Vapour-liquid equilibrium for tripropylene glycol + aromatic hydrocarbons binary systems: Measurements and modelling

• Published in: Fluid phase equilibria Vol. 425; pp. 188 - 195
• Main Authors: Fendu, Elena M., Nicolae, Marilena, Oprea, Florin
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.10.2016
• Subjects: Aromatic hydrocarbons; Binary systems; Computational fluid dynamics; Glycols; Hydrocarbons; Interaction parameters; Mathematical models; Regression; Toluene; Tripropylene glycol; Vapour-liquid equilibria; VLE; Aromatic hydrocarbons; Regression; VLE; Tripropylene glycol
• ISSN: 0378-3812; 1879-0224
• DOI: 10.1016/j.fluid.2016.05.032

Vapour-liquid equilibrium (VLE) data are reported for five binary systems involving aromatic hydrocarbons (toluene, ethylbenzene, o-xylene, m-xylene, and p-xylene) and tripropylene glycol (2-[2-(2-hydroxypropoxy)propoxy]propan-1-ol). VLE data was determined by using a static method for the binary mixtures at temperatures within 305.15 K–496.15 K. The p-T-x experimental data obtained were correlated using the NRTL model, in order to obtain the binary interaction parameters for each mixture. We compared the T-x-y diagrams determined based on the NRTL resulted parameters with the diagrams calculated using the UNIFAC predictive model and IDEAL model. We observed differences between the T-x curves calculated with the NRTL model that includes the binary interaction parameters resulting from the experimental VLE data and the T-x curves calculated with UNIFAC predictive model and IDEAL model. [Display omitted] •VLE data are reported for five binary systems involving aromatic hydrocarbons and TPG.•VLE data are measured in temperature range of 305.15 K–496.15 K.•The VLE experimental data were correlated with the NRTL model.•Results from NRTL model are compared with data calculated by IDEAL and UNIFAC models.•NRTL model with our parameters shows different behavior than IDEAL and UNIFAC models.