The prediction of vapor-liquid equilibrium data for 2-methyl-2-propanol-2-butanone system at low pressure

저압하에서 2-methyl-2-propanol-2-butanone계의 기액평형치의 추산

  • Shim, Hong-Seub (Dept. of Chemical Industry. Yeungnam College of Science & Technology) ;
  • Rhew, Jong-Ha (Dept. of Chemical Industry. Yeungnam College of Science & Technology)
  • 심홍섭 (영남이공대학 물질공학계열) ;
  • 류종하 (영남이공대학 물질공학계열)
  • Received : 2003.09.25
  • Accepted : 2004.02.20
  • Published : 2004.02.28

Abstract

The Vapor-liquid equilibrium data for the binary system of 2-methyl-2-propanol-2-butanone are measured at subatmospheric pressure of 100, 200, 300, 400, 500, 600, 700 and 760 torr. This study shows that the relations between logarithmic values of relative valatility(log ${\alpha}$)and liquid phase composition(${\chi}$) in the above binary systems are expressed as a linear function. When the linear relationships of between logarithmic values of relative volatilities and liquid phase compositions in the binary systems of various pressure intersect at a point, this empirical equation can be applied to the systems of this kind. From these relations the vapor-liquid equilibrium data are estimated and compared with the measured values to be in a good agreement with in accuracy ${\pm}0.0021$ for the various pressure.

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