AXIAL DISPERSION OF LIQUID IN MOBILE-BED CONTACTING

Axial dispersion of liquid in Mobile-Bed Contacting (MBC) was investigated employing transient-response technique with impulse input of NaCI tracer. Experiments were performed in a 0.195 m ID column. Three different packing diameters (15, 19.5 and 32 mm) and three different static bed heights (0.1, 0.195 and 0.3 m) were used. Gas flow rate was varied between 3.02 and 4.05 kg/m²/s and liquid flow rate from 2.4 to 10.4 kg/m²/s.

Transfer function analysis of data yielded that Peclet number was practically independent of liquid and gas flow rates and static bed height but depended on packing size only. A simple correlation for Peclet number was developed