Correlations for the Prediction of NTU and Mass Transfer Coefficient for a VPE

0375231 - ÚCHP 2012 ZA eng J - Článek v odborném periodiku
Rathilal, S. - Čárský, M. - Heyberger, Aleš - Rousková, Milena
Correlations for the Prediction of NTU and Mass Transfer Coefficient for a VPE.
South African Journal of Chemical Engineering. Roč. 16, č. 1 (2011), s. 30-49. ISSN 1026-9185
Výzkumný záměr: CEZ:AV0Z40720504
Klíčová slova: vibrating plate extractor * ntu * hets
Kód oboru RIV: CI - Průmyslová chemie a chemické inženýrství

This paper aims at developing appropriate correlations for the prediction of NTU/HETS and the mass transfer coefficient, kox for the vibrating plate column (VPE) based on the agitation level of the plates (af – the product of frequency and amplitude of the plate motion), the plate spacing and the flow rates. The system chosen was the acetone-toluene-water system with the acetone in toluene forming the feed that is dispersed in the column as it moved upward while the water moved as a continuous phase down the column. Experiments were conducted to evaluate the hydrodynamics of the droplets moving up the column (in terms of drop sizes, size distribution and dispersed phase holdup) and to evaluate the mass transfer that occurs (in order to evaluate NTU, HTU and kox) while varying the agitation levels and spacing of the plates in the column. Successful correlations were developed using some of the experimental data and these correlations were verified with additional data.
Trvalý link: http://hdl.handle.net/11104/0207947