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등온 및 정압기액평형의 상관성

Relation between Isothermal and Isobaric Vapor-Liquid Equilibrium

임진남 곽철

Rhim JN Kwak C

HWAHAK KONGHAK, August 1980, 18(4), 273-284(12), NONE

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Abstract

1,2 Dichloroethane-n-Heptane, 1,2 Dichloroethane-n-Butanol 및 n-Heptane-n-Butanol 의 3개의 2성분계에 대한 25 ℃, 35 ℃, 45 ℃, 55 ℃, 65 ℃, 75 ℃에서의 전증기압을 측정하였다. 측정한 압력데이터로부터 Redlich-Kister식과 Wilson식을 사용하여 평형증기의 조성을 구하였으며 이로부터 정압기액평형치를 추산했다. One Parameter Wilson식을 사용하여 1,2 Dichloroethane-n-Heptane-n-Butanol의 3성분계에 대한 정압기액 평형치를 추산했다.

Isothermal vapor-liquid equilibria were measured for the binary systems, 1,2 dichloroethane-n-heptane, 1,2 dichloroethane-n-butanol, and n-heptane-n-butanol, at 25 ℃, 35 ℃, 45 ℃, 55 ℃, 65 ℃ and 75 ℃ using the total pressure method. Vapor compositions were obtained by the Wilson equation and the Redlich-Kister equation. For these binary systems, isobaric vapor-liquid equilibria were estimated by cross plotting isothermal vapor-liquid equilibria data which were obtained from the total pressure method. Also isobaric vapor-liquid equilibria in the ternary system of 1,2 dichloroethane-n-heptane-n-butanol were estimated from the results for the corresponding binary systems by using one parameter Wilson equation. The predicted data were found to be in a good agreement with experimental data.

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