关键词: 旋流器, 环缝内衬, 计算流体力学, 数值模拟, 磨损

Abstract: The cyclones have been widely used in various industrial fields because of the advantages of simple structure,convenient installation and operation. Since they have been used till now,the problem of attrition has not been solved. Although there are a lot of researches on the wear-resisting materials,the cyclones attrition problems still exist. In order to improve the wear resistance of solid-liquid cyclones,prolong the service life of cyclone,a wear-resisting cyclone with the ring seam liner was proposed. Based on computational fluid dynamics (CFD),the attrition of the cyclone was simulated using the Reynolds model and discrete phase model in ANSYS software. The simulation values of the cyclone with ring seam liner and ordinary cyclone were compared. Finally,the accuracy of the simulation was verified by wearing experiments. The results showed that the main attrition located on the entrance,connection area of the cone and cylinder,and near the underflow port of the cyclone. The rate of erosion on the surface of the cyclone wall is reduced greatly due to existence of ring seam. At the same time,the attrition on the ring seam liner has also been reduced because the concentration of the slurry is getting lower due to the relative larger particles going to the range between the ring and the cyclone wall.

Key words: cyclone, ring seam liner, computational fluid dynamics (CFD), numerical simulation, attrition