Isobaric Vapor-Liquid Equilibrium for Methyl Acetate + Methanol + Water at 101.3 kPa

Martin, Maria C.; Mato, Rafael B.

doi:10.1021/je00017a071

Cited by 22 publications

(15 citation statements)

References 7 publications

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“…also attempted to study approximate boiling points and azeotropic systems with more than three components, and several available methods were summarized in details. Among these MA synthesis systems, two ternary mixtures of H 2 O‐Me‐MeOAc and Me‐MeOAc‐MA have been studied previously . However, the results of previous researches are insufficient for other more complicated systems.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamics and separation process for quaternary acrylic systems

Zuo

et al. 2015

AIChE Journal

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in Wiley Online Library (wileyonlinelibrary.com)Vapor-liquid equilibrium (VLE) and liquid-liquid equilibrium (LLE) data of binary and ternary acrylic systems were systematically measured. Subsequently, VLLE phase diagrams of binary systems, tridimensional VLE phase diagrams of methyl acrylate (MA)-methanol (Me)-H 2 O ternary system, and quaternary LLE phase diagrams of MA-Me-H 2 O-methyl acetate (MeOAc) system were constructed. These diagrams clearly demonstrated the effects of temperature on phase equilibrium. The experimental data was fitted by the NRTL and UNIQUAC models, and the best-fitted parameters were used to predict interaction properties of ternary and quaternary mixture. Therefore, the phase equilibrium data were provided as reference for the design of acrylic systems rectification or extraction process. Residue curve was mapped out for MA-Me-H 2 O system through Aspen plus software. Finally, using thermodynamics and residue curve as theoretical basis, two novel separation processes were proposed and applied to the quaternary acrylic systems. V C 2015 American Institute of Chemical Engineers AIChE J, 62: [228][229][230][231][232][233][234][235][236][237][238][239][240] 2016

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Section: Introductionmentioning

confidence: 99%

Thermodynamics and separation process for quaternary acrylic systems

Zuo

et al. 2015

AIChE Journal

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“…This problem involves the ternary mixture of methyl acetate (component 1), methanol (component 2) and water (component 3) at P = 101.3 kPa, the phase behavior of which was measured and modeled by Martin and Mato [32]. For the liquid phase, the model used is NRTL-m, a variation of NRTL due to Mato et al [33] in which α ij is not an independent parameter but is instead determined from 1 2…”

Section: Problemmentioning

confidence: 99%

Reliable phase stability analysis for asymmetric models

Xu¹,

Haynes

Stadtherr

2005

Fluid Phase Equilibria

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A deterministic technique for reliable phase stability analysis is described for the case in which asymmetric modeling (different models for vapor and liquid phases) is used. In comparison to the symmetric modeling case, the use of multiple thermodynamic models in the asymmetric case adds an additional layer of complexity to the phase stability problem. To deal with this additional complexity we formulate the phase stability problem in terms of a new type of tangent plane distance function, which uses a binary variable to account for the presence of different liquid and vapor phase models. To then solve the problem deterministically, we use an approach based on interval analysis, which provides a mathematical and computational guarantee that the phase stability problem is correctly solved, and that thus the global minimum in the total Gibbs energy is found in the phase equilibrium problem. The new methodology is tested using several examples, involving as many as eight components, with NRTL as the liquid phase model and a cubic equation of state as the vapor phase model. In two cases, published phase equilibrium computations were found to be incorrect (not stable).

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“…Methyl acetate and methanol are commonly used as organic solvents and chemical raw materials . During the poly (vinyl alcohol) production, the by‐product methyl acetate is blended with the raw material methanol to form an azeotrope . During the chemical separation process of azeotrope, the vapor–liquid composition is constant, and this type of mixture cannot be separated using the ordinary distillation technique .…”

Section: Introductionmentioning

confidence: 99%

Pressure swing distillation for the separation of methyl acetate‐methanol azeotrope

Wang

Liu

et al. 2019

Asia-Pacific J Chem Eng

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Pressure swing distillation (PSD) process was used to separate methyl acetate‐methanol azeotrope. Through the phase diagram analysis, distillation sequence and technological process were determined. On the basis of the principle of the minimum total annual cost (TAC), design variables such as feeding position, reflux ratio, and column plate number were optimized and the optimal parameters were determined. The high‐pressure column (HPC) under various pressures were analysed. The economic results of the PSD without heat integration, with partial heat integration, and with full heat integration were compared. The comparison results indicate that the TAC of the PSD without heat integration is the highest. The PSD with partial integration and full heat integration can effectively reduce the total capital cost and total operating cost. Compared with the PSD without heat integration, the TACs of partial heat integration and full heat integration exhibit 27% and 30% savings, respectively. Therefore, the PSD with full heat integration is more economically reasonable for separating methyl acetate‐methanol azeotrope.

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Isobaric Vapor-Liquid Equilibrium for Methyl Acetate + Methanol + Water at 101.3 kPa

Cited by 22 publications

References 7 publications

Thermodynamics and separation process for quaternary acrylic systems

Thermodynamics and separation process for quaternary acrylic systems

Reliable phase stability analysis for asymmetric models

Pressure swing distillation for the separation of methyl acetate‐methanol azeotrope

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