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2-Propanol 수용액을 포함한 4성분계의 액-액 평형
Liquid-Liquid Equilibria for Quaternary Systems Containing 2-Propanol Aqueous Solution
HWAHAK KONGHAK, October 1997, 35(5), 698-704(7), NONE
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Abstract
25℃에서 2-propanol-water-binary solvent로 이루어진 4성분 액-액 추출계의 상평형에 대하여 연구하였다. MIBK-butylacetate와 ethyl acetate-toluene을 혼합용매로 사용하였으며, 수용액으로부터 2-propanol을 추출함에 있어서 혼합용매 사용의 효과를 고찰하기 위하여 각 4성분계에 대한 용해도 곡선, tie-line, 분배도와 선택도를 측정하였다. 또한 실험에 의한 tie-lline 데이터를 UNIFAC 모델식에 의해 예측된 값들과 비교하였으며, UNIFAC 모델식이 본 실험에 설정된 4성분계에 대하여 3.16 mole %의 평균 RMSD 범위내에서 tie-line의 예측이 가능함을 알 수 있었다.
We studied on the phase equilibria of quaternary liquid-liquid extraction system composed 2-propanol-water-binary solvent at 25℃. MIBK-butyl acetate and ethyl acetate-toluene were used as binary solvents. Binodal curve, tie-line, distribution and selectivity for each quaternary system have been determined in order to investigate the effect of using binary solvent in extracting 2-propanol from aqueous solution. And these experimental tie-line data were also compared with the values predicted by UNIFAC model. It was shown that UNIFAC model is capable of predicting the tie-line in these quaternary systems within an average RMSD of 3.16 mole %.
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References
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Salem AB, Hamad EZ, Fluid Phase Equilib., 108(1-2), 231 (1995)
Bakr A, Salem SH, Hamad EZ, Alnaafa MA, Ind. Eng. Chem. Res., 33(3), 689 (1994)
Nagata I, Tamura K, J. Chem. Eng. Data, 41(4), 873 (1996)
Olaya MM, Garcia AN, Marcilla A, J. Chem. Eng. Data, 41(4), 910 (1996)
Fredenslund A, "Vapor-Liquid Equilibria Using UNIFAC," Elsevier, Amsterdam (1977)
Gupte PA, Ind. Eng. Chem. Res., 26, 2036 (1987)
Larsen BL, Ind. Eng. Chem. Res., 26, 2274 (1987)
Magnussen T, Ind. Eng. Chem. Process Des. Dev., 20, 331 (1981)
Treybal RE, "Liquid Extraction," McGraw-Hill, New York (1963)
Haddad PO, Edmister WC, J. Chem. Eng. Data, 17, 275 (1972)
Higashiuchi H, Sakuragi Y, Nagatani M, Aral Y, J. Chem. Eng. Data, 37, 277 (1992)
