초임계유체와 염을 이용한 에탄올농축에 관한 연구(I)-CO2-C2H5OH계와 CO2-H2O계의 고압기액평형-

조정식; 박선근; 임종성; 김재덕; 이윤용; 전해수

HWAHAK KONGHAK, Vol.29, No.1, 111-117, February, 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-

조정식, 박선근, 임종성, 김재덕, 이윤용, 전해수

초록

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.

[References]

Adachi Y, Sugie H, Fluid Phase Equilib., 28, 103 (1986)
Arai Y, Kemikaru Enjiniaringu, 31, 21 (1986)
Arai Y, Iwai R, Kag. Souchi, 27, 59 (1985)
Gmehling J, Onken U, "Vapor-Liquid Equilibrium Data Collection," Chemistry Data Series Vol. 1, Part 2a, DECHEMA (1977)
이윤용, "초임계유체추출-원리와 응용," 한국화학공학회 하계특별심포지움, Proceeding, 용평 (1986)
Patel NC, Teja AS, Chem. Sci. Eng., 37, 463 (1982)
Takenouchi S, Kennedy GC, Am. J. Sci., 262, 1055 (1964)
Takishima S, Saiki K, Arai K, Saito S, J. Chem. Eng. Jpn., 19, 48 (1986)
Trebble MA, Bishnoi PR, Fluid Phase Equilib., 29, 465 (1986)
Wiebe R, Chem. Rev., 29, 475 (1941)
Wiebe R, Gaddy VL, J. Am. Chem. Soc., 61, 315 (1939)
Wiebe R, Gaddy VL, J. Am. Chem. Soc., 62, 815 (1940)
Wiebe R, Gaddy VL, J. Am. Chem. Soc., 63, 475 (1941)

[Referenced By]

[1] Adachi Y, Sugie H, Fluid Phase Equilib., 28, 103 (1986)

[2] Arai Y, Kemikaru Enjiniaringu, 31, 21 (1986)

[3] Arai Y, Iwai R, Kag. Souchi, 27, 59 (1985)

[4] Gmehling J, Onken U, "Vapor-Liquid Equilibrium Data Collection," Chemistry Data Series Vol. 1, Part 2a, DECHEMA (1977)

[5] 이윤용, "초임계유체추출-원리와 응용," 한국화학공학회 하계특별심포지움, Proceeding, 용평 (1986)

[6] Patel NC, Teja AS, Chem. Sci. Eng., 37, 463 (1982)

[7] Takenouchi S, Kennedy GC, Am. J. Sci., 262, 1055 (1964)

[8] Takishima S, Saiki K, Arai K, Saito S, J. Chem. Eng. Jpn., 19, 48 (1986)

[9] Trebble MA, Bishnoi PR, Fluid Phase Equilib., 29, 465 (1986)

[10] Wiebe R, Chem. Rev., 29, 475 (1941)

[11] Wiebe R, Gaddy VL, J. Am. Chem. Soc., 61, 315 (1939)

[12] Wiebe R, Gaddy VL, J. Am. Chem. Soc., 62, 815 (1940)

[13] Wiebe R, Gaddy VL, J. Am. Chem. Soc., 63, 475 (1941)