Collect. Czech. Chem. Commun. 1987, 52, 1178-1185

The height of expansion in bubbling fluidized beds

Miloslav Hartman, Václav Veselý, Otakar Trnka and Karel Svoboda

Institute of Chemical Process Fundamentals, Czechoslovak Academy of Sciences, 165 02 Prague 6-Suchdol


A theory of bubble growth due to coalescence in gas fluidized beds was employed to predict the bed expansion. Using the semi-empirical correlation of bubble size by Mori and Wen, an equation for the height of expanded beds has been developed and verified by experiment. Predictions of the proposed formula were compared with the predictions of recent bed expansion correlations.