摘要
以双锥重介质旋流器为研究对象,通过计算流体力学数值模拟,分析不同锥角组合旋流器内流体的速度分布规律,进而找到最适合分选高密度油页岩的锥角组合。研究结果表明:不同锥角组合旋流器的内部流场具有相似的分布规律,其中当上锥角为70°、下锥角为30°时流体切向速度最大,零速包络面位置最靠近器壁,旋流器的实际分选密度最高,因此最终选择锥角组合为70°~30°。
The object of the study is a double-cone heavy-medium cyclone which has an upper and a lower conical parts.It is intended to analyze,through computional fluid mechanics numerical simulation,the pattern of velocity distribution of the fluid in the cyclone at different cone-angle combinations,so as to determine their optimum combination for separation of high-density oil shale.Result of study shows that:the internal flow field of the cyclone exhibits a similar distribution pattern at different cone-angle combinations;with a cone angle of 70°of the upper conical part and a cone angle of 30°of the lower conical part,the tangential velocity of the fluid tends to reach its peak value;and when the position of the zero-velocity envelop comes nearest the wall of the cyclone,a highest actual separating density can be expected.Hence,the cone-angle combination of 70°and 30°is finally selected.
作者
单超
SHAN Chao(CCTEG Energy Investment Co.Ltd,Beijing 100013,China)
出处
《选煤技术》
CAS
2019年第2期25-28,共4页
Coal Preparation Technology
关键词
重介质旋流器
油页岩
流体力学
数值模拟
锥角
H. M. cyclone
oil shale
fluid mechanics
numerical simulation
cone angle
