ECCE 7 - 7th European Congress of Chemical Engineering, CHISA 2010 - 19th International Congress of Chemical and Process Engineering (CD-ROM of Full Texts)This paper presents an on-line method to identify automatically the single bubbles
(isolated bubbles without influence of surrounded bubbles) in multiphase reactors. Based on
image analysis technique (IA), the method combines the information given by IA with the
Discriminant factorial analysis leading to results that allow the identification of single bubbles
and the study of bubble population complexity. By this way, it is possible to characterize the
single bubbles on different conditions and to understand their influence on mass transfer.
Agreement between automated and manual classification, measured in terms of a performance
index, is 90% on average. Further, it describes the application of such methodology to the
study of the influence of bubble characteristics (size, shape, bubble population complexity,
etc) on the individual parameters of volumetric liquid side mass transfer coefficient, kLa. The
experiments were done at different temperatures (25-35ºC) and superficial gas velocities (up
to 14 mm/s) in a bubble column.info:eu-repo/semantics/publishedVersio
