Isobaric Vapor–Liquid Equilibrium Data of Binary Systems Containing 2-Ethoxyethanol, 2-Ethoxyethyl Acetate, and Toluene

Parsana, Vyomesh M.; Parekh, Urvi; Dabke, Sudhir P.; Ziniya, Keval; Joshi, Kedar; Vlugt, Thijs J. H.; Ramdin, Mahinder

doi:10.1021/acs.jced.0c00291

Cited by 4 publications

(4 citation statements)

References 19 publications

(38 reference statements)

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“…The VLE experiments were carried out using a modified ebulliometer. , The ebulliometer was cleaned with acetone to remove impurities of any other chemical. Traces of acetone were also removed by keeping the system under vacuum for a few hours.…”

Section: Methodsmentioning

confidence: 99%

Liquid–Liquid Extraction of Formic Acid with 2-Methyltetrahydrofuran: Experiments, Process Modeling, and Economics

Laitinen

Parsana

Jauhiainen

et al. 2021

Ind. Eng. Chem. Res.

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Formic acid (FA) is an interesting hydrogen (H 2 ) and carbon monoxide (CO) carrier that can be produced by the electrochemical reduction of carbon dioxide (CO 2 ) using renewable energy. The separation of FA from water is challenging due to the strong (cross)association of the components and the presence of a high boiling azeotrope. For the separation of dilute FA solutions, liquid–liquid extraction is preferred over conventional distillation because distilling large amounts of water is very energy-intensive. In this study, we use 2-methyltetrahydrofuran (2-MTHF) to extract FA from the CO 2 electrolysis process, which typically contains <20 wt % of FA. Vapor–liquid equilibrium (VLE) data of the binary system 2-MTHF–FA and liquid–liquid equilibrium (LLE) data of the ternary system 2-MTHF–FA–water are obtained. Continuous extraction and distillation experiments are performed to test the extraction power and recovery of 2-MTHF from the extract. The VLE and LLE data are used to design a hybrid extraction and distillation process to produce a commercial grade product (85 wt % of FA). A detailed economic analysis of this hybrid extraction–distillation process is presented and compared with the existing FA separation methods. It is shown that 2-MTHF is a cost-effective solvent for FA extraction from dilute streams (<20 wt % FA).

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Section: Methodsmentioning

confidence: 99%

Liquid–Liquid Extraction of Formic Acid with 2-Methyltetrahydrofuran: Experiments, Process Modeling, and Economics

Laitinen

Parsana

Jauhiainen

et al. 2021

Ind. Eng. Chem. Res.

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“…In addition, the test on the thermodynamic consistency based on the methodology proposed by Redlich and Kister 47 was performed for all the obtained experimental data. This test was chosen to verify the thermodynamic consistency of the experimental data because of its wide use in the literature, for instance in the works by Martin et al, 48 Vargas et al, 49 Parsana et al 50 and Das et al 51 The area test has been chosen also because it does not require (and the results do not depend on) any thermodynamic model, differently from a point-to-point test.…”

Section: Validation Of the Experimental Procedurementioning

confidence: 99%

Isobaric Vapor–Liquid Equilibrium Data for the Isopropanol–Water System

et al. 2021

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This work presents experimental isobaric vapor−liquid equilibrium data for the isopropanol−water system collected at 150 kPa, 200 kPa, 250 kPa, and 300 kPa at the Process Thermodynamics laboratory (PT lab) of Politecnico di Milano and its representation with the thermodynamic models PSRK, NRTL, UNIFAC, and Wilson. The system is strongly nonideal, with the presence of a minimum boiling azeotrope which was found at all the pressures of analysis. Data at the considered pressures for the system are not available in the literature even though they are of interest for thermodynamic modeling of strongly nonideal mixtures which employ thermodynamic parameters regressed on the basis of experimental points. The reliability of the operation of the experimental unit and of the measurements was checked by determining the vapor pressure curve of the single components and by comparing it with the ones from the literature and also by comparing the collected data for the binary system with those available in the literature at atmospheric pressure. In addition, the test on thermodynamic consistency has been performed for all the collected data.

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“…Accurate VLE data for the binary systems 2-methyltetrahydrofuran + formic acid, 13 2-ethoxyethanol + toluene, and 2-ethoxyethyl acetate + toluene have been measured at atmospheric pressure and vacuum pressure. 14 An ebulliometer was used to measure the boiling points of THF + AA and THF + TCE mixtures at five and six different pressures, respectively. The nonrandom two liquid (NRTL) and universal quasichemical (UNIQUAC) activity coefficient models were used to accurately correlate the experimental data.…”

Section: Introductionmentioning

confidence: 99%

“…For VLE data measured under vacuum, the PTx approach is better, as we can assume that the vapor phase is ideal. Accurate VLE data for the binary systems 2-methyltetrahydrofuran + formic acid, 2-ethoxyethanol + toluene, and 2-ethoxyethyl acetate + toluene have been measured at atmospheric pressure and vacuum pressure . An ebulliometer was used to measure the boiling points of THF + AA and THF + TCE mixtures at five and six different pressures, respectively.…”

Section: Introductionmentioning

confidence: 99%

Isobaric Vapor–Liquid Equilibrium Data for Tetrahydrofuran + Acetic Acid and Tetrahydrofuran + Trichloroethylene Mixtures

et al. 2023

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Vapor–liquid equilibrium (VLE) data for the binary systems tetrahydrofuran (THF) + acetic acid (AA) and THF + trichloroethylene (TCE) were measured under isobaric conditions using an ebulliometer. The boiling temperatures for the systems (THF + AA/THF + TCE) are reported for 13/15 compositions and five/six different pressures ranging from 50.2/60.0 to 101.1/101.3 kPa, respectively. The THF + AA system shows simple phase behavior with no azeotrope formation. The THF + TCE system does not exhibit azeotrope formation but seems to have a pinch point close to the pure end of TCE. The nonrandom two-liquid (NRTL) and universal quasichemical (UNIQUAC) activity coefficient models were used to accurately fit the binary (PTx) data. Both models were able to fit the binary VLE data satisfactorily. However, the NRTL model was found to be slightly better than UNIQUAC model in fitting the VLE data for both systems. The results can be used for designing liquid–liquid extraction and distillation processes involving mixtures of THF, AA, and TCE.

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Isobaric Vapor–Liquid Equilibrium Data of Binary Systems Containing 2-Ethoxyethanol, 2-Ethoxyethyl Acetate, and Toluene

Cited by 4 publications

References 19 publications

Liquid–Liquid Extraction of Formic Acid with 2-Methyltetrahydrofuran: Experiments, Process Modeling, and Economics

Liquid–Liquid Extraction of Formic Acid with 2-Methyltetrahydrofuran: Experiments, Process Modeling, and Economics

Isobaric Vapor–Liquid Equilibrium Data for the Isopropanol–Water System

Isobaric Vapor–Liquid Equilibrium Data for Tetrahydrofuran + Acetic Acid and Tetrahydrofuran + Trichloroethylene Mixtures

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