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Language: korean

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received July 15, 2004
Accepted October 6, 2004

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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3기의 증류탑을 이용한 에너지 절약형 증류탑의 헥산공정에의 응용

Application of An Energy-Efficient Distillation Systemusing Three Columns to Hexane Process

김영한^† 황규석¹

Young Han Kim^† Kyu Suk Hwang¹

동아대학교 화학공학과, 604-714 부산시 사하구 하단동 840 ¹부산대학교 화학공학과, 609-735 부산시 금정구 장전동 산 30

Department of Chemical Engineering, Dong-A University, 840, Hadan-dong, Saha-gu, Busan 604-714, Korea ¹Department of Chemical Engineering, Pusan National University, San 30, Jangjeon-dong, Geumjeong-gu, Busan 609-735, Korea

Korean Chemical Engineering Research, February 2005, 43(1), 39-46(8), NONE Epub 3 March 2005

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Abstract

에너지 절약형 증류시스템인 열복합 증류탑의 에너지 사용량은 적으나 운전이 어렵기 때문에 실제공정에 활용이 잘되지 않고 있어 에너지 사용은 적으면서 운전상이 개선된 3탑 증류 시스템을 제안하여 상업적인 실제공정인 헥산제조공정에 활용할 때의 에너지 절약성능과 실제 활용에서 생겨나는 문제에 대해 조사하였다. 에너지 회수구조를 활용할 경우, HYSYS를 이용한 시뮬레이션의 결과 기존의 2탑 증류 시스템에 비해 18% 에너지 절감효과가 있음을 알았으며 2탑 증류시스템에 비해 제어루프의 수는 증가되지만 3가지 제품의 조성 조절이 쉽고 각 탑의 운전압력을 쉽게 조절할 수 있는 장점을 갖고 있다.

Though a fully thermally coupled distillation column-an energy efficient distillation system-consumes less energy, it is not widely implemented in practice due to its operational difficulty. A 3-column distillation system having improved operability is proposed here, and its energy saving performance and application related issues are investigated from the implementation result to a practical hexane process. When an energy integration is employed, the proposed system requires 18% less energy than a conventional 2-column system, which is found from the HYSYS simulation. Though more control loops than the 2-column system are required, the proposed system has better controllability of product compositions and the pressure control of the system is easier.

Keywords

Distillation Ternary Separation Energy-Efficient Distillation Hexane Process

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