A STUDY ON FLOW CHARACTERISTICS IN A ROTATING SCREEN BLADE EXTRACTIONCOLUMN

Studies have been carried out on the axial dispersion in the continuou s phase and the hold-up of dispersed phase in a rotating screen-blade extraction column, by employing an axial dispersion model. Experiments on both single and two phase operations have been conducted with the plate spacing, the mesh size, the impeller speed (RPM), and the superf icial velocities as the system parameters. By regression analysis of e xperimental data, empirical equations correlating the dispersion coeff icients and the fractional hold-up of dispersed phase with the system parameters were obtained.