Optimization of Thermal Regime of Traveling Grate-Rotary Kiln-Circular Cooler Oxidized Pellet Production Based on CSCR and SNCR Flue Gas Purification Technology
Through the analysis of the operational characteristics and existing problems of CSCR and SNCR flue gas purification facilities,a control mode suitable for the current CSCR and SNCR combined flue gas treatment process in the traveling grate-rotary kiln-circular cooler pellet production line is proposed,which solves the operating bottlenecks of activated carbon agglomeration,difficulties in nitrogen oxide control,high consumption of reducing agents,and high dust emission indicator.The long-term tracking analysis of key temperatures such as those of the grate machine and circular cooler prove that when the temperature of the west No.1 hood of the grate machine is between 940 to 955℃,and the temperature of the material in rotary kiln is between 1 120 to 1 150℃,the nitrogen oxide emission index can be controlled below 25 mg/Nm3.Eventually,the goals of increasing daily output by 316 t,decreasing ammonia consumption to 1.6 kg/t,increasing the ratio of high-sulfur low-priced ores are achieved.The coke ratio in blast furnace iron-making decreases by 1.32 kg/t.
grate machineCSCRactivated carboninduration process
万方数据
维普
