| 摘要 |
A centrally disposed stream of gaseous fuel is provided at a pressure sufficient to direct the flame in a longitudinal direction, and a multiplicity of streams of oxygen- enriched air (or oxygen) in preferably a substantially stoichiometric amount are disposed about the stream of fuel and at a radial angle selected from approximately +20 DEG to -20 DEG , diverging from or converging towards, the longitudinal axis of the gaseous fuel stream. Next, the streams of gaseous fuel and oxygen enriched air are mixed. Finally, the mixture is combusted to form a sustainable flame having a zone of reduced temperature surrounding the flame to burn the gaseous fuel efficiently and to form relatively low levels of noxious combustion products therefrom. The oxygen- enriched air may contain up to 35% oxygen, and is fed through angled apertures 22 in an orifice plate 12 surrounding a fuel nozzle 16. <IMAGE> |
