Approach to the 1-propanol dehydration using an extractive distillation process with ethylene glycol

Pla-Franco, Jordi; Lladosa, Estela; Loras, Sonia; Montón, Juan B.

doi:10.1016/j.cep.2015.03.007

Cited by 25 publications

(28 citation statements)

References 25 publications

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“…At x 2 ′ = 0.95, the literature correlations are close to the present correlation. At x 2 ′ = 1, the calculated minimum mole fractions for breaking the azeotrope have similar values, with x 3 = 0.570 for Pla-Franco et al 7 and x 3 = 0.555 for APV80 VLE-IG. These can be observed in Figure 3 The binary pair water (1) + ethylene glycol (3) is a common constituent pair in all the three ternary systems.…”

Section: ■ Results and Discussionmentioning

confidence: 61%

“…3 The main features of ethylene glycol are its low toxicity, low viscosity, and relatively low vapor pressure. Ternary VLE data have been reported by several authors, including Pla-Franco et al, 4 Kamihama et al, 5 and Dai et al 6 for water + ethanol + ethylene glycol and Pla-Franco et al 7 for water + 1-propanol + ethylene glycol. To the best of our knowledge, VLE data for water + 2-propanol + ethylene glycol are not available in the open literature.…”

Section: ■ Introductionmentioning

confidence: 91%

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Experimental Measurement and Modeling of Vapor–Liquid Equilibrium for the Ternary Systems Water + Ethanol + Ethylene Glycol, Water + 2-Propanol + Ethylene Glycol, and Water + 1-Propanol + Ethylene Glycol

et al. 2016

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The present work aims at establishing reliable activity coefficient model for the ternary systems water + ethanol + ethylene glycol, water + 2-propanol + ethylene glycol, and water + 1-propanol + ethylene glycol. Isobaric VLE data were reported for the ternary systems and for the binary system of water + ethylene glycol at 101.3 kPa. The NRTL equation was used for the modeling. Literature values of binary parameters for water + ethanol, water + 2-propanol, and water + 1-propanol, which were obtained in the modeling of the ternary systems containing glycerol, were used in this work. For the binary pair water + ethylene glycol, a unique set of binary parameters were used for all of the three ternary systems. Using the model parameters obtained, calculated results were in good agreement with the experimental values. The correlation indicated that the minimum mole fractions of ethylene glycol for breaking the azeotrope of water + ethanol, water + 2-propanol, and water + 1-propanol were, respectively, 0.072, 0.240, and 0.550. Comparisons were presented for experimental results and correlations available in the literature.

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Section: ■ Results and Discussionmentioning

confidence: 61%

Section: ■ Introductionmentioning

confidence: 91%

Experimental Measurement and Modeling of Vapor–Liquid Equilibrium for the Ternary Systems Water + Ethanol + Ethylene Glycol, Water + 2-Propanol + Ethylene Glycol, and Water + 1-Propanol + Ethylene Glycol

et al. 2016

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“…A high relative volatility (or selective) entrainer can effectively save energy in the ED process . Organic solvents such as ethylene glycol (EG), dimethyl sulfoxide (DMSO), glycerol and sulfolane are generally used as entrainers in the ED process. Recently, ionic liquids have been used as entrainers because of their obvious advantages.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the composition of mixed entrainer for economic extractive distillation process in view of the separation of tetrahydrofuran/ethanol/water ternary azeotrope

Zhao

Jia

et al. 2017

J of Chemical Tech & Biotech

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BACKGROUND: There are three binary azeotropes in the tetrahydrofuran/ethanol/water ternary system at atmospheric pressure. Ternary extractive distillation (ED) processes were studied to separate the ternary azeotropic mixture using two single component solvents and a mixed solvent as entrainer.RESULT: Based on the sequential iterative optimization procedure, the minimal total annual costs (TACs) of the ternary extractive distillation process using ethylene glycol (EG), dimethyl sulfoxide (DMSO), and the mixture of DMSO and EG as entrainer were obtained. Compared with two single component entrainers DMSO and EG, the TAC of the extractive distillation process with mixed entrainer (60 mol% DMSO + 40 mol% EG) decreases by 6.55% and 31.88%, respectively. Furthermore, the reboiler heat duties of two extractive distillation columns (EDCs) with mixed entrainer were compared with two single component entrainers. CONCLUSION:The results show that the optimal ED process using mixed entrainer performs better than that using single component entrainers from the perspective of economics. Moreover, there is a tradeoff between the reboiler heat duties of two EDCs, which can be adjusted by changing the entrainer performance in two EDCs. The use of mixed entrainer enhances the flexibility of the tradeoff because it only needs to change the composition of the mixed entrainer.

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“…The separation of the mixture becomes feasible with the aid of extractive distillation process by employing a third component in the process to break the azeotrope [12]. Franco et al have discussed the prospective of ethylene glycol as entrainer in 1-propanol dehydration [13]. Keeping in mind the potential use of ethylene glycol as entrainer, the present investigation focuses on the molecular interactions resulting in modifications of molecular and dipolar orientation between 1-propanol and ethylene glycol at different temperatures (T= 298, 308 and 313K).…”

Section: Introductionmentioning

confidence: 99%

Ethylene Glycol as Entrainer in 1-Propanol Dehydration: Scrutiny of Physicochemical Properties of Ethylene Glycol+1-Propanol Binary Mixture at Different Temperatures

2019

IJITEE

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Density (ρ), and dielectric permittivity (ε) of the binary mixture of ethylene glycol + 1- propanol have been determined as a function of mole fraction of ethylene glycol at T = (298, 308 and 313)K. These measurements have been employed to compute thermodynamic properties like molar volume (V), and molar polarization (P) of the liquid mixtures. Excess properties such as VE, εE and PE for the binary mixture have also been calculated at different temperatures. In order to calculate the standard deviations of the excess properties, Redlich – Kister polynomial equation was used. The negative and positive values of the excess properties predicted the type and strength of molecular interactions between the components in the binary mixture.The excess molar volume for the mixture at all temperatures is found to be negative. The εE values for ethylene glycol + 1-propanol has been found to be negative at 298K and but positive values are obtained at 308 and 313K. The divergent magnitudes of εE values at different temperatures have been attributed to different strengths of hydrogen bond interactions as well as alignments of net dipoles.

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Approach to the 1-propanol dehydration using an extractive distillation process with ethylene glycol

Cited by 25 publications

References 25 publications

Experimental Measurement and Modeling of Vapor–Liquid Equilibrium for the Ternary Systems Water + Ethanol + Ethylene Glycol, Water + 2-Propanol + Ethylene Glycol, and Water + 1-Propanol + Ethylene Glycol

Experimental Measurement and Modeling of Vapor–Liquid Equilibrium for the Ternary Systems Water + Ethanol + Ethylene Glycol, Water + 2-Propanol + Ethylene Glycol, and Water + 1-Propanol + Ethylene Glycol

Optimization of the composition of mixed entrainer for economic extractive distillation process in view of the separation of tetrahydrofuran/ethanol/water ternary azeotrope

Ethylene Glycol as Entrainer in 1-Propanol Dehydration: Scrutiny of Physicochemical Properties of Ethylene Glycol+1-Propanol Binary Mixture at Different Temperatures

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