
116 Foam Fractionation: Principles and Process Design
and empirical correlations for designing perforated spargers for bubble
column reactors but the same principles should apply to foam fractionation
as well because the liquid pool of a foam fractionation column is essentially
a bubble column. The major challenge in designing this type of sparger is
to ensure that the gas phase is evenly distributed across the cross-section
of the column, and to prevent weeping of liquid. To overcome the poten-
tial for liquid weeping and blocking of pores when this type of sparger is
used, the gas should be turned on before liquid is charged to the column, ...