Gas-liquid mass transfer in an airlift reactor - analytical solution and experimental confirmation

被引：19
|
作者：
Dhaouadi, H
Poncin, S
Midoux, N
Wild, G
机构：
[1] ENSIC, CNRS, Lab Sci Genie Chim, F-54001 Nancy, France
[2] Fac Sci Monastir, Dept Chim, Monastir, Tunisia
来源：
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION | 2001年 / 40卷 / 02期
关键词：
airlift; mass transfer; analytical solution;
D O I：
10.1016/S0255-2701(00)00132-X
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Gas-liquid mass transfer behavior in an external loop airlift reactor is investigated. The riser and the downcomer of 6 m height have a diameter of 0.15 and 0.08 m, respectively. The classical 'gassing out' dynamic method is used to obtain the evolution with time of dissolved oxygen concentration profiles. An analytical description of the concentration profiles with time following the switch in the inlet gas concentration is presented and allows the evaluation of the gas-liquid mass transfer coefficient for the different gas velocities used. The comparison between the values of k(L)a determined from this simplified model and those obtained in the same reactor from a more complete and sophisticated model shows a good agreement. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：129 / 133
页数：5
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