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Received November 15, 2001
Accepted January 16, 2002
articles 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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Approximate Design of Fully Thermally Coupled Distillation Columns

Dept. of Chem. Eng., Dong-A University, Busan 604-714, Korea 1Energy-Efficient Chemical Systems Group, National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8565, Japan 2Dept. of Chemical Engineering, Pusan National University, Busan 609-735, Japan
Korean Journal of Chemical Engineering, May 2002, 19(3), 383-390(8), 10.1007/BF02697144
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Abstract

An approximate design procedure for fully thermally coupled distillation columns (FTCDCs) is proposed and applied to example ternary systems. The procedure gives a fast solution of structural and operation design for a preliminary study of the FTCDC. The structural information resolves the design difficulty, caused from the interlinking streams of the column, which is encountered when a conventional design procedure is implemented. The design outcome explains that how the thermodynamic efficiency of the FTCDC is higher than that of a conventional two-column system and how the system of a separate prefractionator is different from a dividing wall structure. From the design result of three example systems with three different feed compositions, the useful performance of the proposed scheme is proved. In addition, the structural design of the FTCDC gives better understanding of the system and_x000D_ leads to high efficiency design of the column.

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