Abstract: In order to analyze and forecast the wall erosion in a quench oil hydraulic cyclone, the liquidsolid two phase flow and erosion profile of the wall in a hydraulic cyclone was numerical simulated. The results show that the major eroded regions are the inner wall at 45°～135° azimuth of the gas inlet, the ring section under the inlet, the lower part of cone, and underflow pipe. Moreover, at the underflow pipe, the suspension was discharged rapidly from the outlet and lead to the erosion peak. Based on the simulation results, measure for improving the antierosion performance was put forward. It can provide reference for the longperiod safe operation of hydraulic cyclone.

Key words: Hydraulic cyclone, Erosion,     ,  Numerical simulation

摘要： 为了分析预测大型急冷油旋液分离器壁面磨损，采用计算流体力学软件Fluent对旋液分离器内液固两相流场及壁面的磨损情况进行了模拟计算。结果表明，旋液分离器壁面主要的磨损部位为：入口处筒体内壁45°～135°区间、入口下端的环形截面、锥体下部区域以及底流管。在底流管处，稠化的悬浮液从底流口快速排出，对壁面的磨损达到峰值。基于模拟结果，提出了通过改变硬件设施降低壁面磨损的措施，为生产实际应用中保证旋液分离器的安全长周期运行提供一定的参考。

关键词: 旋液分离器 , 壁面磨损 , 数值模拟