Zur Fluiddynamik und zum Stoffübergang newtonscher und nichtnewtonscher Gemische auf Siebböden

Fluiddynamics and Mass Transfer of Newtonian and non-Newtonian Mixtures on Sieve Trays Highly viscous media are processed in a number of industries such as the chemical, pharmaceutical, petrochemical and food industries, whereby a great number of the used systems has an non-Newtonian behaviour. To improve the knowledge of mass transfer processes in Newtonian and non-Newtonian mixtures systematic experiments for fluiddynamics and mass transfer were carried out on various sieve trays. The realised results show that the separation performance of tray columns can be increased significantly by a suitable choice of operating conditions and sievetray lay-out. This paper summarizes results on the absorption of oxygene into water and in non-Newtonian liquids like carboxyl-methylcelluose/water and polyacrylamide/water. In parallel to the experimental measurements new correlations for the mass transfer of tray columns operating with average and high-viscous media were developed.