Measurement and Modelization of VLE for Butyl Acetate with Methanol, Ethanol, 1-Propanol, and 1-Butanol. Experimental Data at 0.15 MPa

Abstract

Vapor–liquid equilibrium at 0.15 MPa for binary mixtures of butyl acetate with methanol, ethanol, 1-propanol, and 1-butanol has been measured. The thermodynamic consistency was verified with the Redlich–Kister test, the Herington test, the direct Van Ness test, and the point-to-point test. Azeotropic data was found for the butyl acetate + 1-butanol binary system at 0.15 MPa. Modeling of binary systems was obtained by employing the group contribution models (ASOG and different versions of UNIFAC) and the perturbed chain-statistical associating fluid theory equation of state.

High Pressure Vapor–Liquid Equilibria of n-Heptane with Ethanol, 1-Propanol, 2-Propanol, and 1-Butanol at 1.5 MPa: Experimental Data of Binary Systems and Perturbed Chain–Statistical Associating Fluid Theory Model Predictions

“…We employed the critical properties from the literature and the vapor pressures reported in the bibliography , to obtain the statistical parameters of binary interaction when PRSV , EOS with both quadratic and Wong–Sandler (WS) mixing rules were applied.…”

“…A pressure transducer Wika A–10 for 0 to 4 MPa (uncertainty ±0.02 MPa) with AKO digital display was employed to send a signal between 4 and 20 mA to the Programmable Logic Controller (PLC) of a Phywe Comex System (see Figures and ) for automatic control of pressure. In addition, a digital transducer model 8311 from Burket Fluid Control Systems for 0 to 5 MPa (uncertainty of ±0.04 MPa) was equipped as in previous papers , for the verification of pressure. For the real-time pressure measurement, a GENSPEC GS4200 transducer from ESI Tech.…”

“…For the real-time pressure measurement, a GENSPEC GS4200 transducer from ESI Tech. Ltd. (Figure ) with an operating range of 0 to 2.5 MPa (uncertainty ±0.001 MPa) was used. , …”

“…In previous papers, the loading of substance B was carried out manually , by introducing about 15 mL of substance B every 90 min. The addition of substance B generates a disturbance of the vapor–liquid equilibrium of the A + B mixture inside the ebulliometer.…”

“…Consequently, the separation operation becomes more complex and the number of theoretical stages of the equipment increases. The elimination of the azeotropes in mixtures is an example in which the high pressure distillation can be applied. , …”