8th International Congress on Science and Technology of Ironmaking - ICSTI 2018

Combustion processes of heating gas for 7.63m coke oven in Shougang were simulated by the adoption of CFD modeling. Through calculation and analysis, the following conclusions were obtained: (1) As the heating gas flow rate decreased, the average velocity of gas inside the combustion chamber was reduced; (2)When the gas flow rate in the vertical flue was reduced by 5m3/h, the average temperature in the combustion chamber was decreased by 0.55℃ and the maximum temperature was decreased by 1℃. It meant reducing the gas flow rate in the vertical flue by 5m3/h had little effect on the overall oven temperature. (3) The reverse operation of gas can increase the internal temperature of the combustion chamber. (4)Increasing the air flow rate at the bottom of the vertical flue, meanwhile, reducing the air flow rate in the middle and upper part can obviously increase the average temperature of the combustion chamber, decrease the maximum temperature and improve the uniformity of the overall oven temperature.