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연속열역학을 이용한 다성분 혼합물의 기-액 상평형 계산
Calculation of Vapor-Liquid Equilibria of Multicomponent Mixtures Using Continuous Thermodynamics
HWAHAK KONGHAK, December 1991, 29(6), 654-662(9), NONE
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Abstract
다성분 혼합물의 기-액 상평형을 계산하기 위해 연속열역학을 이용하였으며, 이를 n-alkane, aromatic oil 및 초임계 탄산가스로 추출된 lemon oil 혼합물에 각각 적용시켜 계산결과를 비교 검토하였다. 복합혼합물을 정의하기 위하여 정규분포함수를 사용하였고 변수로 비점을 채택하였으며 전체성분을 불연속성분과 연속성분의 합인 semi-continuous 혼합물로 처리하였다. 여러 가지 3차 상태방정식 중에서 Soave-Redlich-Kwong(SRK)식과 Peng-Robinson(PR) 식을 이용하였으며, N-alkane 및 aromatic oil의 경우 연속성분을 1개의 군으로 처리한 반면에 초임계 탄산가스로 추출한 lemon oil 혼합물의 연속성분은 2개의 군으로 정의하여 기-액 상평형을 계산하였다.
Continuous thermodynamics is adopted in order to calculate the vapor-liquid equilibria of multi-component mixtures and the results are analyzed by applying to n-alkanes, aromatic oils and lemon oil mixtures extracted with supercritical carbon dioxide. In this work the mixtures are treated as semi-continuous whose distribution variable for the continuous fraction is normal boiling temperature. The vapor-liquid equilibrium calculations are performed using the Soave-Redlich-Kwong(SRK) and the Peng-Robinson(PR) equations of states by defining one continuous fraction for n-alkanes and aromatic oils and two continuous fractions for lemon oil mixtures.
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Radosz M, Cotterman RL, Prausnitz JM, Ind. Eng. Chem. Res., 26, 731 (1987)
Willman BT, Teja AS, AIChE J., 32, 2067 (1986)
Willman BT, Teja AS, Ind. Eng. Chem. Res., 26, 948 (1987)
Willman BT, Teja AS, Ind. Eng. Chem. Res., 26, 953 (1987)
Bowman JR, Ind. Eng. Chem., 41, 2004 (1949)
Edmister WC, Ind. Eng. Chem., 47, 1685 (1955)
Aris R, Gavalas GR, Trans. R. Soc. London Ser. A, 260, 351 (1966)
Hoffman EJ, Chem. Eng. Sci., 23, 957 (1968)
Gal-Or B, Cullinan HT, Galli R, Chem. Eng. Sci., 30, 1085 (1975)
Kehlen H, Ratzsch MT, Bergman J, AIChE J., 31, 1136 (1985)
Salacuse JJ, Stell G, J. Chem. Phys., 77, 3714 (1982)
Han SJ, Lin HM, Chao KC, Chem. Eng. Sci., 43, 2327 (1988)
Anderko A, Fluid Phase Equilib., 61, 145 (1990)
Prausnitz JM, Lichtenthaler RN, deAzevedo EG, "Molecular Thermodynamics of Fluid-Phase Equilibria," 2nd ed., Prentice-Hall, Engle Wood Cliffs, NJ (1986)
Twu CH, Fluid Phase Equilib., 16, 137 (1984)
Reid RC, Prausnitz JM, Poling BE, "The Properties of Gases and Liquids," 4th Ed., McGraw-Hill, New York, NY (1988)
Coppella SJ, Barton P, ACS Symp. Ser., 329, 202 (1987)
Kim HS, M.S. Thesis, Univ. of Ulsan, Ulsan, Korea (1990)
Bergman DF, Tek MR, Katz DL, "Retrograde Condensation in Natural Gas Pipelines," Am. Gas. Assn., Arlington, VA (1975)
Ramanujam S, Leipziger S, Well SA, Ind. Eng. Chem. Process Des. Dev., 24, 107 (1985)
