Head Space Gas Chromatography를 이용한 MTBE-Methanol, MTBE-n-Heptane, n-Heptane-Methanol계의 기액평형

이주동; 이태종; 박소진

Journal of the Korean Industrial and Engineering Chemistry, Vol.5, No.4, 706-713, August, 1994

Vapor-Liquid Equilibria for the Systems of MTBE-Methanol, MTBE-n-Heptane, n-Heptane-Methanol by Using Head Space Gas Chromatography

이주동, 이태종, 박소진

초록

45℃와 65℃의 등온하에서 MTBE-methanol, MTBE-n-heptane, methanol-n-heptane 각 이성분계에 대한 등온 기액 평형 데이타를 head space gas chromatography(H.S.G.C.)를 이용해서 측정하였다. 이들중에 MTBE-methanol계와 methanol-n-heptane계에서 최소공비점이 발견되었으며, 특히 methanol-n-heptane계에서는 불용영역의 존재로 인한 불균일 최소공비점을 나타내었다. 각각의 실험 데이타들은 과잉 Gibbs 에너지 모델에 합치시켜서 그 상관관계를 알아 보았으며, Redlich-Kister의 적분법에 의한 열역학적 일치성 시험도 수행하였다.

Isothermal vapor-Liquid equilibrium data have been measured for binary systems MTBE-methanol, MTBE-n-heptane, and methanol-n-heptane at 45℃ and 65℃ by using head space gas chromato-graphy ( H.S.G.C). Among these systems a minimum azeotrope was observed in both of MTBE-methanol system and n-heptane-methanol system. Particularly n-heptane-methanol system has a heterogeneous minimum azotrope since it has an immisible region. These equilibrium data were correlated with the excess Gibbs energy model, and the thermodynamic consistency test was also carried out by using Redlich-Kister equation.

[References]

Mato FA, Berro C, J. Chem. Eng. Data, 36, 259 (1991)
Schmidt AP, Chem. Ing. Tech., 50, 537 (1978)
Hussam A, Carr PW, Anal. Chem., 57, 793 (1985)
Margules MS, S.-B.Akad. Wiss. Wien, 104, 1234 (1895)
Wilson GM, J. Am. Chem. Soc., 86, 127 (1964)
Renon H, Prausnitz JM, AIChE J., 14, 135 (1968)
Abrams DS, Praunistz JM, AIChE J., 21, 116 (1975)
Redlich O, Kister AT, Ind. Eng. Chem., 40, 345 (1948)
Gmehling J, Weidlich U, J. Chem. Eng. Data, 30, 95 (1985)
Park SJ, Chio BH, Rhee BS, "The First Korea-Japan Symposium on Separation Technology," 213, Kyoungju, Korea (1978)
Kolb B, J. Chromatogr., 122, 553 (1976)
Park SJ, Rhee BS, HWAHAK KONGHAK, 28(4), 386 (1990)
Pedersen KS, Fredenslund P, Ind. Eng. Chem. Process Des. Dev., 23, 566 (1984)
Gmehling J, Onken U, Arlt W, "Vapor-Liquid Equilibrium Data Collection," 1, 2c, Dechema, Frankfurt, Germany (1981)

[Referenced By]

[1] Mato FA, Berro C, J. Chem. Eng. Data, 36, 259 (1991)

[2] Schmidt AP, Chem. Ing. Tech., 50, 537 (1978)

[3] Hussam A, Carr PW, Anal. Chem., 57, 793 (1985)

[4] Margules MS, S.-B.Akad. Wiss. Wien, 104, 1234 (1895)

[5] Wilson GM, J. Am. Chem. Soc., 86, 127 (1964)

[6] Renon H, Prausnitz JM, AIChE J., 14, 135 (1968)

[7] Abrams DS, Praunistz JM, AIChE J., 21, 116 (1975)

[8] Redlich O, Kister AT, Ind. Eng. Chem., 40, 345 (1948)

[9] Gmehling J, Weidlich U, J. Chem. Eng. Data, 30, 95 (1985)

[10] Park SJ, Chio BH, Rhee BS, "The First Korea-Japan Symposium on Separation Technology," 213, Kyoungju, Korea (1978)

[11] Kolb B, J. Chromatogr., 122, 553 (1976)

[12] Park SJ, Rhee BS, HWAHAK KONGHAK, 28(4), 386 (1990)

[13] Pedersen KS, Fredenslund P, Ind. Eng. Chem. Process Des. Dev., 23, 566 (1984)

[14] Gmehling J, Onken U, Arlt W, "Vapor-Liquid Equilibrium Data Collection," 1, 2c, Dechema, Frankfurt, Germany (1981)