| A conical shaped industrial bubbling fluidized bed reactor containing a binary mixture was scaled down using scaling laws developed by Horio et al., and mixing profiles determined for the scale model. Mixing has been shown to be dependent on particle density, size and superficial gas velocity. Density has been shown to be more prevalent than particle size in determining which of the two particles will behave as jetsam. Lowering superficial gas velocity in a region close to the minimum fluidization velocity of a particle behaving as flotsam, has been shown to cause this particle behave as jetsam. The system was mathematically modeled using a rate based mass balance method developed by Gibilaro and Rowe, and experimental data have adhered to the general trends predicted by this model, although this model does not predict a change in roles of jetsam and flotsam with a lower superficial gas velocity. |
