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Optimization of Energy Consumption in Sequential Distillation Column

Authors: M.E. Masoumi, S. Kadkhodaie

Abstract:

Distillation column is one of the most common operations in process industries and is while the most expensive unit of the amount of energy consumption. Many ideas have been presented in the related literature for optimizing energy consumption in distillation columns. This paper studies the different heat integration methods in a distillation column which separate Benzene, Toluene, Xylene, and C9+. Three schemes of heat integration including, indirect sequence (IQ), indirect sequence with forward energy integration (IQF), and indirect sequence with backward energy integration (IQB) has been studied in this paper. Using shortcut method these heat integration schemes were simulated with Aspen HYSYS software and compared with each other with regarding economic considerations. The result shows that the energy consumption has been reduced 33% in IQF and 28% in IQB in comparison with IQ scheme. Also the economic result shows that the total annual cost has been reduced 12% in IQF and 8% in IQB regarding with IQ scheme. Therefore, the IQF scheme is most economic than IQB and IQ scheme.

Keywords: Optimization, Distillation Column Sequence, Energy Savings

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1331925

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References:


[1] M. Gadalla, L. Jimenez, Z. Olujic, P.J. Jansens, "A thermo-hydraulic approach to conceptual design of an internally heat-integrated distillation column (i- HIDiC)," Computers and Chemical Engineering, vol. 31, pp. 1346-1354, 2007.
[2] C. Hernandez-Gaona, S. Hernandez, "Comparison of energy consumptions and total annual costs between heat integrated and thermally linked distillation sequences," Chem Biochem Eng Q, Vol. 18(2), pp. 137-143, 2004.
[3] M. Khalifa, M. Emtir, "Rigorous optimization of heat-integrated and Petlyuk column distillation configurations based on feed conditions," Clean Technology Environment Policy, vol. 11, pp. 107-113, 2009.
[4] E. Rev, M. Emtir, Z. Szitkai, P. Mizsey, Z. Fonyo, "Energy savings of integrated and coupled distillation systems," Computers and Chemical Engineering, vol. 25, pp. 119-140, 2001.
[5] M. Emtir, E. Rev, Z. Fonyo, "Rigorous simulation of energy integrated and thermally coupled distillation schemes for ternary mixture," Applied Thermal Engineering, vol. 21, pp. 1299-1317, 2001.
[6] O. Annakou, P. Mizsey, "Rigorous Comparative Study of Energy- Integrated Distillation Schemes," Ind. Eng. Chem. Res, vol. 35, pp. 1877-1885, 1996.
[7] M. Gadalla, M. Jobson, R. Smith, "Shortcut Models for Retrofit Design of Distillation Columns," Trans IChemE, Vol. 81, part A, pp. 971-986 2003.
[8] N.R. Corona, A.J. Gutierrez, "Optimum design of Petlyuk and dividedwall distillation systems using a shortcut model," Chemical Engineering Research and Design, vol. 88, pp. 1405-1418, 2010.
[9] J.M. Douglas, Conceptual Design of Chemical Processes. Mc Graw- Hill, 1988, pp. 32-35,667-672.
[10] R. Smith, Chemical Process Design and Integration. John Wiley, 1988, pp. 164-173.
[11] R. Premkumar, G.P. Rangaiah, "Retrofitting conventional column systems to dividing-wall columns," Chemical Engineering Research and Design, vol. 87, pp. 47-60, 2009.