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Distribution of heat exchange in optimum diabatic distillation columns

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  • de Koeijer, Gelein
  • Røsjorde, Audun
  • Kjelstrup, Signe

Abstract

We improved our model for minimization of entropy production rate in diabatic tray distillation. The entropy production rate had contributions from heat and mass transfer on the trays and from heat exchangers connected to the trays. The area of the heat exchangers were not used as free variables, but calculated from four different area distribution rules. The total heat exchange area and its distribution over the column had a significant effect on the entropy production rate in the system. In the limit of infinitely large forces, the results of an adiabatic column were obtained, as expected. As the forces became smaller, the distribution of the area became more important. The area distribution rule with constant average force in each heat exchanger had the lowest entropy production rate of the rules used. Possible consequences for column design were discussed, and a sketch with the characteristics of an optimum distillation column was presented. Two minimization algorithms were used with similar outcome; the Matlab® function fmincon being the fastest.

Suggested Citation

  • de Koeijer, Gelein & Røsjorde, Audun & Kjelstrup, Signe, 2004. "Distribution of heat exchange in optimum diabatic distillation columns," Energy, Elsevier, vol. 29(12), pages 2425-2440.
    • Handle: RePEc:eee:energy:v:29:y:2004:i:12:p:2425-2440
    DOI: 10.1016/j.energy.2004.03.034
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    References listed on IDEAS

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    1. Rivero, Ricardo, 2001. "Exergy simulation and optimization of adiabatic and diabatic binary distillation," Energy, Elsevier, vol. 26(6), pages 561-593.
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    Cited by:

    1. Xia, Shaojun & Chen, Lingen & Sun, Fengrui, 2011. "Power-optimization of non-ideal energy converters under generalized convective heat transfer law via Hamilton-Jacobi-Bellman theory," Energy, Elsevier, vol. 36(1), pages 633-646.
    2. Jana, Amiya K., 2010. "Heat integrated distillation operation," Applied Energy, Elsevier, vol. 87(5), pages 1477-1494, May.
    3. Shu, Liwei & Chen, Lingen & Sun, Fengrui, 2007. "Performance optimization of a diabatic distillation-column by allocating a sequential heat-exchanger inventory," Applied Energy, Elsevier, vol. 84(9), pages 893-903, September.
    4. Tadros, M. & Ventura, M. & Guedes Soares, C., 2019. "Optimization procedure to minimize fuel consumption of a four-stroke marine turbocharged diesel engine," Energy, Elsevier, vol. 168(C), pages 897-908.
    5. Alcántara-Avila, J.Rafael & Sotowa, Ken-Ichiro & Horikawa, Toshihide, 2015. "Entropy production and economic analysis in diabatic distillation columns with heat exchangers in series," Energy, Elsevier, vol. 93(P2), pages 1719-1730.
    6. Jana, Amiya K., 2016. "A new divided-wall heat integrated distillation column (HIDiC) for batch processing: Feasibility and analysis," Applied Energy, Elsevier, vol. 172(C), pages 199-206.
    7. Johannessen, Eivind & Røsjorde, Audun, 2007. "Equipartition of entropy production as an approximation to the state of minimum entropy production in diabatic distillation," Energy, Elsevier, vol. 32(4), pages 467-473.

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