Combustion stage employing a gas rich in oxygen and a gas depleted in oxygen

摘要

Combustion of a fuel using an oxygenated gas in which a fuel jet is injected and two jets of oxygen-rich gas to engender incomplete combustion, followed by injection of an oxygen-depleted gas to complete combustion of residual unburnt fuel. - The combustion process entails an injection of fuel and two jets of oxygen-rich gas, the first being injected in contact with the fuel to achieve incomplete combustion, the resulting gases comprising still part of the fuel, then the second jet is injected at a distance I1 from the fuel jet ; an oxygen-depleted gas is then injected at a distance I2 from the fuel jet to enter into combustion with the second part of the fuel from the first combustion, with I2 being greater than I1. - Independent claims are also included for the burner assembly and its uses.