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Isobaric vapor-liquid equilibrium for toluene, 3-methylthiophene and N-formylmorpholine at 101.33 kPa

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Abstract

Isobaric vapor-liquid equilibrium (VLE) data were measured for binary mixtures of toluene+N-formylmorpholine, toluene+3-methylthiophene and 3-methylthiophene+N-formylmorpholine at 101.33 kPa. The VLE data of the binary systems were found to be thermodynamically consistent. The saturated vapor pressure calculated by CSGC-PR equation of the pure component had higher accuracy than that calculated by Antoine equation. The liquid-phase activity coefficients of the binary systems were calculated by the Wilson, NRTL and UNIFAC models, and the binary interaction parameters of the three models were determined by the VLE data. The Wilson model was selected as the most suitable model to predict the VLE data of the ternary system of toluene+3-methylthiophene+Nformylmorpholine. The relative volatility between toluene and 3-methylthiophene was also calculated. Moreover, the effect of N-formylmorpholine as solvent was studied. When the molar ratio of solvent to feed (S/F) was 7, the relative volatility reached 1.904, which is almost twice the relative volatility without solvent. Therefore, N-formylmorpholine can be considered as an effective extracting agent for the separation of the close-boiling mixture of toluene+3-methylthiophene by extractive distillation.

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References

  1. Ma Peisheng, Chang Heying. Chemical Engineering Thermodynamics[M]. Chemical Industry Press, Beijing, China, 2009. 271–276 (in Chinese).

    Google Scholar 

  2. Botia D C, Riveros D C, Ortiz P et al. Vapor-liquid in extractive distillation of the acetone/methanol system using water as entrainer and pressure reduction[J]. Industrial and Engineering Chemistry Research, 2010, 49(13): 6176–6183.

    Article  Google Scholar 

  3. Langston P, Hilal N, Shingfield S et al. Simulation and optimization of extractive distillation with water as solvent[ J]. Chem Eng Process, 2005, 44(3):345–351.

    Article  Google Scholar 

  4. Tan T C, Gan S H. Vapour-liquid equilibrium of water-ethanol-1-butanol-salt: Prediction and experimental verification[ J]. Chem Eng Res, 2005, 83(A12):1361–1371.

    Article  Google Scholar 

  5. van Winkle M. Distillation[M]. McGraw Hill, New York, USA, 1972.

    Google Scholar 

  6. Xiong J M, Zhang L P. Binary isobaric vapor-liquid equilibrium of N-formylmorpholine with benzene[J]. J Chem Ind Eng, 2007, 58(5):1080–1090 (in Chinese).

    Google Scholar 

  7. Park S J, Gmehling J. Isobaric vapor-liquid equilibrium data for the binary system 1, 3, 5-trimethylbenzene/Nformylmorpholine and m-xylene/ N-formylmorpholine [J]. J Chem Eng Data, 1989, 34(4):399–401.

    Article  Google Scholar 

  8. Huang X J, Xia S Q. Vapor-liquid of N-formylmorpholine with toluene and xylene at 101. 33, KPa[J]. J Chem Eng Data, 2008, 53(7):252–255.

    Article  Google Scholar 

  9. Marzal P, Monton J B. Measurements for the chlorobenzene-2-chloromethyl-benzoxazole system[J]. J Chem Eng Data, 2006, 51(5):2110–2113.

    Google Scholar 

  10. Chu J C, Wang S L, Levy S L et al. Vapor-Liquid Equilibrium Data[M]. J. W. Edwards Publisher Inc, MI, USA, 1956.

    Google Scholar 

  11. Herington E F G. Tests for the consistency of experimental isobaric vapor-liquid equilibrium data[J]. J Inst Pet, 1965, 37(3): 457–470.

    Google Scholar 

  12. Wilson G M. Vapor-liquid equilibrium. XI. A new expression for the excess free energy of mixing[J]. J Am Chem Soc, 1964, 86(2):127–130.

    Article  Google Scholar 

  13. Renon H, Prausnitz J M. Local compositions in thermodynamic excess functions for liquid mixtures[J]. AIChE J, 1968, 14(1):135–144.

    Article  Google Scholar 

  14. Reid R C, Prausnitz J M, Poling B E. The Properties of Gases and Liquids [M]. 4th ed. McGraw-Hill, New York, USA, 1987.

    Google Scholar 

  15. Gao Guanghua, Yu Yangxin. Chemical Engineering Thermodynamics[M]. Tsinghua University Press, Beijing, China, 2000 (in Chinese).

    Google Scholar 

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Authors and Affiliations

  1. School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China

    Pingli Li  (李凭力), Haixia Qi  (亓海霞) & Heying Chang  (常贺英)

  2. Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin, 300072, China

    Pingli Li  (李凭力) & Haixia Qi  (亓海霞)

Authors
  1. Pingli Li  (李凭力)
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  2. Haixia Qi  (亓海霞)
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  3. Heying Chang  (常贺英)
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Correspondence to Pingli Li  (李凭力).

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LI Pingli, born in 1961, male, Dr, associate researcher.

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Li, P., Qi, H. & Chang, H. Isobaric vapor-liquid equilibrium for toluene, 3-methylthiophene and N-formylmorpholine at 101.33 kPa. Trans. Tianjin Univ. 18, 224–230 (2012). https://doi.org/10.1007/s12209-012-1792-8

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  • DOI: https://doi.org/10.1007/s12209-012-1792-8

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