디메틸카보네이트와 이산화탄소 혼합물의 기포점 측정

안준용; 이병철; Joon-Yong Ahn; Byung-Chul Lee

Journal of the Korean Industrial and Engineering Chemistry, Vol.20, No.1, 94-98, February, 2009

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디메틸카보네이트와 이산화탄소 혼합물의 기포점 측정

Measurement of Bubble Points of Dimethyl Carbonate and Carbon Dioxide Mixtures

안준용, 이병철 ^†

한남대학교 나노생명화학공학과

Joon-Yong Ahn, and Byung-Chul Lee^†

Department of Chemical Engineering and Nano-Bio Technology, Hannam University, Daejeon 305-811, Korea

E-mail:

초록

본 연구에서는 가변부피 투시창이 설치되어 있는 고압 상평형 측정 장치를 사용하여 이산화탄소의 임계온도 이상과 디메틸카보네이트의 임계온도 이하의 온도 범위에서 혼합물의 조성을 변화시키면서 디메틸카보네이트와 이산화탄소 혼합물의 기포점을 압력을 측정하였다. 실험적으로 측정된 기포점 압력 데이터를 Peng-Robinson 상태방정식에 상관시킴으로써 기포점 조성과 평형을 이루는 이슬점 조성을 추정하였다. 실험적으로 측정된 기포점 압력은 Peng-Robinson 상태방정식으로 계산한 결과와 매우 잘 일치하였다. 가변부피 투시창이 설치되어 있는 고압 상평형 실험장치는 고압의 압축유체 혼합물의 기포점을 매우 쉽고 빠르게 측정할 수 있는 방법이라고 할 수 있다.

The bubble point pressures of dimethyl carbonate and carbon dioxide mixtures were measured by using a high-pressure experimental apparatus equipped with a variable-volume view cell, at various CO2 compositions in the range of temperatures above the critical temperature of CO2 and below the critical temperature of dimethyl carbonate. The experimental bubble point pressure data were correlated with the Peng-Robinson equation of state (PR-EOS) to estimate the corresponding dew point compositions at equilibrium with the bubble point compositions. The experimentally measured bubble point pressures gave good agreement with those calculated by the PR-EOS. The variable-volume view cell equipment was verified to be an easy and quick way to measure the bubble point pressures of high-pressure compressible fluid mixtures.

Keywords:bubble point pressure;carbon dioxide;dimethyl carbonate;variable-volume view cell;Peng-Robinson equation of state

[References]

Choi EJ, Yeo SD, J. Chem. Eng. Data, 43(5), 714 (1998)
Lee JM, Lee BC, Cho CH, Korean J. Chem. Eng., 17(5), 510 (2000)
Prausnitz JM, Lichtenthaler RN, de Azevedo EG, Molecular Thermodynamics of Fluid-Phase Equilibria, 3rd ed., Prentice-Hall, Englewood Cliffs, NJ (1999)
Lee JM, Lee BC, Hwang SJ, J. Chem. Eng. Data, 45, 1162 (2000)
Oh DJ, Lee BC, Hwang SJ, J. Chem. Eng. Data, 52, 1273 (2007)
Poling BE, Prausnitz JM, O’Connell JP, The Properties of Gases and Liquids, 5th ed., McGraw-Hill, New York, NY (2001)
Winnick J, Chemical Engineering Thermodynamics, John Wiley & Sons, New York, NY (1997)

[Referenced By]

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[1] Choi EJ, Yeo SD, J. Chem. Eng. Data, 43(5), 714 (1998)

[2] Lee JM, Lee BC, Cho CH, Korean J. Chem. Eng., 17(5), 510 (2000)

[3] Prausnitz JM, Lichtenthaler RN, de Azevedo EG, Molecular Thermodynamics of Fluid-Phase Equilibria, 3rd ed., Prentice-Hall, Englewood Cliffs, NJ (1999)

[4] Lee JM, Lee BC, Hwang SJ, J. Chem. Eng. Data, 45, 1162 (2000)

[5] Oh DJ, Lee BC, Hwang SJ, J. Chem. Eng. Data, 52, 1273 (2007)

[6] Poling BE, Prausnitz JM, O’Connell JP, The Properties of Gases and Liquids, 5th ed., McGraw-Hill, New York, NY (2001)

[7] Winnick J, Chemical Engineering Thermodynamics, John Wiley & Sons, New York, NY (1997)