Experimental dynamic evaluation of three-phase reactors

Brazilian Journal of Chemical Engineering

F. G. Sales²  L. C. A. Maranhão¹  J. A. F. R. Pereira¹  C. A. M. Abreu¹ 

[1] ,Universidade Federal do Ceará Centro de Tecnologia Departamento de Engenharia Química,Brazil

关键词: Dynamic evaluation;    Fluidized-bed;    Trickle-bed;    Residence time distribution;    Tracers;   

DOI  :  10.1590/S0104-66322005000300012

来源: SciELO

【 摘 要 】

The hydrodynamic parameters were determined for two different three-phase systems (fluidized-bed and trickle-bed) through the experimental evaluation of the dynamic residence time distribution in the gas or liquid phase. For different fluid phase flow rates the fluidized-bed system was operated with a tracer in the gas phase and in the trickle-bed with a tracer in the liquid phase. The analysis of the processes was achieved through the application of different models representing the dynamic behavior of tracers present in the gas and liquid phases with a simulation of experimental operations of the three-phase reactors. The transfer functions developed for the two systems made it possible to estimate the hydrodynamic parameters providing the gas holdup (2.22 x 10-2 to 8.42 x 10-2) and the gas phase Peclet number (54.18 to 41.20) for the fluidized-bed and the liquid holdup (0.16 to 0.25), the liquid phase Peclet number (20.37 to 4.52) and wetting efficiency (0.34 to 0.56) for the trickle-bed.

【 授权许可】

CC BY   
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