Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Application of Energy-Efficient Distillation System in Ethanol Process

에너지 절약형 증류시스템의 에탄올 제조공정에의 응용

  • 이문용 (영남대학교 디스플레이화학공학부) ;
  • 김영한 (동아대학교 화학공학과)
  • Received : 2008.02.12
  • Accepted : 2008.04.08
  • Published : 2008.10.31
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Abstract

A new ethanol dehydration process utilizing a thermally coupled distillation column is proposed to reduce the energy requirement of the existing dehydration processes. An entrainer of benzene is used in the proposed system having the column profile similar to the equilibrium composition profile for the maximum distillation column efficiency, and the feed composition is arranged to close to the boundary of different distillation regions. It is found that the proposed distillation system gives some 18% of energy saving over the existing process. In addition, design guidelines are suggested for other azeotropic distillation process.

열복합 증류탑을 활용하여 기존의 에탄올 농축공정보다 에너지 사용량을 절감한 새로운 에탄올 농축공정을 제안하였다. 벤젠을 분리제로 사용한 제안된 증류 시스템은 증류곡선이 평형농도 곡선과 유사하게 분포되도록 설계되었으며, 증류영역의 경계에 가까운 원료 조성을 가지도록 설계하여 최대의 증류효율을 얻도록 구성하였다. 본 연구의 증류시 스템은 기존의 농축시스템에 비해 약 18%의 에너지 절감효과를 얻을 수 있었다. 또, 여타의 유사한 공비증류 공정에 활용할 수 있는 설계방안을 제시하였다.

Keywords

Acknowledgement

Supported by : 한국학술진흥재단

References

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