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Exergetic analysis of distillation processes—A case study

Author

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  • Araújo, Antonio B.
  • Brito, Romildo P.
  • Vasconcelos, Luís S.

Abstract

The concept of exergy has been introduced to establish a universal standard for quality and efficient use of energy. In this work, applications of this concept to compression, heat exchange, and separation processes, in addition to the computation of their irreversibility rate and thermodynamic efficiency, are considered. An industrial case study on the purification of 1,2-ethylenedichloride (EDC) in a high-purity distillation column is presented. Due to its large throughput, this distillation column consumes a large amount of thermal energy (steam to the reboiler) and in order to reduce the energy requirements without large process modifications, a new configuration using a vapour compression heat pump is proposed which yields considerable improvement in the use of energy. Both configurations were implemented using the commercial simulator Aspen Plus™; the results of the original configuration were validated with data extracted from the plant. The objective of this work was to compare the original configuration and the new proposed one, from a thermodynamic approach. Furthermore, two forms of process thermodynamic analysis based on the concept of exergy were applied to the new proposed configuration.

Suggested Citation

  • Araújo, Antonio B. & Brito, Romildo P. & Vasconcelos, Luís S., 2007. "Exergetic analysis of distillation processes—A case study," Energy, Elsevier, vol. 32(7), pages 1185-1193.
    • Handle: RePEc:eee:energy:v:32:y:2007:i:7:p:1185-1193
    DOI: 10.1016/j.energy.2006.07.003
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    Cited by:

    1. Kiss, Anton A. & Flores Landaeta, Servando J. & Infante Ferreira, Carlos A., 2012. "Towards energy efficient distillation technologies – Making the right choice," Energy, Elsevier, vol. 47(1), pages 531-542.
    2. Teles dos Santos, Moisés & Park, Song Won, 2013. "Sustainability and biophysics basis of technical and economic processes: A survey of the reconciliation by thermodynamics," Renewable and Sustainable Energy Reviews, Elsevier, vol. 23(C), pages 261-271.
    3. Nguyen, Nghi & Demirel, Yaşar, 2010. "Retrofit of distillation columns in biodiesel production plants," Energy, Elsevier, vol. 35(4), pages 1625-1632.
    4. Bahadori, Alireza & Vuthaluru, Hari B., 2010. "Simple equations to correlate theoretical stages and operating reflux in fractionators," Energy, Elsevier, vol. 35(3), pages 1439-1446.
    5. Fadare, D.A. & Nkpubre, D.O. & Oni, A.O. & Falana, A. & Waheed, M.A. & Bamiro, O.A., 2010. "Energy and exergy analyses of malt drink production in Nigeria," Energy, Elsevier, vol. 35(12), pages 5336-5346.
    6. Osuolale, Funmilayo N. & Zhang, Jie, 2016. "Energy efficiency optimisation for distillation column using artificial neural network models," Energy, Elsevier, vol. 106(C), pages 562-578.
    7. Nguyen, Nghi & Demirel, Yaşar, 2011. "Using thermally coupled reactive distillation columns in biodiesel production," Energy, Elsevier, vol. 36(8), pages 4838-4847.
    8. Bessa, Larissa C.B.A. & Batista, Fabio R.M. & Meirelles, Antonio J.A., 2012. "Double-effect integration of multicomponent alcoholic distillation columns," Energy, Elsevier, vol. 45(1), pages 603-612.
    9. Cui, Chengtian & Qi, Meng & Zhang, Xiaodong & Sun, Jinsheng & Li, Qing & Kiss, Anton A. & Wong, David Shan-Hill & Masuku, Cornelius M. & Lee, Moonyong, 2024. "Electrification of distillation for decarbonization: An overview and perspective," Renewable and Sustainable Energy Reviews, Elsevier, vol. 199(C).
    10. Chen, Ting & Zhang, Bingjian & Chen, Qinglin, 2014. "Heat integration of fractionating systems in para-xylene plants based on column optimization," Energy, Elsevier, vol. 72(C), pages 311-321.
    11. Sun, Jinsheng & Wang, Fan & Ma, Tingting & Gao, Hong & Liu, Yanzhen & Cai, Fang, 2012. "Exergy analysis of a parallel double-effect organosilicon monomer distillation scheme," Energy, Elsevier, vol. 47(1), pages 498-504.
    12. Hajjaji, Noureddine & Pons, Marie-Noëlle & Houas, Ammar & Renaudin, Viviane, 2012. "Exergy analysis: An efficient tool for understanding and improving hydrogen production via the steam methane reforming process," Energy Policy, Elsevier, vol. 42(C), pages 392-399.
    13. Sun, Jinsheng & Dai, Leilei & Shi, Ming & Gao, Hong & Cao, Xijia & Liu, Guangxin, 2014. "Further optimization of a parallel double-effect organosilicon distillation scheme through exergy analysis," Energy, Elsevier, vol. 69(C), pages 370-377.
    14. Khalili-Garakani, Amirhossein & Ivakpour, Javad & Kasiri, Norollah, 2016. "Evolutionary synthesis of optimum light ends recovery unit with exergy analysis application," Applied Energy, Elsevier, vol. 168(C), pages 507-522.
    15. Fábrega, F.M. & Rossi, J.S. & d'Angelo, J.V.H., 2010. "Exergetic analysis of the refrigeration system in ethylene and propylene production process," Energy, Elsevier, vol. 35(3), pages 1224-1231.
    16. Sun, Jinsheng & Wang, Fan & Ma, Tingting & Gao, Hong & Wu, Peng & Liu, Lili, 2012. "Energy and exergy analysis of a five-column methanol distillation scheme," Energy, Elsevier, vol. 45(1), pages 696-703.

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