期刊
CATALYSIS TODAY
卷 109, 期 1-4, 页码 205-213出版社
ELSEVIER
DOI: 10.1016/j.cattod.2005.08.019
关键词
hydrodynamics; ebullated-bed; pseudo-fluid; flow regime; minimum fluidization
Experiments were performed to study the hydrodynamic characteristics of ebullate-bed systems operated under conditions of high pressure and temperature. The effects of these variables on bed porosity and the liquid minimum fluidization velocity were determined and a correlation has been proposed as a criteria for determining flow regime transitions between the dispersed and coalesced bubble flow regimes. The bed porosity has been described with the pseudo-fluid model. The minimum fluidization velocity data were contrasted with predictions from empirical correlations reported in the literature. (c) 2005 Elsevier B.V. All rights reserved.
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