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拓扑法(以下简称TTM法)将溶液中组分分子看作拓扑图形加以处理,已成功地用于研究混合热混合物粘度等方面。1983年Aucejo等将TTM法用于关联、预测气液平衡,对醇——烷等物系得到成功。为了检验TTM法的适用性。我们做了如下一些工作:用TTM法的十个模型关联了三个物系,进行分模型的筛选;关联了若干恒压、恒温二元系的气液平衡;进行了用某温度下的参数预测其它温度下气液平衡的研究,以及由已知二元数据预测由组分同系物组成的其它二元气液平衡的研究。所处理的物系主要是含醇、含丙酮的物系。结果表明:就所研究的物系来说,用TTM法关联结果一般与用Margules方程相近,比用UNIQUAC方程、Wilson方程差,但用TTM法计算简单些,预测相邻温度下的气液平衡是可行的,而预测同系物组成的二元系没有成功,需进一步研究。
Topological method (hereinafter referred to as TTM method) will be treated as the topological graphics of the solution molecules, has been successfully used to study the viscosity of the mixture and other aspects of the hot mixture. In 1983, Aucejo et al. Used the TTM method for correlation, predicting the gas-liquid equilibrium and succeeding in the alcohol-alkane system. In order to test the applicability of TTM method. We did some work as follows: Three models were linked with TTM method to screen the sub-models; some gas-liquid equilibriums with constant pressure and constant temperature were used; Studies to predict vapor-liquid equilibrium at other temperatures, and other binary gas-liquid equilibrium studies that predict the composition of component homologs from known binary data. The treatment of the main system is alcohol, acetone-containing system. The results show that the correlation results of TTM method are generally similar to that of Margules equation, but worse than that of UNIQUAC equation and Wilson equation. However, the TTM method is simple and the prediction of gas-liquid equilibrium at adjacent temperatures Is feasible, and the binary system of predicted homologues is unsuccessful and needs further study.