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HWAHAK KONGHAK,
Vol.29, No.1, 111-117, 1991
Vol.29, No.1, 111-117, 1991
초임계유체와 염을 이용한 에탄올농축에 관한 연구(I)-CO2-C2H5OH계와 CO2-H2O계의 고압기액평형-
A Study on concentration of Ethanol by su;ercritical Fluids & Salts(I)-High Pressure Vapor-Liquid Equilibria for CO2-C2H5OH and CO2-H2O systems-
기상과 액상 모두들 계속해서 순환시키는 상평형실험장치(circulation type)를 이용하여, CO2-C2H5OH계에 대한 고압기액상평형실험을 313.2K, 323.2K, 333.2K에서 압력(약 5MPa-혼합물의 임계압력부근)을 변화시키면서 수행하였다. 각각의 온도에 대한 혼합물의 임계압력은 8.1MPa, 9.3MPa, 10.6MPa 정도로서 온도가 증가할수록 혼합물의 임계압력이 증가하는 것을 알 수 있었다. 또 CO2-C2H5OH계 및 CO2-H2O계의 고압상평형자료를 Adachi와 Sugie의 홉합법칙을 사용한 Patel-Teja의 3차상태방정식에 적용하여 상관시켜 본 결과 만족할만한 상관결과를 얻었다.
High pressure vapor-liquid equilibria for CO2-C2H5OH system were measured at three tem-peratures of 313.2K, 323.2K and 333.2K using a circulation type of apparatus in which both vapor and liquid phase were continuously recirculated over a pressure range from ca. 5MPa up to near mixture critical point. The critical pressures of the mixtures were about 8.1MPa, 9.3MPa and 10.6MPa at the three temper-atures, respectively. This result shows that the temperature increases with the critical pressure of the mixture. The high pressure vapor-liquid equilibrium data for CO2-C2H5OH and CO2-H2O systems were satisfactorily correlated by applying the Patel-Teja equation of state with the Adachi-Sugie mixing rule.
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[Cited By]
- Cho JS, Lee KR, Lim JS, Kim JD, Choi DK, Lee YY, Chun HS, HWAHAK KONGHAK, 31(4), 448, 1993
- Cho JS, Lim JS, Kim JD, Lee YY, Chun HS, HWAHAK KONGHAK, 29(4), 487, 1991
- Cho J, Jeon J, Korean Chemical Engineering Research, 43(4), 474, 2005
- Cho JH, Park JK, Jeon JK, Journal of Industrial and Engineering Chemistry, 12(2), 206, 2006
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