Necessary and Sufficient Conditions for Reactive Azeotropes in Multi-reaction Mixtures in Terms of Elemental Composition  

作　　者：林金清 李浩然 韩世钧 

机构地区：[1]ChemistryDepartment,ZhejiangUniversity,Hangzhou310027,China [2]CollegeofChemicalEngineering,HuaqiaoUniversity,Quanzhou362011,China

出　　处：《Chinese Journal of Chemical Engineering》2000年第4期361-365,共5页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China (No.29976035) and Zhejiang and Fujian Provincial Natural Science Foundation of China.

摘　　要：Necessary and sufficient conditions for azeotropy in reactive mixtures are derived in terms of elemental composition, which shows that in the space of elemental compositions, they take the same functional form as the conditions for azeotropy in non-reactive mixtures. The production of methyl tert-butyl ether (MTBE) is taken as an example. It is found that there are a 'pseudo' intermediate-boiling ternary reactive azeotrope at p = 101.325kPa and two 'real' ternary reactive azeotropes at p = 101.325 Pa. The introduced elemental compositions also reduce the dimensionality of the phase diagrams and provide a natural set of variables for visualization of phase behavior.Necessary and sufficient conditions for azeotropy in reactive mixtures axe derived in terms of elemental composition, which shows that in the space of elemental compositions, they take the same functional form as the conditions for azeotropy in non-reactive mixtures. The production of methyl tert-butyl ether (MTBE) is taken as an example. It is found that there are a 'pseudo' intermediate-boiling ternary reactive azeotrope at p=101.325 kPa and two 'real' ternary reactive azeotropes at p=101.325 Pa. The introduced elemental compositions also reduce the dimensionality of the phase diagrams and provide a natural set of variables for visualization of phase behavior.

关 键 词：reactive azeotropy necessary and sufficient condition multi-reactive mixture phase and chemical equilibrium 

分 类 号：TQ02[化学工程]