Heat integration analysis for an industrial ethylbenzene plant using pinch analysis

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In this study, a heat exchanger network (HEN) for an industrial ethylbenzene plant is retrofitted by pinch analysis. In the ethylbenzene process, ethylbenzene is produced by alkylation of ethylene and benzene, and the whole product is used to produce styrene monomer. From the real operating data, a HEN of the ethylbenzene process is extracted. Analysis of the HEN reveals that the current process is operated efficiently, but there is a possibility to improve the heat exchange in light removal columns. After analysis, an alternative HEN is proposed to save the energy. The alternative HEN is achieved by adding a new heat exchanger and changing operating conditions. It reduces the annual energy cost by 5.6%. In order to achieve it, the capital investment is necessary but the annual cost saving will be enough to recover the cost in less than one year. (c) 2006 Elsevier Ltd. All rights reserved.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2007-04
Language
English
Article Type
Article
Keywords

EXCHANGER NETWORK RETROFIT; CRUDE DISTILLATION; OPPORTUNITIES; OPTIMIZATION; TECHNOLOGY

Citation

APPLIED THERMAL ENGINEERING, v.27, pp.886 - 893

ISSN
1359-4311
DOI
10.1016/j.applthermaleng.2006.09.001
URI
http://hdl.handle.net/10203/92444
Appears in Collection
CBE-Journal Papers(저널논문)
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