambient air;(g) a peripheral tile which peripherally surrounds said burner tip; and(h) a burner floor which surrounds said peripheral tile, said burner floor having a plurality of radially disposed openings for placement of said plurality of non-gaseous fuel guns within said openings of said burner floor;wherein said at least one non-gaseous discharge orifice of said at least one non-gaseous fuel gun is positioned so that the non-gaseous fuel is injected into the gaseous fuel flame, whereby a portion of the non-gaseous fuel flame vaporizes prior to combustion and stabilizes the non-gaseous fuel flame.