Hydrodynamics and mass transfer of oil-water micro-emulsion in a three phase internal airlift reactor
- 作者：Mostafa Keshavarz Moraveji ; m-moraveji@araku.ac.ir ; Mahboubeh Jafarkhani ; Baharak Sajjadi ; Reza Davarnejad
- 关键词：Airlift reactor ; Gas hold-up ; Liquid circulation ; Gas&ndash ; liquid mass transfer
- 刊名：Fuel
- 出版年：2012
- 期刊代码：33_00162361
- 类别：ce
- 出版时间：July, 2012
- 卷：97
- 期：Complete
- 页码：197-201
- 文件大小：672 K
摘要
In this article, the impacts of liquid properties, loading of solid phase and operating conditions on the hydrodynamic and mass transfer coefficient in a split-cylindrical airlift reactor sparged by air were investigated. The various oil-in-water micro-emulsion systems containing light naphtha, heavy naphtha, kerosene and diesel were used as the liquid phase with oil concentrations of 5%and the solid phase with the loading of 0, 0.25 and 0.5 wt.%. The experimental results showed that a micro-emulsion with the lowest density, viscosity and surface tension had maximum mass transfer and gas hold-up and minimum liquid circulation velocity. The gas hold-up and mass transfer decreased and liquid circulation velocity increased by solid particles addition. Further, solid loading enhancement had a dramatic effect on the mentioned parameters. Moreover, a proper correlation based on dimensionless numbers was used to predict mass transfer in this process. A very good agreement was observed between the correlated data and the experimental ones.