Experiences from using heat integration software to determine retrofit opportunities within a refinery process |
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Authors: | Michelle?A?Phipps Email author" target="_blank">Andrew?F?A?HoadleyfEmail author |
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Affiliation: | (1) The Department of Chemical Engineering, Monash University, P.O. Box 36, 3800 Vic., Australia |
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Abstract: | Heat integration techniques can be used to optimize the energy requirement for both new and retrofit plant designs. Software
tools for identifying retrofit options are becoming available. This paper reports our experiences from using heat exchanger
network (HEN) optimization software for a retrofit case study of an oil refinery process. The HEN optimization software was
used to automate the search for the most beneficial retrofit designs following the twostage process proposed by Asante and
Zhu. The software provided three potential retrofit designs. Results from this analysis were used as the basis of a rigorous
mass and energy balance simulation of the plant. The simulation corroborated the energy savings, but there were some important
differences. The simulation required 20% more heat exchange area. Furthermore, the retrofit design involving one topology
change was shown to be less economic than an alternative design. These differences are discussed and a revised methodology
is proposed. |
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Keywords: | Heat Integration Retrofit Design Heat Exchanger Networks Dewaxing Energy Recovery |
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