Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Simulation and Optimization Study on the Pressure-Swing Distillation of Ethanol-Benzene Azeotrope

Ethanol-Benzene 공비혼합물의 분리를 위한 압력변환 증류공정의 전산모사

  • Park, Hoey Kyung (Department of Chemical Engineering, Kongju National University) ;
  • Kim, Dong Sun (Department of Chemical Engineering, Kongju National University) ;
  • Cho, JungHo (Department of Chemical Engineering, Kongju National University)
  • Received : 2014.11.06
  • Accepted : 2014.12.31
  • Published : 2015.08.01
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Abstract

In the present study, modelling and optimization of ethanol-benzene separation process were performed using pressure-swing distillation. Order to obtain a reliable results, vapour-liquid equilibrium (VLE) experiments of ethanol-benzene binary system were performed. The parameters of thermodynamic equation were determined using experimental data and the regression. The pressure-swing distillation process optimization was performed to obtain high purity ethanol and high purity benzene into a low-high pressure columns configuration and a high-low pressure columns configuration. The heat duty values of the reboiler from simulation were compared, and the process was optimized to minimize the heat duty.

본 연구에서는 압력변환 증류공정(Pressure-Swing Distillation, PSD)을 사용하여 에탄올-벤젠 공비혼합물의 분리공정에 대한 전산모사 및 공정 최적화를 수행하였다. 신뢰성 있는 공정 최적화 결과를 도출하기 위해 에탄올-벤젠 이성분계에 대한 기-액 상평형 실험을 수행한 후, 열역학 모델식의 회귀분석을 통해 이성분계 상호작용 매개변수를 도출하였다. 저압-고압 컬럼 배열, 고압-저압 컬럼 배열을 통한 압력변환 증류공정을 적용하여 고순도 에탄올과 고순도 벤젠을 얻기 위한 공정 최적화를 수행하였으며, 재비기의 heat duty량을 비교하였다.

Keywords

References

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