초임계유체와 염을 이용한 에탄올농축에 관한 연구(II)-CO2-C2H5OH-H2O계의 고압기액평형-

조정식; 임종성; 김재덕; 이윤용; 전해수

HWAHAK KONGHAK, Vol.29, No.4, 487-493, August, 1991

초임계유체와 염을 이용한 에탄올농축에 관한 연구(II)-CO₂-C₂H₅OH-H₂O계의 고압기액평형-

A Study on Concentration of Ethanol by Supercritical Fluids and Salts(II)-High Presure Vapor-Liquid Equilibria for CO₂-C₂H₅OH-H₂O System-

조정식, 임종성, 김재덕, 이윤용, 전해수

초록

기상과 액상 모두를 계속해서 순환시키는 circulation type의 고압상평형장치를 이용하여, CO₂-C₂H₅OH-H₂O계에 대한 고압기액상평형실험을 313.2K와 333.2K에서 압력(7.9MPa에서 18.5MPa까지)과 feed 에탄올농도(20wt%에서 70wt%까지; CO₂ free basis)를 변화시키면서 수행하였다. CO₂-C₂H₅OH-H₂O계의 고압상평형자료를 Adachi와 Sugie의 혼합규칙을 사용한 Patel-Teja식에 적용하여 상관시켜 본 결과 Wilson type의 혼합규칙, 그리고 Group Contribution Equation of State를 사용할 때보다 기액상평형을 잘 예측할 수 있었고, 본 실험자료와 만족할 만한 상관결과를 얻을 수 있었지만, 분리계수나 분배계수의 거동에 대한 예측은 정확하게 표한하지 못하였다.

High pressure vapor-liquid equilibria for CO₂-C₂H₅OH-H₂O system were measured at two temper-atures of 313.2K and 333.2K using a circulation type of apparatus in which both bapor and liquid phase were continuously recirculated over a pressure range from 7.9MPa to 18.5MPa. The ethanol concentration in feed varied from 20wt% to 70wt%(CO₂ free basis). The Patel-Teja Equation of State with Adachi-Sugie mixing rule predicted the experimental data better than the same equation of state with Wilson type mixing rule and group contribution Equation of State, but could not accurately represent the behavior of the separa-tion factor and distribution coefficient.

[References]

Adachi Y, Sugie H, Fluid Phase Equilib., 28, 103 (1986)
Arai Y, Kamikaru Enjiniaringu, 31, 21 (1986)
Arai Y, Iwai R, Kag. Souchi, 27, 59 (1985)
Baker LCW, Anderson TF, J. Am. Chem. Soc., 79, 2071 (1957)
Brignole EA, Skjold-Jorgensen S, Fredenslund AA, Application of GC-EOS to Supercritical Fluid Extraction, In: Penninger, J.M.L., Radosz, M., Mchungh, M.A. and Krukonis, V.J.(Editors), "Supercritical Fluid Technology," p. 87 (1985)
Cho JS, Park SK, Lim JS, Kim JD, Lee YY, Chun HS, HWAHAK KONGHAK, 29(1), 111 (1991)
Francis AW, J. Phys. Chem., 58, 1099 (1954)
Furuta S, Ikawa N, Furuzato R, Imanishi N, Kag. Kog. Ronbunshu, 15, 519 (1989)
Gilbert ML, Paulaitis ME, J. Chem. Eng. Data, 31, 296 (1986)
Gmehling J, Onken U, "Vapor-Liquid Equilibrium Data Collection," Chemistry Data Series Vol. 1, part 2a, DECHEMA (1977)
Inomata H, Arai K, Saito S, Ohba S, Takeuchi K, Fluid Phase Equilib., 53, 23 (1989)
Inomata H, Kondo A, Arai K, Saito S, J. Chem. Eng. Jpn., 23, 199 (1990)
Kuk MS, Montagna JC, "Chemical Engineering at Supercritical Fluid Conditions," Chap. 1, p. 101, Ann. Arbor Science Publishers, Ann. Arbor, Michigan (1983)
이윤용, "초임계유체 추출-원리와 응용," 한국화학공학회 하계특별심포지움 Proceeding, 용평 (1986)
Patel NC, Teja AS, Chem. Eng. Sci., 37, 463 (1982)
유영제, 제 4회 생물화공 심포지움 Proceeding, "알코올분리기술," 바이오에너지기술 (1989)
Skjold-Jorgensen S, Fluid Phase Equilib., 16, 317 (1984)
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)
VanLeer RA, Paulaitis ME, J. Chem. Eng. Data, 25, 257 (1980)
Wiebe R, Gaddy VL, J. Am. Chem. Soc., 63, 475 (1941)
Wilson GM, J. Am. Chem. Soc., 86, 127 (1964)

[Referenced By]

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

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

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

[4] Baker LCW, Anderson TF, J. Am. Chem. Soc., 79, 2071 (1957)

[5] Brignole EA, Skjold-Jorgensen S, Fredenslund AA, Application of GC-EOS to Supercritical Fluid Extraction, In: Penninger, J.M.L., Radosz, M., Mchungh, M.A. and Krukonis, V.J.(Editors), "Supercritical Fluid Technology," p. 87 (1985)

[6] Cho JS, Park SK, Lim JS, Kim JD, Lee YY, Chun HS, HWAHAK KONGHAK, 29(1), 111 (1991)

[7] Francis AW, J. Phys. Chem., 58, 1099 (1954)

[8] Furuta S, Ikawa N, Furuzato R, Imanishi N, Kag. Kog. Ronbunshu, 15, 519 (1989)

[9] Gilbert ML, Paulaitis ME, J. Chem. Eng. Data, 31, 296 (1986)

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

[11] Inomata H, Arai K, Saito S, Ohba S, Takeuchi K, Fluid Phase Equilib., 53, 23 (1989)

[12] Inomata H, Kondo A, Arai K, Saito S, J. Chem. Eng. Jpn., 23, 199 (1990)

[13] Kuk MS, Montagna JC, "Chemical Engineering at Supercritical Fluid Conditions," Chap. 1, p. 101, Ann. Arbor Science Publishers, Ann. Arbor, Michigan (1983)

[14] 이윤용, "초임계유체 추출-원리와 응용," 한국화학공학회 하계특별심포지움 Proceeding, 용평 (1986)

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

[16] 유영제, 제 4회 생물화공 심포지움 Proceeding, "알코올분리기술," 바이오에너지기술 (1989)

[17] Skjold-Jorgensen S, Fluid Phase Equilib., 16, 317 (1984)

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

[19] Trebble Ma, Bishnoi PR, Fluid Phase Equilib., 29, 465 (1986)

[20] VanLeer RA, Paulaitis ME, J. Chem. Eng. Data, 25, 257 (1980)

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

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