Abstract
Combustion of heavy oil C and LCO as well as kerosene and heavy oil A was investigated with high temperature air combustion technology. As decreasing air ratio, the combustion took place in the whole of furnace and the luminous flame observed in the combustion at high air ratio was diminished. The emission of NOx was drastically decreased at low air ratio because uniform temperature distribution was observed even in these oil combustion. Even in the combustion of LCO, with temperature air condition. Introduction of high temperature steam causes the reduction of NOx probably because of decreasing the flame temperature.
