单组分扩散过程中界面湍动对流结构的观察  

Observation of Interfacial Turbulence Structure in the Single Diffusion Process

作　　者：于艺红[1] 沙勇[2] 成弘[1] 刘春江[1] 余国琮[1] 

机构地区：[1]天津大学化学工程研究所,天津300072 [2]厦门大学化工系,福建厦门361005

出　　处：《高校化学工程学报》2003年第2期212-215,共4页Journal of Chemical Engineering of Chinese Universities

基　　金：国家自然科学基金资助项目(编号:20076032)

摘　　要：利用激光纹影仪从垂直和平行于界面两个方向对静止和流动乙醇吸收、解吸CO2的传质对流结构进行了观察,发现在液相主体中明显存在传质导致的液体对流现象,同时发现对流结构在液相流动方向取向具有优先性。研究界面对流对增大传质速率,探索微观传质机理和寻求强化传质途径具有理论和实际意义。Using laser schlieren device,convective structures at the interface in mass transfer process of absorption and desorption of CO2 by ethanol were observed in both parallel and vertical directions to the interface. It was found that obvious convection caused by mass transfer occurs in the main body of liquid phase and the interfacial convective structures follows the direction of liquid flow. The study of interfacial convection is interested in accelerating the mass transfer, the theoretical and practical area of studying microcosmic mass transfer mechanism and seeking for the route of enhancing the mass transfer process.

关 键 词：界面湍动 质量传递 对流结构 纹影仪 

分 类 号：O647.11[理学—物理化学] TQ028.15[理学—化学]