Dynamic analysis of the scale-up of fluidized beds |
| |
| Authors: | M Tahmasebpoor R Zarghami R Sotudeh-Gharebagh JR van Ommen N Mostoufi |
| |
| Affiliation: | 1. Department of Chemical & Petroleum Engineering, University of Tabriz, P.O. Box 5166616471, Tabriz, Iran;2. Multiphase Research Systems Lab., School of Chemical Engineering, College of Engineering, University of Tehran, P.O. Box 11155/4563, Tehran, Iran;3. Delft University of Technology, Department of Chemical Engineering, Van der Maasweg 9, 2629 HZ Delft, The Netherlands |
| |
| 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. |
| |
| Keywords: | Fluidized bed Scale-up Recurrence quantification analysis Pressure fluctuations Entropy |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
