Applied Chemistry, Vol.7, No.2, 615-618, October, 2003
아크릴로니트릴 제조공정에서 혼합용매를 이용한 아세토니트릴 회수에 관한 연구
A Study on the Recovery of Acetonitrile in Manufacturing Process of Acrylonitrile using Toluene-EAc Mixture
We studied on the phase equilibria of quaternary liquid-liquid extraction system containing acetonitrile-water-binary solvent at 25 ℃, 1 atm, Ethyl acetate-Toluene was 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 acetonitrile 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 1.45 mole%.