Heat and Mass Transfer of a Co2 Binary Mixture: An Analytical Approach

Abstract

In this paper, an analytical solution for describing heat and mass transfer between a droplet of organic solvent and a compressed antisolvent taking into consideration the viscous energy dissipation and heat and mass transfer between the surface and the droplet by convection is presented. We assume that the solvent and the antisolvent are fully miscible and have the same temperature. We also assume both the initial temperature of the mixture and the initial carbon dioxide concentration depends on the space variable. The governing equations formulated based on the conservation of total mass, chemical species, momentum and energy were solved analytically using polynomial approximation method. The results obtained are presented graphically and discussed. The results revealed the effects of operating parameters on droplet lifetime. This results might be used for interpretation or experiments planning of the more complex real supercritical antisolvent process.