烟气分析在120t转炉的应用
Application of Flue Gas Analysis in 120 t Converter
彭琦 1贺增平 1梁少鹏 1刘勋 1周勇1
作者信息
- 1. 陕西龙门钢铁有限责任公司,陕西 韩城 715405
- 折叠
摘要
利用转炉烟气分析系统获取烟气成分与流量数据,依据碳平衡原理构建碳积分模型,动态预测钢水中的碳含量(质量分数)及温度.该模型在陕西龙门钢铁有限公司的120 t转炉上得到应用,有效指导了转炉冶炼过程,减少了终点补吹次数,并降低了 一次脱磷率.研究结果表明,模型显示出良好的适应性与高准确度,对于该公司120 t转炉的冶炼生产起到了重要的指导作用.在排除了铁水成分、温度测量异常以及废钢重量异常等因素影响的有效炉次中,当终点碳含量w(C)＜0.2％时,该模型预测的偏差＜0.02％,准确率达到86.38％.当终点温度预测的偏差＜15℃时,准确率高达94.42％.同时,满足碳含量与温度预测准确的C-T双命中率为81.49％,达到了冶炼过程对终点命中率的要求.
Abstract
In this study,a carbon integral model was developed to predict the carbon content and temperature of molten steel based on the carbon balance principle.The model was applied to a 120-ton converter at Longmen Iron and Steel Co.,Ltd.in Shaanxi Province,which effectively guides the converter smelting process,reduces the end-point refilling times and reduces one time dephosphorization rate.The results show that the model shows good adaptability and high accuracy,and plays an important role in the company's 120-ton converter smelting production.When the end-point carbon content(w(C))is less than 0.2％,the predicted deviation of the model is less than 0.02％in the effective furnace with the factors such as composition of hot metal,abnormal temperature measurement and abnormal weight of scrap excluded,the accuracy of the prediction was 86.38％,the accuracy of the prediction was 94.42％when the deviation was less than 15 ℃,and the accuracy of the prediction of C-T was 81.49％,the requirement of terminal hit ratio in smelting process is achieved.
关键词
转炉炼钢/烟气分析/碳积分模型/钢水碳含量/C-T双命中率Key words
converter steelmaking/flue gas analysis/carbon integration model/carbon content in molten steel/C-T double hit rate引用本文复制引用
出版年
2024
NETL
NSTL
万方数据