出版社：Polish Society of Ecological Engineering (PTIE)
摘要：The goals of this work is first, to simulate the liquid flow distribution in a large diameter (1.2 m) packed column with a high performance random packing RMSR 70-5 (layer height up to 3 m), by a dispersion model.Second one is to find and estimate the important model parameters and flow maldistribution factor, using experimental data and two different optimization approaches.A three-parameter dispersion model for prediction of radial liquid distribution and two different approaches to determine some of the model parameters from experimental data are used.In parallel, a two-parameter optimization procedure for model parameters’ identification is performed based on the minimum of residual variance between model and experimental liquid velocities over a column cross-section.The simulated and experimental flow maldistribution is estimated by an integral estimation –a maldistribution factor.The comparison between model and experimental liquid distribution and respective maldistribution factors at packing heights H=1m and H=2.5m for liquid load 16.6.10-3 m3/m2.s shows very good agreement, even for a high packing layer.In conclusion, the presented model predictions and estimations about packing RSRM 70-5 characteristics and behaviour will complement the information about its efficiency and operation in industrial processes.
