The Prediction of Vapor-Liquid Equilibrium Data for Cyclohexanol-Cyclohexanone System at Subatmospheric Pressure

감압하에서 2성분 Cyclohexanol-Cyclohexanone계에 대한 기-액평형치의 추산

  • Shim, Hong-Seub (Department of Chemical Engineering, Keimyung University) ;
  • Kim, Jong-Shik (Department of Chemical Engineering, Keimyung University)
  • 심홍섭 (계명대학교 화학공학과) ;
  • 김종식 (계명대학교 화학공학과)
  • Received : 1998.12.16
  • Accepted : 1999.06.05
  • Published : 1999.08.10

Abstract

For the binary cyclohexanol-cyclohexanone system the vapor-liquid equilibrium data, which are the necessary ones for the design of the distillation columns in separation process of volatile liquid-mixtures, are measured at subatmospheric pressure of 150, 300 and 500 mmHg. An empirical relation between logarithmic values of relative volatility(log $\alpha$) and liquid phase composition(x), which predicts the vapor-liquid equilibrium data, is obtained from above measured data of 150, 300 and 500 mmHg and the published ones of 30, 100, 200, 395 and 750 mmHg. The predicted data are compared with the measured and published ones to be in good agreement.

Acknowledgement

Supported by : 계명대학교

References

  1. Stgber. Akad. Wiss. Wien Math. Naturwiss. Klasse(Ⅱ) v.104 M. Margules
  2. Z. Phys. Chem. v.72 J. J. Van Laar
  3. J. Amer. Chem. Soc. v.86 G. M. Wilson.
  4. AIChE J. v.14 H. Renon;Z. M. Prausnitz
  5. AIChE J. v.21 D. S. Abrams;J. M. Prausnitz
  6. Prediction of vapor-liquid equilibria by the ASOC method K. Kojima;K. Tochigi
  7. Vaporliquid equilibria using UNIFAC A. Fredenslund;J. Gmehling;P. Rasmussen
  8. Ind. Eng. Chem. v.43 W. H. Prahl
  9. Ph. D. Thesis Inha Univ. W. K. Park
  10. J. Chem. Eng. Data v.19 S. R. Goodwin;D. M. T. Newsham
  11. Vapor-Liquid Equilibrium Data Collection v.1 J. Gmehling;U. Onken;W. Arlt