化工学报2017，Vol.68Issue(1)：1-7,7.DOI:10.11949/j.issn.0438-1157.20161302
汽液相平衡中无模型法的计算及应用
Calculation and application of model-free methods in vapor-liquid phase equilibrium
摘要
Abstract
Calculation of vapor-liquid phase equilibrium was the foundation for development and design optimization of chemical processes. Focal point of the calculation was to determine relationship between four variables of temperature T, pressure p, liquid phase composition x and vapor phase composition y in any vapor-liquid phase equilibrium system. Among these four variables, it was difficult to accurately measure vapor phase composition y, especially at low vapor concentration. Therefore, y was generally calculated by thermodynamic methods after experimental determination of p, T and x. Such methods could be divided into model and model-free methods, which model-free methods got academic attractions as a result of no need to consider application limitations of various activity coefficient models. Through analysis of principles of model-free methods, recent progress with an emphasis on applicable system, convergence rate and calculation accuracy was summarized and compared from the viewpoint of direct and indirect technique. The application of several common methods was discussed and the future research of model-free methods was forecasted.关键词
相平衡/组成/热力学/无模型法/预测Key words
phase equilibrium/composition/thermodynamics/model-free method/prediction分类
化学化工引用本文复制引用
项曙光,于萌萌,王建平,孙晓岩..汽液相平衡中无模型法的计算及应用[J].化工学报,2017,68(1):1-7,7.基金项目
国家自然科学基金项目（21176127）。 （）
