Stability of flames close to Auto-Ignition temperatures Generated by Extreme Separated Gas-Air Inlets

摘要

Stabilization of the combustion of natural gas in high-temperature processes by using the auto-ignition of the fuel when mixed with highly preheated air is well known and has found applications on many occasions. Reasonably strong internal flue gas recirculation not only reduces nitric oxides emissions and increases convective heat transfer rates, but reduces local flame temperatures such that the flames become almost invisible for a human eye.