용매-물-피리딘계에 대한 삼성분계의 액-액 평형에서 염효과

서진기; 이진우; 박동원

HWAHAK KONGHAK, Vol.30, No.5, 622-630, October, 1992

Export Citation

용매-물-피리딘계에 대한 삼성분계의 액-액 평형에서 염효과

Salt Effect in Liquid-Liquid Equilibrium for Ternary Systems with Solvent-water-Pyridine

서진기, 이진우, 박동원

초록

25℃에서 NaCl염 수용액을 5%, 10%, 15%의 수용액으로 제조하여 solvent(aniline, ethyl acetate, n-butyl ace- tate)-NaCl salt solution-pyridine계에 대하여 용해도곡선과 대응선을 측정하였다. 대응선 계산치를 예측하기 위하여 대응선 실험치를 NRTL 모델식에 상호연관시켜 모델 내의 파라미터와 대응선 계산치를 구하였다. 또한 대응선 실험데이타의 건전성과 염농도 증가에 따른 액-액 평형에 대한 염첨가 효과를 고찰하였다.

The experimental binodal curves and tie lines were determined for solvent-NaCl salt solution-pyridine systems at 25℃, and those tie line data were used to test thermodynamic consistency. The NaCl salt solutions were prepared with aqueous solution of 5%, 10% and 15% NaCl salts respectively. The experi-mental tie line data were correlated with the NRTL model, and the parameters and the calculated values of tie line were predicted. The effect of salt addition on liquid-liquid equilibria was also studied along with the increment of salt concentration.

[References]

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[2] Magnussen T, Ind. Eng. Chem. Process Des. Dev., 20, 331 (1981)

[3] Chen CC, Britt HI, Evans LB, AIChE J., 28, 588 (1982)

[4] Brandani V, Chianese A, Rossi M, J. Chem. Eng. Data, 30, 27 (1985)

[5] Mukhopadhyay M, Pathak AS, Ind. Eng. Chem. Process Des. Dev., 25, 733 (1986)

[6] Chen CC, Evans LB, AIChE J., 32, 44 (1986)

[7] Jaques D, Further WF, Ind. Eng. Chem. Fundam., 13, 238 (1974)

[8] Sada E, Kito S, Ito Y, J. Chem. Eng. Data, 20, 373 (1975)

[9] Pitzer K, J. Am. Chem. Soc., 102, 2902 (1980)

[10] Sander B, Fredenslund A, Rasmussen P, Chem. Eng. Sci., 41, 1171 (1986)

[11] Sander B, Rasmussen P, Fredenslund A, Chem. Eng. Sci., 41, 1185 (1986)

[12] Eisen EO, Joffe J, J. Chem. Eng. Data, 11, 480 (1966)

[13] Desai ML, Eisen EO, J. Chem. Eng. Data, 16, 200 (1971)

[14] Shah D, Tiwari KK, J. Chem. Eng. Data, 26, 375 (1981)

[15] Seo JG, Lee JW, Park DW, HWAHAK KONGHAK, 30(1), 89 (1992)

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

[17] Othmer DF, White RE, Trueger E, Ind. Eng. Chem., 33, 1240 (1941)

[18] Park DW, Ph.D. Dissertation, Hanyang-Univ., Seoul, Korea (1987)

[19] Choi JS, Rhim JN, HWAHAK KONGHAK, 24(3), 185 (1986)

[20] Ishida K, Bull. Chem. Soc. Jpn., 33, 693 (1960)

[21] Othmer DF, Tobias PE, Ind. Eng. Chem., 34, 693 (1942)

[22] Saravanan G, Srinivasan D, J. Chem. Eng. Data, 30, 166 (1985)

[23] Ramasubramanian J, Srinivasan D, Chem. Eng. Commun., 19, 335 (1983)

[24] Varhegyi G, Eon CH, Ind. Eng. Chem. Fundam., 16, 182 (1977)