Design of internally heat-integrated distillation column (HIDiC): Uniform heat transfer area versus uniform heat distribution
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Publication Details
Author list: Suphanit B.
Publisher: Elsevier
Publication year: 2010
Journal: Energy (0360-5442)
Volume number: 35
Issue number: 3
Start page: 1505
End page: 1514
Number of pages: 10
ISSN: 0360-5442
Languages: English-Great Britain (EN-GB)
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Abstract
The internally heat-integrated distillation column (HIDiC) is a complex column configuration which is more energy efficient than the equivalent conventional column or the distillation column with direct vapor recompression scheme (VRC). Exploiting the heat integration between two diabatic sections operating at different pressures of the HIDiC can greatly enhance the energy performance of the system. On the other hand, the design and optimization of HIDiC is more difficult than those of the conventional distillation column or the column with VRC. The former involves many design parameters, and the most critical one is the pressure ratio between both diabatic sections. However, the heat distribution along the diabatic sections is also another significant factor not yet thoroughly investigated. In this work, two typical distribution schemes, i.e. uniform heat transfer area and uniform heat distribution, are studied by applying a novel approach to solve the simulation problem in Aspen Plus 2004.1. The comparison of both distributing schemes is discussed via two widely-used case studies, namely benzene-toluene separation and propylene-propane splitter. ฉ 2009 Elsevier Ltd. All rights reserved.
Keywords
Heat-integrated distillation column, HIDiC, Uniform heat distribution, Uniform heat transfer area