Hydrodynamics and Mass Transfer of Oily Micro-emulsions in An External Loop Airlift Reactor

被引：8

作者：

Fakhari, Mona Ebrahimi ^{[1
]}

Moraveji, Mostafa Keshavarz ^{[2
]}

Davarnejad, Reza ^{[1
]}

机构：

[1] Arak Univ, Fac Engn, Dept Chem Engn, Arak 3815688349, Iran

[2] Amirkabir Univ Technol, Tehran Polytech, Dept Chem Engn, Tehran 158754413, Iran

来源：

CHINESE JOURNAL OF CHEMICAL ENGINEERING | 2014年 / 22卷 / 03期

关键词：

external loop airlift reactor; hydrodynamics; micro-emulsions; oxygen transfer; TRANSFER COEFFICIENT; OXYGEN-TRANSFER; LIQUID VELOCITY; BUBBLE-COLUMNS; GAS HOLDUP; BIOREACTOR; TUBE; FERMENTERS; BEHAVIOR; DESIGN;

D O I：

10.1016/S1004-9541(14)60050-1

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This study reports an experimental investigation on hydrodynamics and mass transfer characteristics in a 15.6x10(-3) m(3) external loop airlift reactor for oil-in-water micro-emulsions with oil to water volume ratio (phi) ranging from 3% to 7% (by volume). For comparative purposes, experiments were also carried out with water. Increase in phi of micro-emulsion systems results in an increment in the gas holdup and a decrease in the volumetric gas-liquid oxygen transfer coefficient and liquid circulation velocity, attributed to the escalation in the viscosity of micro-emulsions. The gas holdup and volumetric mass transfer coefficient for micro-emulsion systems are significantly higher than that of water system. Two correlations are developed to predict the gas holdup and oxygen transfer coefficient.

引用

页码：267 / 273

页数：7

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