气液固三相旋流分离器内锥结构的数值模拟研究

Numerical simulation of inner cone structure of gas-liquid-solid three-phase cyclone separator

采用计算流体动力学(CFD)方法,对气液固三相旋流分离器的初始模型进行数值模拟,分析其内部流场分布,得出倒锥结构具有促进分离效果的作用。通过固定分离器的主直径与高度、入口尺寸、底流口直径、侧向出口尺寸、排液孔数量、排液孔尺寸、排液孔中心高度、溢流管直径、溢流管长度以及旋流腔长度,改变倒锥结构中的内锥直径与内锥高度,对模型进行优化,得到内锥直径为38mm、内锥高度为110mm时,三相旋流分离器的分离效果较好。

The Computational Fluid Dynamics(CFD)method is used to simulate the initial model of the gas-liquid-solid three-phase cyclone separator,and the internal flow field distribution is analyzed.It is concluded that the inverted cone structure has the effect of promoting separation.The model was optimized by fixing the main diameter and the height of separator,inlet size,underflow diameter,lateral outlet size,number of drain holes,the size and the center height of drain hole,the diameter and the length of overflow pipe and the length of swirl chamber,and changing the inner cone diameter and the inner cone height of the inverted cone structure.The results show that the separation effect of three-phase cyclone separator is better when the diameter of inner cone is 38 mm and the height of inner cone is 110 mm.