高炉理论燃烧温度模型的修正  

Modification of Theoretical Combustion Temperature Model of BF

作　　者：王春梅[1] 周东东[2] 徐科[2] 阎岩 WANG Chunmei;ZHOU Dongdong;XU Ke;YAN Yan(Hebei University of Science and Technolog;University of Science and Technology Beijin;Shijiazhuang Iron Steel Co Ltd, Hebei Iron and Steel Grou)

机构地区：[1]河北科技大学 [2]北京科技大学 [3]河钢集团石钢公司

出　　处：《炼铁》2018年第3期11-14,共4页Ironmaking

基　　金：河北省科技计划资助项目(项目编号:172176135D)

摘　　要：随着高炉容积的增加及喷煤量的增大,传统的模型无法准确表征高炉真实的理论燃烧温度。通过对煤粉灰熔率及风口前焦炭燃烧率两个方面修正了高炉理论燃烧温度模型,并分析了焦炭燃烧率、灰分熔化率、风温、煤比、富氧率、鼓风湿度等因素对理论燃烧温度的影响,和维持高炉理论燃烧温度稳定所需的富氧率。该模型应用于国内某厂2650 m^3高炉上,结果表明,修正后的理论燃烧温度新模型计算结果与高炉实际炉况吻合良好,能够更好地体现高炉冶炼状态及炉缸热状态。The conventional combustion temperature calculation model cannot accurately represent the true theoretical combustion temperature of BF as enlargement of BF volume and increase of coal injection rate, thus it is modified in terms of pulverized coal ash melting rate and the coke combustion rate before the tuyere. Additionally, the paper also analyzes the factors that influence theoretical combustion temperature, such as coke combustion rate, ash melting rate, blast temperature, coal rate, oxygen enrichment rate and blast humidity, as well as the oxygen enrichment rate required to maintain stable theoretical combustion temperature of BF. The modified model is applied to a 2650m3 BF of a domestic steel plant and the application result demonstrates that the calculation through the modified new theoretical combustion model matches with the practical furnace conditions and can reflect the state of blast furnace smelting and the hot state of the hearth.

关 键 词：高炉 理论燃烧温度 模型 煤粉 焦炭 

分 类 号：TF531[冶金工程—钢铁冶金]