Mass Transfer Enhancement of Propane Absorption into Dodecane-Water Emulsions  

作　　者：沈树华 马友光 刘玮莅 卢素敏 朱春英 

机构地区：[1]School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China

出　　处：《Chinese Journal of Chemical Engineering》2010年第2期217-222,共6页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China（20176036）

摘　　要：A one-dimensional unsteady heterogeneous parallel mass transfer(ODUHPMT) model was developed for the absorption enhancement of volatile organic compounds(VOC) by the dispersed droplets.An analytical solution for enhancement factor was obtained based on surface renewal theory and the Laplace domain transformation. The absorption rate of propane into water at different stirring speeds with the added micro dodecane droplets was investigated experimentally in a thermostatic stirred tank.The mass transfer flux across the gas-liquid interface and the enhancement factor were measured.The results showed that the dodecane has an obvious enhancement effect on propane absorption into water,the maximum enhancement factor reached 11.The enhancement factor increased with increasing dodecane volume fraction and decreased with increasing stirring speed.The experiment data agreed well with the model predictions and showed high prediction accuracy of ODUHPMT model.A one-dimensional unsteady heterogeneous parallel mass transfer（ODUHPMT） model was developed for the absorption enhancement of volatile organic compounds（VOC） by the dispersed droplets.An analytical solution for enhancement factor was obtained based on surface renewal theory and the Laplace domain transformation. The absorption rate of propane into water at different stirring speeds with the added micro dodecane droplets was investigated experimentally in a thermostatic stirred tank.The mass transfer flux across the gas-liquid interface and the enhancement factor were measured.The results showed that the dodecane has an obvious enhancement effect on propane absorption into water,the maximum enhancement factor reached 11.The enhancement factor increased with increasing dodecane volume fraction and decreased with increasing stirring speed.The experiment data agreed well with the model predictions and showed high prediction accuracy of ODUHPMT model.

关 键 词：enhancement factor mass transfer ABSORPTION droplets 

分 类 号：TQ921.7[轻工技术与工程—发酵工程] TQ450.62