Patent ID: 6688876
Filing Date: 2004-02-10
Classification: F23D,F23M

Abstract:
A process for combustion with the aid of a liquid fuel and a gaseous oxidizer containing from 20% to 100% volume of oxygen, comprising the steps of:injecting the fuel with an injector having an internal height d placed inside a glory hole having an internal height D at its end corresponding to the ejection of the gaseous mixture towards the zone of heating of a charge; maintaining the coefficient S defined by the relation: S=a1&it;Vequivalent-a2&it;La3&it;d&af;(2-e-L/10&it;D)â€ƒwith a1=2.5Â·10âˆ’11, seconds a2=1Â·10âˆ’9, dimensionless a3=(0.875Â·&ggr;+0.525)Â·10âˆ’6, dimensionless, at a value less than or equal to 1 for substantially the entire duration of combustion; wherein L is defined as the distance between the end of the liquid fuel injection and a downstream end in the fluid flow direction of the glory hole, Vequivalent is defined either as the equivalent velocity representative of the average velocity of the spray of drops of liquid fuel in the case of mechanical atomizers and being equal to 2.4 M/(&rgr;&pgr;d2), or a velocity equal to 0.5 times Vatomization, and &ggr; is defined as the overall (volume) percentage of oxygen in the gases at the exit of the glory hole.