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A Comparison of the Exergy Efficiencies of Various Heat-Integrated Distillation Columns

Author

Listed:
  • Areej Javed

    (School of Chemical Engineering, University of Engineering and Technology, Lahore 540000, Pakistan)

  • Afaq Hassan

    (Chemical Engineering Department, Khwaja Fareed University of Engineering and Information Technology, Rahimyar Khan 64200, Pakistan)

  • Muhammad Babar

    (Chemical Engineering Department, Khwaja Fareed University of Engineering and Information Technology, Rahimyar Khan 64200, Pakistan)

  • Umair Azhar

    (Chemical Engineering Department, Khwaja Fareed University of Engineering and Information Technology, Rahimyar Khan 64200, Pakistan)

  • Asim Riaz

    (Chemical Engineering Department, Khwaja Fareed University of Engineering and Information Technology, Rahimyar Khan 64200, Pakistan)

  • Rana Mujahid

    (Chemical Engineering Department, Khwaja Fareed University of Engineering and Information Technology, Rahimyar Khan 64200, Pakistan)

  • Tausif Ahmad

    (Chemical Engineering Department, Khwaja Fareed University of Engineering and Information Technology, Rahimyar Khan 64200, Pakistan)

  • Muhammad Mubashir

    (Department of Petroleum Engineering, School of Engineering, Asia Pacific University of Technology and Innovation, Kuala Lumpur 57000, Malaysia)

  • Hooi Ren Lim

    (Department of Chemical and Environmental Engineering, Faculty Science and Engineering, University of Nottingham Malaysia, Semenyih 43500, Malaysia)

  • Pau Loke Show

    (Department of Chemical and Environmental Engineering, Faculty Science and Engineering, University of Nottingham Malaysia, Semenyih 43500, Malaysia
    Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 325035, China
    Department of Sustainable Engineering, Saveetha School of Engineering, SIMATS, Chennai 602105, India)

  • Kuan Shiong Khoo

    (Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan 32003, Taiwan)

Abstract

Distillation has relatively low thermodynamic efficiency, so it is a prime target for process intensification studies. The current research aims to study exergy losses in various heat-integrated distillation columns. A conventional industrial-scale i-butane/n-butane fractionator has been selected as a case study for the comparison of the performances of various heat-integrated designs. The Aspen Plus ® process simulator is used to perform steady-state simulations and exergy analyses of the conventional distillation column (CDC), internally heat-integrated distillation column (iHIDiC), externally heat-integrated double distillation columns (EHIDDiC), and vapor recompression (VRC) systems. The results of these exergy analyses show that a modified VRC system ( η E = 10.69%) is the most efficient design for this separation. The exergy efficiency of the conventional VRC system is the same as that of the CDC ( η E = 9.27%). The EHIDDiC system ( η E = 9.77%) is somewhat better than the CDC, whereas iHIDiC shows poor exergy efficiency ( η E = 8.09%), even lower than the CDC.

Suggested Citation

  • Areej Javed & Afaq Hassan & Muhammad Babar & Umair Azhar & Asim Riaz & Rana Mujahid & Tausif Ahmad & Muhammad Mubashir & Hooi Ren Lim & Pau Loke Show & Kuan Shiong Khoo, 2022. "A Comparison of the Exergy Efficiencies of Various Heat-Integrated Distillation Columns," Energies, MDPI, vol. 15(18), pages 1-15, September.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:18:p:6498-:d:907679
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    References listed on IDEAS

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    1. Letitia Petrescu & Codruta-Maria Cormos, 2022. "Classical and Process Intensification Methods for Acetic Acid Concentration: Technical and Environmental Assessment," Energies, MDPI, vol. 15(21), pages 1-23, October.

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