Vapor–Liquid Equilibrium Data for Binary Mixtures of Acetic Acid + Anisole, Acetone + Anisole, and Isopropanol + Anisole at Pressure 96.15 kPa

Abstract

In this work, the vapor−liquid equilibrium (VLE) data have been generated at the local atmospheric pressure of 96.15 kPa for the binary systems acetic acid + anisole, acetone + anisole, and isopropanol + anisole. A circulation type apparatus was designed and developed with few modifications in one of the stills proposed in the literature. For the validation of the new apparatus, VLE data were generated for the known system of N,N-DMF + aniline and compared with the literature data. The VLE data, generated in Txy form for all pairs, were found to be consistent through the point-to-point consistency test. Activity coefficient models, Wilson, NRTL, and UNIQUAC, were fitted to these data using an objective function of minimizing the sum of deviation between experimental and calculated total pressures to estimate the binary interaction parameters. The model predictions with estimated parameters were compared with the experimental data and found appropriate.

Evaluation of a New Multimodal Optimization Algorithm in Fluid Phase Equilibrium Problems

“…Finally, Figure 8 depicts the vapor-liquid equilibrium diagram at 96.15 kPa for the system acetic acid (1) + anisole (2). It is noted that the bubble and dew point curves produced with the estimated parameters show a good agreement with the experimental data published by Mali et al (2017). Furthermore, a minimum boiling azeotrope close to the pure acetic acid can be predicted.…”

“…The search is conducted in the interval [−1000, 1000] for both parameters (in fact, the search for binary interaction parameters for activity coefficient models is considered an unconstrained problem). The global minimum for this problem is 1 = 426, 24 and 2 = 128, 52 (obviously, this solution is different to that presented by Mali et al, 2017, since they used different objective functions). Only one minimum is found in this problem.…”

“…The superscripts exp and calc represent, respectively, experimental and calculated data. It must be stressed that this objective function is different to that employed by Mali et al (2017). These authors used an absolute deviation between calculated and experimental saturation pressures.…”

“…The experimental points are calculated by the modified Raoult's Law (Walas, 1985). The experimental data employed in the parameter estimation (as well as all the other quantities, such as molar volumes and expressions for saturation pressures) are presented in Mali et al (2017) and, for the sake of conciseness, are not reproduced here.…”

“…scenario, the present work presents some applications of the MFPA algorithm in two phase equilibrium problems: (i) an application in refrigeration; the calculation of azeotropic composition in the mixture HFC4310mee (commercially known as Vertrel XF) + Tetrahydrofuran (THF), a refrigerant fluid -refrigerant fluids are usually pure substances or azeotropic mixtures; zeotropic mixtures are avoided in refrigeration, since the composition variations arising from vaporization and condensation processes can alter the performance of the refrigerator -and (ii) the parameter estimation in the binary system acetic acid + anisole, a system with applications in the agrochemical industry. The vapor-liquid equilibrium in the system acetic acid + anisole was recently studied by Mali, Mali, Patil, and Joshi (2017). The anisole exhibits insecticide properties and has been studied in recent years (Quan, Liu, and Liu, 2018).…”