Salts effect on isobaric vapor−liquid equilibrium for separation of the azeotropic mixture allyl alcohol + water

Xu, Li; Xu, Dongmei; Shi, Puyun; Zhang, Kai; Ma, Xiaolong; Gao, Jun; Wang, Yinglong

doi:10.1016/j.fluid.2017.10.025

Cited by 24 publications

(20 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To compare the experimental data with the calculated values, the root-mean-square deviations (rmsd) and average absolute deviation (AAD) for the temperature ( T i ) and the vapor-phase composition ( y i ) were calculated following the eqs –. …”

Section: Resultsmentioning

confidence: 99%

Isobaric Vapor–Liquid Equilibrium Measurements of Binary Systems of Dimethyl Carbonate with Dimethyl Sulfoxide, Anisole, and Diethyl Oxalate at 101.3 kPa

et al. 2021

View full text Add to dashboard Cite

In this work, three entrainers were selected to separate the azeotrope of dimethyl carbonate (DMC) and methanol, which were dimethyl sulfoxide, anisole, and diethyl oxalate. The vapor–liquid equilibrium (VLE) data of four binary systems (DMC + dimethyl sulfoxide, DMC + anisole, DMC + diethyl oxalate, and methanol + diethyl oxalate) were measured using a modified Rose-type circulating still at 101.3 kPa. The Van Ness point-to-point test and infinite dilution test were used to test the thermodynamic consistency of the experimental VLE data. The nonrandom two-liquid, universal quasi-chemical, and Wilson models were used to correlate the measured VLE data. The binary interaction parameters of the three models were regressed.

show abstract

Section: Resultsmentioning

confidence: 99%

Isobaric Vapor–Liquid Equilibrium Measurements of Binary Systems of Dimethyl Carbonate with Dimethyl Sulfoxide, Anisole, and Diethyl Oxalate at 101.3 kPa

et al. 2021

View full text Add to dashboard Cite

show abstract

“…As shown in Figure , the consistency between the measured values and calculated values is good. In order to compare the values quantitatively, the root-mean-square deviations (RMSDs) for the temperature ( T i ) and vapor phase mole fraction ( y i ) were calculated with eqs –. …”

Section: Resultsmentioning

confidence: 99%

Strategy for the Separation of the Mixture of Dimethyl Carbonate, Formaldehyde, and Water

Song

Wang

Zhu³

et al. 2021

J. Chem. Eng. Data

View full text Add to dashboard Cite

In this work, the separation of a mixture of dimethyl carbonate (DMC), formaldehyde, and water is studied. In our process, formaldehyde is first extracted using water as the entrainer, and then the azeotrope of DMC–water is separated by extractive distillation with ethylene glycol. To verify the feasibility of the process, the liquid–liquid equilibrium (LLE) data of the DMC–formaldehyde–water system was measured and the vapor–liquid equilibrium (VLE) data of the DMC–ethylene glycol system was also measured at 101.3 kPa. Moreover, the reliability of experimental tie-line data was checked with the Bachman, Hand, and Othmer–Tobias equations, and the thermodynamic consistency of the measured VLE data was verified by the Van Ness test and infinite dilution test. Finally, all the measured values were correlated with the nonrandom two-liquid (NRTL) model and universal quasi-chemical (UNIQUAC) model, and the binary interaction parameters were regressed.

show abstract

“…The relative volatility of 2-propanol (1) to water (2) was calculated by using the following equation: , where y i and x i (salt-free) are respectively the mole fractions of component i in the vapor phase and liquid phase. The calculated results for the systems 2-propanol + water + calcium chloride/magnesium chloride/calcium nitrate/magnesium nitrate were listed in Tables –.…”

Section: Resultsmentioning

confidence: 99%

“…The mixture of 2-propanol and water forms a minimum boiling point azeotrope at atmospheric pressure . Therefore, 2-propanol dehydration cannot be achieved by conventional distillation, which requires special distillation, such as extractive distillation, salt distillation, pressure swing distillation, azeotropic distillation, and reactive distillation, etc . Since salt distillation has the ability to efficiently separate an azeotrope, it is regarded as a promising technique for the separation of 2-propanol and water.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Salts Effect on Isobaric Vapor–Liquid Equilibrium for the Azeotropic Mixture 2-Propanol + Water

Liu

Zhao

et al. 2019

J. Chem. Eng. Data

View full text Add to dashboard Cite

Vapor−liquid equilibrium (VLE) data for the systems 2-propanol + water + calcium chloride, 2-propanol + water + magnesium chloride, 2-propanol + water + calcium nitrate, and 2-propanol + water + magnesium nitrate were measured at the pressure of 101.3 kPa. Experimental data of all ternary systems passed the thermodynamic consistency test by modified McDermott−Ellis method. Then, the effects of salts on the vapor phase mole fraction of 2-propanol and the relative volatility of 2-propanol to water were analyzed. Results show that the azeotropic point of the system 2-propanol and water can be removed with addition of the salts, and the salting-out effects follow the order calcium nitrate > calcium chloride > magnesium nitrate > magnesium chloride. Furthermore, the LIQUAC model was adopted to correlate the VLE experimental data of the systems. The comparative results of the average relative deviation (Δz ̅) and the corresponding standard deviations (σ) between the experimental and calculated values indicate that LIQUAC model is suitable for the VLE calculation for the systems of 2-propanol + water + salts.

show abstract

Salts effect on isobaric vapor−liquid equilibrium for separation of the azeotropic mixture allyl alcohol + water

Cited by 24 publications

References 25 publications

Isobaric Vapor–Liquid Equilibrium Measurements of Binary Systems of Dimethyl Carbonate with Dimethyl Sulfoxide, Anisole, and Diethyl Oxalate at 101.3 kPa

Isobaric Vapor–Liquid Equilibrium Measurements of Binary Systems of Dimethyl Carbonate with Dimethyl Sulfoxide, Anisole, and Diethyl Oxalate at 101.3 kPa

Strategy for the Separation of the Mixture of Dimethyl Carbonate, Formaldehyde, and Water

Salts Effect on Isobaric Vapor–Liquid Equilibrium for the Azeotropic Mixture 2-Propanol + Water

Contact Info

Product

Resources

About