干熄焦炉内焦炭下降运动的实验研究

采用示踪法和数字摄像设备,研究了焦炭在干熄炉冷态模型内的下降行为,分别针对5种不同的布料及下料方式,得到了3种风帽条件下焦炭下降的特点和规律.实验结果表明:就焦炭总体下降的均匀性而言,椭圆风帽优于高风帽和低风帽,水平料面布料方式优于料峰布料方式,两侧加料(双料峰)方式优于中心加料(单料峰)方式.是否连续下料,并不显著影响焦炭下降的运动轨迹和平均速度的分布趋势.风帽对焦炭下降的影响是区域性的,当料层高度足够时,各种下降条件下风帽的选择不会使焦炭的下降均匀性及顺畅性产生本质的变化.

Experimental Study of Coke Descent in CDQ Cooling Chamber

The coke descent in the cold model of CDQ cooling chamber was studied by means of tracing method with digital camera. For three different blast-cups, the law of coke descent was studied under five conditions of coke charging. The results showed that,elliptical blast-cup cross is better than low or high located circular blast-cups~ coke charge pattern with flat top surface is preferable to that with peak-valley surface, and double-peak pattern is superior to one-peak one for uniform distribution of coke. Trajectory and average velocity distribution of descending coke are almost independent of whether coke is discharged continuously or not. The blast-cups have local effects on the coke descent and have little effects on whether the cokes flow smoothly or not in case that coke bed has enough height.