【摘要】 <正> 为了进行石油馏份的高压高温汽-液平衡计算,我们对两种类型的汽-液平衡模型作了考察。其一是所谓的混合模型(mixed-model tyPe correlation)—Chao—Seader(C—S)模型以及由它所衍生的Grayson-Streed(G—S)关联,它们的应用及分析载在我们前更多还原

【Abstract】 The application of various VLE models to petroleum fractions was investigated.It is concluded that BWRS equation of state and Ж-П empirical correlation are hardly suitable to high pressure, high temperature petroleum fraction VLE predictions, Chao-Seader model has an application range quite restricted, while Grayson-Streed correlation has calculation accuracy not high enough. The authors propose certain modifications to the mixed-model type VLE correlation The checked computations verify that for petroleum fraction the modified model has a much broader application range than that of C-S correlation, a higher accuracy than that of G-S correlation.更多还原