Measuring and modelling lateral solid mixing in a three‐dimensional batch gas—solid fluidized bed reactor

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<jats:title>Abstract</jats:title><jats:p>A 0.27 m diameter fluidized bed reactor has been designed to allow experimental measurement of the axial and radial mixing behaviour of the solids.</jats:p><jats:p>A unique method has been developed which permits the continuous determination of solid tracer concentration with time at different radial and axial positions within the fluidized bed.</jats:p><jats:p>Solids mixing has been described by a model in which vertical mixing is instantaneous and lateral mixing occurs by dispersion.</jats:p><jats:p>The lateral solids dispersion coefficients have been evaluated at various operating conditions from the experimental results of tracer concentration versus time. Based on the results, a modification of an existing correlation is proposed.</jats:p>

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