Dynamic analysis of the scale-up of fluidized beds

Journal article (2017)

Authors

M Tahmasebpoor University of Tabriz
R. Zarghami University of Tehran
R Sotudeh-Gharebagh University of Tehran
J.R. van Ommen ChemE/Product and Process Engineering - AS
N Mostoufi University of Tehran
Research Group
ChemE/Product and Process Engineering (AS) (TU Delft)
Entropy Scale-up Fluidized bed Pressure fluctuations Recurrence quantification analysis
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Published Date

2017

Language

English

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Faculty

Applied Sciences

Department

ChemE/Chemical Engineering

Research Group

ChemE/Product and Process Engineering

Abstract

A method is developed for hydrodynamics scale-up of gas-solid fluidized beds based on recurrence quantification analysis of nonlinear time series of pressure fluctuations. This method is an improvement of the previous method by including the entropy of pressure fluctuations to the list of scale-up parameters. Experiments were carried out at varying conditions, e. g., bed diameter (5, 9, 15, 40 and 80. cm ID), particle size (150, 300, 400 and 600. μm), bed height at aspect ratios (1, 1.5 and 2) and superficial gas velocities (ranging 0.1 to 1.7. m/s) to identify the main parameters that influence the dynamics and to develop a general interpretation of the analysis results. By investigation of the effect of operating parameters on entropy, a quantitative empirical correlation is proposed for including the entropy in the scale-up parameters. It was shown that this correlation improves the Glicksman's method for the scale-up of fluidized beds.