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Holdup dynamics of a single stage gas‐solid fluidized bed adsorber
Author(s) -
Papadatos K.,
Svrcek W. Y.,
Bergougnou M. A.
Publication year - 1975
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450530616
Subject(s) - weir , fluidized bed , volumetric flow rate , chemistry , mechanics , particle (ecology) , thermodynamics , materials science , analytical chemistry (journal) , chromatography , physics , geology , cartography , geography , oceanography
The dynamics of the tray solids holdup for a single stage gas‐solid fluidized bed adsorber with a downcomer was studied. The method chosen was based on a material balance of the form \documentclass{article}\pagestyle{empty}\begin{document}$ L_i - L = \frac{{dH}}{{dt}} $\end{document} and an experimental relationship of the holdup H to the solids flowrate L . When the column to weir diameter ratio was 4.4 and 8.8 this relationship was of the linear form H = H s + τ L implying first order dynamics with time constant equal to τ. The time constant was not affected by the superficial gas velocity but it was shown to be a linear function of the weir height. The weir diameter and the particle density of the solids also showed an effect. Specifically, τ increased with the particle density and with decreasing weir diameter. When the column to weir diameter ratio was increased to 13.5 the holdup to solids flowrate relationship was non‐linear.