Measurements by using an automatic pressure control and predictions of isobaric VLE at 1.5 MPa for binary mixtures of methyl acetate, ethyl acetate, 1–propanol and 1–butanol

Badajoz, Pedro Susial; Vera, Diego García; Montesdeoca, Isabel; Susial, Rodrigo; Stevenson, Silvia Díaz; Melián, Nayra Pulido

doi:10.1016/j.cherd.2019.09.044

Cited by 1 publication

(7 citation statements)

References 21 publications

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“…As in previous papers, 39,40 the PRSVWS 29−31 EOS shows globally the best results for all the experimental data of this work (see Table 10). However, the PRSV 29,30 EOS reproduces well the system at 100 kPa, and there are no significant differences between the PRSV 29,30 and PRSVWS 29−31 EOSs.…”

Section: ∑ ∑supporting

confidence: 85%

“…This equipment is included in an experimental setup. 39,40 The different elements as well as the measurement and control devices of the experimental installation have been previously described. 39,40 The stainless steel ebulliometer 38 has an operating capacity between 500 and 800 cm 3 , and it was operated with about 650 cm 3 .…”

Section: Methodsmentioning

confidence: 99%

“…39,40 The different elements as well as the measurement and control devices of the experimental installation have been previously described. 39,40 The stainless steel ebulliometer 38 has an operating capacity between 500 and 800 cm 3 , and it was operated with about 650 cm 3 . The minimum volume to flood the inverted doublewalled vessel is 500 cm 3 and the maximum volume to flood the still is 800 cm 3 .…”

Section: Methodsmentioning

confidence: 99%

“…The ebulliometer described in previous papers , was employed to obtain the vapor pressures as well as the VLE data for the ethanol (1) + water (2) mixtures at 100, 1500, and 2000 kPa. This equipment is included in an experimental setup. , The different elements as well as the measurement and control devices of the experimental installation have been previously described. , …”

Section: Experimental Sectionmentioning

confidence: 99%

“…After that time, approximately 15 cm 3 of the other pure substance (B) is charged, and therefore, a perturbation is generated between the phases. This mixture is kept under boiling conditions for about 90 min in the ebulliometer to ensure that an approximate stationary state, as in previous works, was verified. , When the recirculation time of both phases has elapsed, each phase is sampled in sealed containers for annealing and then measuring the density at 298.15 K.…”

Section: Experimental Sectionmentioning

confidence: 99%

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High-Pressure Phase Equilibria in an Ethanol/Water Binary System: Experimental Data and Modeling

et al. 2021

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Experimental data of vapor−liquid equilibria (VLE) are reported for the binary systems: ethanol (1) + water (2) at 100, 1500, and 2000 kPa. The data were verified for thermodynamic consistency by using different low-and high-pressure tests. The following minimum azeotropes were found for the binary systems: x 1,az = y 1,az = 0.899 and T = 351.39 K at 100 kPa, x 1,az = y 1,az = 0.857 and T = 440.70 K at 1500 kPa, and x 1,az = y 1,az = 0.850 and T = 453.83 K at 2000 kPa. The quality of the azeotropic data obtained was established by considering the trend of the bibliographic azeotropic data. The phase behavior was modeled using the Peng−Robinson equation of state (EOS) with several mixing rules and the perturbed-chain statistical associating fluid theory. The experimental data were satisfactorily correlated and a qualitative agreement with these predictive models was observed. ■ RESEARCH HIGHLIGHTS• VLE of water with ethanol was determined at 100, 1500, and 2000 kPa. • Data were verified with the area test, Van Ness direct test, and point-to-point test. • Data at high pressure were verified by using the Gibbs− Duhem equation. • Azeotropic data of water/ethanol were correlated.• VLE data of water + ethanol mixtures are well modeled by using different EOSs.

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