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Abstract: A new discrete model was developed for the design and analysis of catalytic trickle bed reactors operating in the low interaction regime based on the local structure of packed beds. By detailed comparisons of model predictions to experimental data the performance of the new model is demonstrated. By means of this model the steady-state behavior of trickle bed reactors can be studied in terms of operating conditions, physical properties of all three phases, transport parameters and isothermal reaction kinetics on a particle as well as on a reactor scale. [Copyright &y& Elsevier]

Abstract: A discrete 3D model has been developed for the prediction of static liquid holdup in cylindrical packed beds of spheres incorporating the local structural properties of the packing. The model predictions have been compared to experimental data covering a wide range of relevant physical properties of liquid–solid systems for aspect ratios between 3.5 and 25. A notably good agreement between prediction and experiments is observed. [ABSTRACT FROM AUTHOR]

In order to represent radial dispersion phenomena in packed beds a three-dimensional network model is proposed based on characteristic structural properties of the packing. As shown by a detailed sequential experimental study, the model is able to predict radial Peclet numbers for the turbulent regime in good agreement with experimental data without adjusting any model parameter. [Copyright &y& Elsevier]