Statistical analysis of factors affecting desulfurization rate of activated coke for sintering flue gas
ZHANG Wei-li,WU Sheng-li,HU Zhong-jie
(1.School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing,Beijing 100083, China; 2.Iron Plant, Baoshan Iron and Steel Co., Ltd., Shanghai 201900, China)
Abstract：Abstract： In order to clear main factors affecting the desulfurization of activated coke for sintering flue gas, the simulation experiments and statistical analysis of production data were carried out to explore the trend of desulfurization rate from the top to bottom of desulfurization tower and the influence of various operating parameters on desulfurization rate. The simulation experiments show the pore structure of recycled activated coke is more developed and its oxygen containing functional groups increases. Then, the initial desulfurization performance of recycled activated coke is lower than that of fresh activated coke, but the later it is better than that of fresh activated coke. The desulfurization rate of the crossflow desulfurization tower from top to bottom undergoes the trend of 100%, rapid reduction, and slow reduction. Statistical analysis of the production data shows that the desulfurization rate is positively correlated with SO2 mass concentration, O2 volume fraction, H2O volume fraction, NH3 to NOx amount of substance ratio and desorption temperature, and negatively correlated with activated coke bed temperature and volume space velocity. Among them, SO2 mass concentration, volume space velocity, and activated coke bed temperature have the greatest influence on desulfurization rate. There are multiple collinear phenomena among the operating parameters. The increase of sintering air leakage rate or the increase of air replenishment will cause many operating parameters to change, but it is generally beneficial to the improvement of desulfurization rate.
张威力1，吴胜利1，胡中杰1,2. 活性焦法烧结烟气脱硫率影响因素统计解析[J]. 钢铁研究学报, 2020, 32(4): 281-288.
ZHANG Wei-li1,WU Sheng-li1,HU Zhong-jie1,2. Statistical analysis of factors affecting desulfurization rate of activated coke for sintering flue gas. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(4): 281-288.
2020, Vol. 32 
