微压内循环反应器的CFD模拟与试验研究

The CFD Numerical Simulation and Experimental Study on Micro-pressure Internal Circulation Reactor

针对微压内循环反应器0.8m×0.1m×1.2m试验模型装置的内部气液两相流进行计算流体动力学(CFD)二维模拟和试验研究,结果表明:模拟结果与试验结果相符,总体的流速误差<±20%,中间区域的流速误差<±10%,检验了CFD模型。通过流速分布规律研究,从流体动力学角度初步分析了该反应器分区垂向循环流动特征,垂向循环流促进反应器底部产生较高的水平流速,从而有效地减小死区,提高反应器的容积利用率。

In this paper,gas-liquid two phase flow in micro-pressure internal circulation reactor with length ×width×height of 0.8m×0.1m×1.2mis studied by CFD dimensional and numerical simulation and experiments.The results show that numerical simulation results are coincident with results of the experiment,the velocity errors in the whole area of the veactor are less than ±20%,and the velocity errors in central area are less than±10%.By studying the rules of velocity distribution in the reactor,the characteristics of partition vertical circulation flow is analyzed in the hydrodynamics point of view.At the bottom of the reactor,the vertical circulation flow can promote to produce a higher flow velocity,so as to effectively reduce the dead zones,and improve the utilization rate of the reactor volume.