Vapor–liquid–liquid equilibrium and vapor–liquid equilibrium for the quaternary system water–ethanol–cyclohexane–toluene and the ternary system water–cyclohexane–toluene. Isobaric experimental determination at 101.3kPa

Pequenín, Ana; Asensi, Juan Carlos; Gomis, Vicente

doi:10.1016/j.fluid.2011.06.033

Cited by 8 publications

(5 citation statements)

References 11 publications

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“…First, VLLE calculations were compared to the measurements of Pequenín et al − The systems were water–toluene–cyclohexane, water–toluene–hexane, and water–cyclohexane–heptane . The values of HC–HC k ij were determined from SRK correlation of the VLE experimental data: 0.0221 for toluene–cyclohexane, − 0.0117 for toluene–hexane, , and −0.0042 for cyclohexane–heptane .…”

Section: Predictionsmentioning

confidence: 99%

“…Comparison among predicted and measured vapor-phase composition of the systems water–toluene–cyclohexane (black), water–toluene–hexane (red), and water–cyclohexane–heptane (blue). Diamonds: water; squares: toluene; circles: cyclohexane; crosses: hexane, triangles: heptane.…”

Section: Predictionsmentioning

confidence: 99%

“…Comparison among predicted and measured three-phase temperature of the systems water–toluene–cyclohexane (black), water–toluene–hexane (red), and water–cyclohexane–heptane (blue).…”

Section: Predictionsmentioning

confidence: 99%

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Mutual Solubility of Water and Hydrocarbons: A New Mixing Rule and the Development of a Predictive Scheme via the Cubic Two-State Equation of State

Medeiros

Brindis-Flores

2017

Ind. Eng. Chem. Res.

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The cubic two-state equation of state was employed for the correlation of measured mutual solubilities of water and 68 hydrocarbons. A new Kabadi−Danner's type mixing rule is presented, in which the water−water dispersive parameter of the cubic part is corrected due to the presence of a hydrophobic solute. The obtained binary parameters for the water−hydrocarbon pairs had a marked relationship with the chemical family (alkanes, cycloalkanes, aromatics, and unsaturated aliphatics) and with the co-volumes. This allowed the development of general correlations to predict these parameters in the case of lack of experimental solubilities. The model's overall deviations from measured data were 12% and 16% for the solubilities of water in hydrocarbons and of hydrocarbons in water, respectively. The temperature and pressure ranges of the correlated data were 273.2 to 550 K and 1 to 1000 bar, respectively. To check model reliability, the correlations were successfully extended to predict bubble pressures and dew temperatures of water−hydrocarbon binaries and ternaries and mutual solubilities in multi-hydrocarbon mixtures.

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Section: Predictionsmentioning

confidence: 99%

Section: Predictionsmentioning

confidence: 99%

See 1 more Smart Citation

Mutual Solubility of Water and Hydrocarbons: A New Mixing Rule and the Development of a Predictive Scheme via the Cubic Two-State Equation of State

Medeiros

Brindis-Flores

2017

Ind. Eng. Chem. Res.

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“…Moreover, as was previously mentioned, traces of such an entrainer, which is a typical hydrocarbon in gasoline, are useful within the recovered 2-propanol fraction with a view to its subsequent use as a fuel. Hence, the purity requirements for the dehydrated 2-propanol product fraction do not need to be extremely tight [29,32,[34][35][36]43,44]. In addition, amyl alcohol can also be considered as a candidate entrainer for the separation of 2-propanol + water mixtures, considering the relevant literature on phase equilibria [56][57][58][59][60].…”

Section: Entrainer Selectionmentioning

confidence: 99%

“…For instance, Gomis and co-workers [32,33] have analyzed the vapor-liquid-liquid equilibria (VLLE) and the vapor-liquid equilibria (VLE) for ethanol + water + heptane and the ethanol + water + hexane systems. Besides this, Pequenín et al [34][35][36] have investigated the VLLE and the VLE behavior of various systems involving ethanol, water and various hydrocarbons as solvents (cyclohexane, heptane, isooctane, toluene). In the end, as suggested by Pienaar [30], diisopropyl ether (DIPE) can also be considered as a feasible entrainer in the case of ethanol dehydration by HAD processes.…”

Section: Introductionmentioning

confidence: 99%

Separation of the Mixture 2-Propanol + Water by Heterogeneous Azeotropic Distillation with Isooctane as an Entrainer

et al. 2021

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Advanced processes, which are alternatives to ordinary distillation, are essential to dehydrate azeotropic alcoholic mixtures for biofuel production. In that regard, this work focuses on the analysis of heterogeneous azeotropic distillation for the separation of a 2-propanol + water mixture in order to recover the alcohol with a sufficiently low water content. By comparing the performances of various entrainers on the basis of ternary maps, isooctane was selected for further process analysis. An advantage it poses is related to the fact that traces of it within the recovered dehydrated alcohol are highly welcome with a view to its subsequent use as a fuel. Aspen Plus® V11 software was employed for the simulation of the process, thus filling the gap existing in the literature due to the lack of studies on the process analysis of the heterogeneous azeotropic distillation of the 2-propanol + water system using isooctane as an entrainer.

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Isobaric vapor – liquid – liquid equilibrium for water + MTBE + alcohol (ethanol or 1-butanol) mixtures

Mejı́a

Cartes

Chaparro

2020

Fluid Phase Equilibria

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Vapor–liquid–liquid equilibrium and vapor–liquid equilibrium for the quaternary system water–ethanol–cyclohexane–toluene and the ternary system water–cyclohexane–toluene. Isobaric experimental determination at 101.3kPa

Cited by 8 publications

References 11 publications

Mutual Solubility of Water and Hydrocarbons: A New Mixing Rule and the Development of a Predictive Scheme via the Cubic Two-State Equation of State

Mutual Solubility of Water and Hydrocarbons: A New Mixing Rule and the Development of a Predictive Scheme via the Cubic Two-State Equation of State

Separation of the Mixture 2-Propanol + Water by Heterogeneous Azeotropic Distillation with Isooctane as an Entrainer

Isobaric vapor – liquid – liquid equilibrium for water + MTBE + alcohol (ethanol or 1-butanol) mixtures

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