Figure 11.13. Schematic representation of oxygen transport processes.
The correlations for kta used for the well-mixed region (subscript m) were
for the coalescing case and
for the non-coalescing case, respectively. The kja value in the bubble region (subscript b) was given by
The top bubble region was assumed to start just above the top impeller in both cases. For the non-
coalescing case, the volume of the well mixed region, Vm
, was assumed to be
Vm - n d ,d ,2^
where n was the number of stirrers (=2), dw
was the impeller blade width and dt was the tank diameter.
The liquid flow between the compartments was estimated from the pumping capacity, vr.mr. which was
02 N Ad]N