Abstract
A general model is developed to determine the distribution function of solid particles in a fluidized bed reactor. Two consumption mass rates, the chemical reaction rate and the superficial abrasion rate, are considered, assuming that the reaction is described by the unreacted core model. Solid population balance relating the feed, overflow and elutriation to the physio-chemical changes of the particles in the bed are carried out, assuming that abraded solids are immediately elutriated. The results of Levenspiel et al. (8) and those of Chen and Saxena (9) are obtained as a particular case. The model has been developed for a noncatalytic solid-gas reaction, particularly for limestone or dolomite sulphuring and coal combustion, but it may also be applied to any catalytic reaction.
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