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등온하의 3성분계에 대한 상평형
Isothermal Phase Equilibria for the Ternary System(Methanol(1)-n-Hexane(2)-n-Heptane(3))
HWAHAK KONGHAK, April 1985, 23(2), 89-96(8), NONE
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Abstract
20 ℃, 30 ℃ 40 ℃에서의 n-Hexane（2）-N-Heptane(3)계와 40 ℃에서의 n-Hexane(2)-Methanol(1)계의 완전혼합 농도범위에 대하여는 용액의 건조성에 따르는 전압을 측정하였고, 20 ℃, 30 ℃에서의 Methanol(1)-n-Hexane(2)계와 20 ℃, 30 ℃, 40 ℃에서의 Methanol(1)-n-Heptane(3)계의 부분혼합 농도범위에 대하여는 상호용해도를 측정하였다.
이와같은 측정치로부터 이성분계에 대한 액상의 NRTL파라미터를 구하여 이를 3성분계의 액-액평형을 예측하는데 사용하였다.
또한 예측된 삼성분계의 액-액평형치는 2.30 %이내의 편의로 실측치와 양호하게 일치하였다.
이와같은 측정치로부터 이성분계에 대한 액상의 NRTL파라미터를 구하여 이를 3성분계의 액-액평형을 예측하는데 사용하였다.
또한 예측된 삼성분계의 액-액평형치는 2.30 %이내의 편의로 실측치와 양호하게 일치하였다.
The total pressures were measured for the total compositions range of the completely miscible binary system, n-hexane（2）-n-heptane(3) at the constant temperatures of 20 ℃, 30 ℃ 40 ℃, n-hexane(2)-methanol(1) at 40 ℃.
For the partially miscible composition range of binary systems, methanol（1）-n-hexane(2) at 20 ℃, 30 ℃ and methanol(1)-n-heptane(3), at 20 ℃, 30 ℃, 40 ℃, the mutual solubilities were measured.
From these data, the binary NRTL parameters of the liquid phases were calculated and the NRTL model was extended to predict the ternary liquid-liquid equilibria system, and the predicted liquid-liquid equilibria showed good agreement with experimental data within the maximum error of 2.30 %.
For the partially miscible composition range of binary systems, methanol（1）-n-hexane(2) at 20 ℃, 30 ℃ and methanol(1)-n-heptane(3), at 20 ℃, 30 ℃, 40 ℃, the mutual solubilities were measured.
From these data, the binary NRTL parameters of the liquid phases were calculated and the NRTL model was extended to predict the ternary liquid-liquid equilibria system, and the predicted liquid-liquid equilibria showed good agreement with experimental data within the maximum error of 2.30 %.
