Gas-Phase Mixing in Bubble Columns

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Mikio Kawagoe²  Campbell W. Robinson³  Tsutao Otake¹ 

[1] Department of Industrial Chemistry, Chubu University;Department of Chemical Engineering, Nara National College of Technology;Department of Chemical Engineering, University of Waterloo

关键词: Mixing;    Bubble Column;    Reactor;    Residence Time Distribution;    Axial Dispersion Coefficient;   

DOI  :  10.1252/jcej.22.136

来源: Maruzen Company Ltd

【 摘 要 】

References(15)Cited-By(16)Residence time distributions of gas phase in bubble columns were obtained by excluding end effects from observed responses to pulse inputs of tracer, using Fourier transforms. Based on the behavior of the residence time distributions, a gas-phase mixing model was proposed in which bubble swarm was assumed to be composed of two bubble groups, one in the core (or central) region and the other in the annular (or peripheral) region of the column. As a result, it was found that about 80% of all the bubbles are rising in the core region and that gas-phase mixing is more intensive in the core region than in the annular region. Axial dispersion coefficients in each bubble group were correlated empirically.

【 授权许可】

Unknown