Hydrodynamics and mass transfer in agitated gas-liquid systems

V.M. Barabash

 Abstract

Design relationships for a quantitative evaluation of bubbles size inside an agitated vessel, the axial distribution of the gas hold-up and the flow rate of the gas entrained from the surface are obtained on the basis of the analysis of the physical laws governing the processes of formation and transport of elements of the dispersed phase. The method for analysis of the mass transfer process in agitated gas-liquid systems is developed with the laws of the turbulent flow near deformable and rigid surfaces taken into account along with the conclusions of the local isotropic turbulence theory. The operation of the conventional ring-shaped sparger was analyzed and its modified construction is proposed, which contributes to a higher intensity of mass transfer. The results of the theoretical analysis are compared with experimental data obtained in research work and in the published work as well.