Computational Fluid Dynamic As A Feature To
Understand The Heat And Mass Transfer In A
Vacuum Tower
Author(s)
K. Ropelato, A. V. Castro, W. O. Geraldelli & M. Mori
Abstract
The understanding of fluid dynamic phenomena in industrial equipment is
extremely important for new projects and their optimization. Distillation
columns have been used for centuries. Since then many advances have been
achieved. The present study shows a methodology to study the heat and mass
transfer in empty sections of distillation columns considering the Eulerian-
Lagrangian approach. A multiphase model is applied to the vacuum tower, with
the vapor-liquid flow being modeled with a Eulerian-Lagrangian approach. The
Computational Fluid Dynamic (CFD) technique is adopted as the tool to predict
vacuum tower dynamics. The CFD results were validated with real operation
behaviour. An ideal multicomponent equilibrium model is adopted to represent
the thermodynamics in the heat and mass transfer processes. The characteristic
time scales are used in the classification and the understanding of the dominant
mechanisms in gas-liquid suspensions. This methodology is general, and
therefore can be applicable to any turbulent gas-liquid flow. A discussion on the
validity of the models is given, as well as an application to distillation vacuum
towers.
Keywords: CFD, thermodynamic equilibrium, multiphase, Lagrangian, spray.
Keywords
CFD, thermodynamic equilibrium, multiphase, Lagrangian, spray
Related Book
Other papers in this volume
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