Abstract
Tracer particle distributions produced after a single bubble passage through a 0.19 m i. d. gasfluidised bed were successfully measured and analysed, together with bubble characteristics, in order to determine the solid exchange coefficient between the bubble wake and the surrounding emulsion phase. Experimental values of the coefficient obtained decreased with increasing bubble diameters for a range of 0.02 to 0.09 m which could quite reasonably be explained by the simple model proposed in our previous paper.
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