Dispersion and Mass Transfer Coefficients in Fluidized Beds

“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.