The numerical simulation of temperature distribution and NO emission in furnace during baking of an 120 t AOD unit by using new regenerative baker for AOD has been carried out. And the effects of temperature of preheated air (1273~1473 K) and distance L between air inlet and fuel gas jet (0.28~0.51m) on flow field
temperature field and NO emission are analyzed. Results show that with increasing L value
the highest temperature in furnace decreases
the temperature difference of gas decreases and the amount of generating NO decreases ; with increasing preheated temperature
the temperature of gas in furnace increases and the NO content in reacting region increases. It shall meet the requirement for preheated temperature of air being 1273 K.