Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Study on Control Efficiency of Fully Thermally Coupled Distillation Column for BTX Separation

BTX 분리용 열복합 증류탑의 제어성능에 관한 연구

  • 김미희 (부산대학교 화학공학과) ;
  • 박창원 (부산대학교 화학공학과) ;
  • 이주영 (울산과학대학 환경화학공업과) ;
  • 김영한 (동아대학교 화학공학과) ;
  • 황규석 (부산대학교 화학공학과)
  • Received : 2010.05.20
  • Accepted : 2010.05.24
  • Published : 2010.12.31
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Abstract

The fully thermally coupled distillation columns(FTCDC) are thermodynamically more efficient than conventional columns. Despite these advantages, industry has been reluctant to use FTCDC. This can be largely attributed to the lack of established design procedures and column operability. In this study, the $3{\times}3$control structure was applied to control the FTCDC which was simulated using Aspen HYSYS on the possible control structure of 4 kinds and control performance was investigated. As the result of dynamic simulations, one of the proposed structures had better controllability of product compositions and control efficiency was evaluated.

기존의 증류탑에 비해 열역학적으로 효율적인 열복합 증류탑은 그 설계와 운전의 어려움으로 인하여 실제 산업 현 장에서 그 사용이 제한적이었다. 본 연구에서는 열복합 증류탑을 제어하기 위한 $3{\times}3$ 제어구조를 적용하여 4가지의 가능한 제어구조를 탐색하고, Aspen Hysys를 이용하여 동적모사 실험을 수행하여 동적거동을 비교하고 제어 가능성 평가를 수행하였다. 그 결과 제안된 4가지의 가능한 제어구조 중 제품의 조성제어가 가능한 제어구조를 찾을 수 있었으며, 제어 성능 테스트를 수행하였다.

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References

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