超额吉布斯自由能-状态方程模型的研究进展进展与述评.PDF

304 CHEMICAL INDUSTRY AND ENGINEERING PROGRESS 2014 33 2 - 266042 - - E HV G -EoS WS MHV1 MHV2 LCVM GE-EoS 3 GE-EoS GE-EoS O 642.42 A 100066132014 DOI 10.3969/j.issn.1000-6613.2014.02.006 E Research progress of G -EOS models LAN Xue XIA Li XIANG Shuguang Hi-Tech Institute for Petroleum and Chemical IndustryQingdao University of Science and TechnologyQingdao 266042ShandongChina E Abstract The G -EOS model is a new idea to calculate and predict the phase equilibria with respect to E the traditional methods of equation of states and activity coefficient models. The G -EOS models are classified based on different reference states. This paper gives a summary of advantages and disadvantages of the classical models. The Huron-Vidal mixing rulewhich is the first GE-EOS model needs to refit the parameters of activity coefficient models. The Wong−Sandler mixing rule introduces the second virial coefficientand has a good theoretical basis. The MHV1 and MHV2 mixing rules can use existing parameters of activity coefficient models directly. The LCVM type mixing rules eliminate the difference of combinatorial terms between the equation of state and activity coefficient modelso that they have excellent performance to predict phase equilibria of asymmetric system. There are three methods to improve the GE-EOS modelswhich a