Chemical Engineering Research & Design, Vol.102, 337-344, 2015
High pressure vapor-liquid equilibria of methyl acetate or ethyl acetate with 2-propanol at 1.5 MPa. Experimental data and predictions
Isobaric vapor-liquid equilibrium data for the binary systems methyl acetate + 2-propanol and ethyl acetate + 2-propanol at 1.5 MPa were obtained. The data quality was verified by using the point-to-point test of Van Ness and the Fortran routine of Fredenslund et al., which was implemented to third virial coefficient using the method of Orbey and Vera. Experimental data satisfied the validation criterion of Fredenslund et al. The azeotropic point of ethyl acetate + 2-propanol was not found at 1.5 MPa. The ASOG low pressure group contribution models and different versions of UNIFAC were employed for the verification of high pressure vapor-liquid equilibrium data predictions. The phi-phi approach was applied by using the Peng-Robinson equation of state and employing quadratic mixing rules. The UNIFAC-Lyngby model returned good overall predictions; however the modeling for both systems was best when the Peng-Robinson equation of state was applied. (C) 2015 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
Keywords:High pressure VLE data;Binary system;UNIFAC model;ASOG model;Peng-Robinson equation of state