This study covers three Geldart groups, and includes state-of-the-art experimental measurements and first-principles prediction The authors solved a longstanding problem in fluidization, namely extremely low Sherwood number of fine particles in fluidized beds The authors showed that the well-known core-annulus profile reverses in slugging fluidization of Geldart D particles due to particle inertia effects This new finding is a robust and important one since core-annulus behavior is not desired These contributions to the field of particle technology are of high impact, and expected to be of lasting influence -Christine Hrenya, Professor of Chemical and Biological Engineering, University of Colorado at Boulder. The authors have shown that we can eliminate the core-annular regime in risers By directly computing the mass transfer coefficients, the need to include empirical parameters could be eliminated to obtain more accurate conversion rates -Reza Mostofi, Ph.D., UOP, A Honeywell Company.
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