Three-dimensional gas-liquid flow simulation of a rotating packed bed
using Eulerian porous media models
Abstract
The rotating packed bed (RPB) is a typical equipment in chemical process
intensification technology due to its excellent mass transfer
performance. In this paper,three different single-phase wire screen
packing pressure drop models coupled with the interfacial area model
were used to construct resistance calculation methods for porous media,
respectively. The results show that simulation deviations of the liquid
holdup and the pressure drop of the m-K model range from 0.92% to
27.61% and 1.63% to 34.59%, respectively. The m-K model has the
highest prediction accuracy at N=500~1500 rpm. At
N=2000~2500 rpm, the B model has the highest prediction
accuracy. The higher the viscosity of the liquid, the more uniform the
axial liquid distribution in the packing, and the longer the liquid mean
residence time. The impact of different nozzle designs on liquid
distribution has been investigated using a new method based on
user-defined functions (UDFs).