Multi-Function Burner and Method of Operation

A method for operating a multi-function burner comprising:

• feeding primary fuel through an annular channel, feeding oxygen through a central channel within the annular channel, and feeding an auxiliary fuel through a central lance within the central channel to produce a flame extending into a furnace having a temperature and a pressure;
• wherein an equivalence ratio of the auxiliary fuel to oxygen is maintained below 1.

An oxygen nozzle comprising:

• a hollow central shaft comprising one or more swirl vanes and one or more bleed holes positioned upstream of the one or more swirl vanes;
• a central channel surrounding the central lance configured to deliver oxygen to the reactor through an exit plane;
• wherein the cross-sectional area of the central channel where the one or more swirl vanes terminate is greater than the cross-sectional area of the central channel at the exit plane of the central channel.