Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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A Study on the Recovery of Acetonitrile in the Process of Acrylonitrile

Acrylonitrile 제조공정에서 Acstonitrile의 회수에 관한 연구

  • Lee, Jin-Woo (Dept. of Chem. Eng., College of Eng., Dong-A Univ.) ;
  • Park, Dong-Won (Dept. of Chem. Eng., College of Eng., Dong-A Univ.)
  • 이진우 (동아대학교 공과대학 화학공학과) ;
  • 박동원 (동아대학교 공과대학 화학공학과)
  • Received : 1994.07.18
  • Accepted : 1994.09.05
  • Published : 1994.12.01
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Abstract

In process of manufacturing acrylonitrile azeotrope of acetonitrile-water was come into being as by-product. For the purpose of recovering acetonitrile through solvent extraction process benzene, toluene, o-xylene, ethylacetate and monochlorobenzene as solvents were selected in order to separate acetonitrile from azeotrope of acetonitrile-water. In this study liquid-liquid equilibrium data were determined and consistency of the experimental data was investigated. The tie line and plait point for solvent(1)-water(2)-acetonitrile(3) system were determined at $25^{\circ}C$. The parameters in the NRTL, UNIQUAC and modified UNIQUAC model were predicted, distribution coefficient and selectivity of each solvent were determined respectively.

Acrylonitrile 제조시 부산물로 생성되는 acetonitrile-water 공비혼합물에서 용매추출하여 acetonitrile을 회수하기 위하여 benzene, toluene, o-xylene, ethylacetate 및 monochlorobenzene을 용매로 선택하여 $25^{\circ}C$ 에서 solvent(1)-water(2)-acetonitrile(3)계의 액-액 평형데이타를 구하였으며, 그 실험데이타의 건전성을 조사하였고, tie line과 plait point조성을 결정하였다. 또한 NRTL, UNIQUAC 및 modified UNIQUAC모델식에 적용하여 parameter를 추산하고 각 용매에 대한 분배계수와 선택도를 결정하였다.

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