Maxwell-Stefan方程及其在多元相间传质中的应用  

Maxwell-Stefan Equation and Its Application in Multicomponent Interphase Mass Transfer

作　　者：王维德[1] 

机构地区：[1]华侨大学化工系

出　　处：《化学工程》2002年第4期8-12,共5页Chemical Engineering(China)

摘　　要：多元物系传质过程与二元物系传质过程有着本质的区别 ,由于组分间的交互作用 ,多元物系传质各组分传质效率不相等 ,其分布范围可在 -∞至 +∞之间 ,某些组分可能产生逆向传质、渗透传质、传质障碍等传质奇异现象 ,这些现象用传统的二元物系传质规律无法作出解释 ,必须用Maxwell Stefan方程进行描述。该文综述了Maxwell Stefan方程的由来、求解方法及其在多元相间传质中的应用。The mass transfer process of multicomponent system is completely different from that of a simple binary system. Due to the diffusion interactions between different components on the mass transfer process, the efficiencies of species in a multicomponent system are not the same, changing between -∞-∞.In some cases some species appear osmotic diffusion, reverse diffusion or diffusion barrier.The traditional Fick′s 1aw can not explain these phenomena, and it is necessary to explain them by Maxwell-Stefan equations, which can provide the most general and convenient approach for describing multicomponent mass transfer. A review is given to the derivation of Maxwell-Stefan equations, their solution and their application to interphase mass transfer in mu1ticomponent systems.

关 键 词：MAXWELL-STEFAN方程 多元物系 传质过程 扩散系数 

分 类 号：TQ021.4[化学工程]