北京科技大学学报Issue(6)：817-823,7.DOI:10.13374/j.issn1001-053x.2014.06.016
氧气高炉炉身喷吹煤气在炉内的分布
Injected gas distribution in oxygen blast furnaces with shaft gas injection
摘要
Abstract
The gas distribution behaviors of oxygen blast furnaces with shaft gas injection were experimentally studied using a two-directional cold model. The effects of total gas flow rate in the shaft, auxiliary tuyere diameter and location, and the ratio of injected gas flow rate to total gas flow rate in the shaft on the injected gas distribution were investigated in detail. The results show that the in-jected gas distribution in the shaft is almost dominated by the ratio of injected gas flow rate to total gas flow rate in the shaft, while the influences of total flow rate and auxiliary tuyere diameter are little. Meanwhile, the influence of radial eddy diffusion is also little in the process of gas rise in the shaft. According to isoconcentration distribution curves from experimental data, the injected gas distribution in the shaft is divided to two dissimilar zones, a main flow region of injected gas and a main flow region of upward gas. Furthermore, the penetration equation of injected gas at the injection level is deduced through the regression analysis method. In addition, the auxiliary tuyere installed in the lower part of the shaft is advantageous for iron ore indirect reduction in the shaft.关键词
炼铁/高炉/喷吹煤气/浓度分布/影响因素Key words
ironmaking/blast furnaces/gas injection/concentration distributions/influencing factors分类
冶金工业引用本文复制引用
刘锦周,薛庆国,佘雪峰,王静松..氧气高炉炉身喷吹煤气在炉内的分布[J].北京科技大学学报,2014,(6):817-823,7.基金项目
国家自然科学基金资助项目(51134008) （51134008）
国家重点基础研究发展规划资助项目(2012CB720400) （2012CB720400）
