摘要
利用开发的红外透射法粉体浓度计算机测定系统,在高炉氧煤喷吹气-固两相流动模拟装置上测定了氧煤枪的煤粉浓度场。结果表明,在直吹管内氧煤枪出口前端截面附近,煤粉浓度呈不对称分布状态。在射流流动方向所对应的半径一侧,煤粉浓度较大,但通过调节枪位可以改善这种状况。直吹管内气-固两相的掺混甚为剧烈,使得在氧煤枪出口前端轴向距离为2.5倍,直吹管直径的截面上气-固两相混合均匀。
The concentration distribution of pulverized coal in blowpipe of blast furnace was measured in an isothermal two-phase model by means of a computer measuring system based on infrared transmission. The results show that concentration near the exit of oxygen-coal lance is distributed unsymetrically and that the concentration along the direction of the gas-solid jet is much higher. The concentration distributions in the distance about 2.5 times diameter of blowpipe from the exit of the lance tend to be uniform due to the mixing of gas and solid phase rapidly in blowpipe.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
1993年第5期437-441,共5页
Journal of University of Science and Technology Beijing
基金
国家"八五"重点科技攻关项目 85-501-04-01
关键词
高炉
粉煤喷吹
氧煤枪
煤粉浓度场
blast furnaces, coal powder injection, concentration distribution / gas-solid folw
