Asymmetric Heat-Integrated Distillation Column Design by Mathematical Programming Approach
Date Issued
2009
Date
2009
Author(s)
Lu, Hung-Ting
Abstract
Distillation is by far the most applied separation technology, but its low energy efficiency is also recognized as a major drawback. In order to overcome this drawback, various novel ideas and approachES have been proposed in literature. The subject of this work is on the design of internal energy-integrated distillation system.tudies on internally heat-integrated distillation column(HIDiC) are proceeding for many years. HIDiC was proved to be effective in energy saving, but so far only few works addressed about its economic point of view and “asymmetric” structure. This work aims to develop a general model of mixed-integer nonlinear program (MINLP) for HIDiC design where exergy consumption and total annualized cost (TAC) are both taken into account. After the optimization, the results of asymmetric HIDiC are compared with those of conventional distillation column and symmetric HIDiC in the two aspects (exergy consumption and TAC). The follow-up analysis shows how the structure of asymmetric HIDiC to influence the energy efficiency and total cost.
Subjects
HIDiC
MINLP
Optimization
Superstructure
SDGs
Type
thesis
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