Collect. Czech. Chem. Commun. 1986, 51, 801-808

Polydisperse model of the VPE extractor hydrodynamics

Helena Sovová

Institute of Chemical Process Fundamentals, Czechoslovak Academy of Sciences, 165 02 Prague 6 - Suchdol


A computer simulation model of the dispersed phase holdup in the vibrating-plate extractor was developed. Drop transport, breakage and coalescence equation were solved simultaneously, the stage being divided in the internal part and in the dense-packed layer of dispersion at the plate. The verified simulator can be used to predict and to analyse both steady state holdup and its dynamics and it can help to design a VPE extractor or a pulsed sieve-plate extractor. Holdup measured in a VPE column with toluene dispersed in water without mass transfer was simulated by the model with a standard deviation 6% rel. in the whole range from the mixer-settler region to the emulsion region.