Abstract: Computational Fluid Dynamics (CFD) was used to improve liquid flow on distillation tray，and the factors affecting liquid flow were analyzed，such as liquid flow intensity and the ratio of weir to diameter. Based on these results，two methods were studied and simulation results showed that the placement of suitable inlet weir with unequal height or guide plates could reduce retrograde flow effectively to achieve uniform liquid flow on the whole tray.

摘要： 应用计算机对过程的模拟(仿真)研究是过程系统工程（process systems engineering，简称PSE）的重要组成部分，本文应用计算流体力学（computational fluid dynamics,简称CFD）模拟研究了液流强度和堰径比对精馏塔板液流状况的影响，并且模拟计算了改进塔板液流状况的两种方案：设置不等高入口堰和设置圆弧型的导流板，从模拟结果可以看出，以上两种方案都能够很好的达到优化塔板液流状况的目的。