Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 32297
Analysis of Heat Exchanger Network of Distillation Unit of Shiraz Oil Refinery

Authors: J. Khorshidi, E. Zare, A.R. Khademi


The reduction of energy consumption through improvements in energy efficiency has become an important goal for all industries, in order to improve the efficiency of the economy, and to reduce the emissions of Co2 caused by power generation. The objective of this paper is to investigate opportunities to increase process energy efficiency at the distillation unit of Shiraz oil refinery in south of Iran. The main aim of the project is to locate energy savings by use of pinch technology and to assess them. At first all the required data of hot and cold streams in preheating section of distillation unit has been extracted from the available flow sheets and then pinch analysis has been conducted. The present case study is a threshold one which does not need any utilities. After running range, targeting several heat exchanger networks were designed with respect to operating conditions and different ΔTmin. The optimal value of ΔTmin was calculated to be 22.3 °C. Based on this optimal value, there will be 5% reduction in annual total cost of heat exchanger network.

Keywords: Pinch technology, heat exchanger network, operating cost.

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1469


[1] B. Linnhoff, D. R. Vredeveld, “Pinch technology has come of age,” Chemical Engineering Progress, 1984, pp. 33-40.
[2] R. Smith, “Chemical process design and integration,” New York: McGraw Hill, 2005, ch 15-19.
[3] G. T. Polley, M. H. Panjeh Shahi, M. P. Nunez, “Pressure drop considerations in the retrofit of heat exchanger networks,” Trans I Chem., 1990, vol. E68, pp. 211–220.
[4] G. T. Polley, M. H. Panjeh Shahi, “Interfacing heat exchanger network synthesis and detailed heat exchanger design,” Trans I Chem., 1991, vol. E69, pp. 445–457.
[5] J. De Ruyck, V. Lavric, D. Baetens, V. Plesu, “Broadening the capabilities of pinch analysis through virtual heat exchanger networks,” Energy Convers Manage, 2003, vol. 44(14), pp. 2321–2329.
[6] Y. Wang, J. Du, J. Wu, G. He, G. Kuang, X. Fan, et al., “Application of total process energy-integration in retrofitting an ammonia plant,” Apply Energy, 2003, vol. 76, pp. 467–480.
[7] B. Linnhoff, E. Hindmarsh, “The pinch design method of heat exchanger networks,” Chem Eng Sci, 1983, vol. 38(5), pp. 745–763.
[8] B.A. Al-Riyami, J. Klemes, S. Perry, “Heat integration retrofit analysis of a heat exchanger network of a fluid catalytic cracking plant,” Applied Thermal Engineering, 2001, vol. 21, pp. 1449–1487.
[9] B. Linnhoff, D.W. Townsend, D. Boland, G.F. Hewitt, B.E.A. Thomas, A.R. Guy, R.H. Marsland, “A User Guide on Process Integration for the Efficient Use of Energy,” Institution of Chemical Engineers, 1996.
[10] L. Matijaseviæ, H. Otmaeiæ, “Energy recovery by pinch technology,” Applied Thermal Engineering, 2002, vol. 22, pp. 477–484.