Publication Date:
2014-01-31
Description:
A computational fluid dynamics model was developed to investigate the hydrodynamic characteristics of a novel orthogonal fixed-valve tray, which offers a larger effective contact perimeter under the same orifice area than its previously reported counterparts. The liquid-gas phases were simulated in the Eulerian framework, with the interphase momentum transfer source term based on the experimentally obtained liquid hold-up correlation. The simulation results were consistent with the experimental data. In addition, the gas hold-up profile of this new design was compared with its triangular cousin under the conditions of a typical run, showing that the former has a higher froth height, which indicated better interphase contact on the tray. The hydrodynamics of a fixed-valve tray has great influence on the liquid-gas interaction. The characteristics of an orthogonal fixed-valve tray were modelled using computational fluid dynamics and an Eulerian framework. Comparison of the gas holdup profiles of the orthogonal and the triangular fixed-valve tray indicated better interphase contact on the tray for the cross-orthogonal design.
Print ISSN:
0930-7516
Electronic ISSN:
1521-4125
Topics:
Chemistry and Pharmacology
,
Process Engineering, Biotechnology, Nutrition Technology
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