Energy Saving Performances of the Internal Heat Integrated Batch Distillation for Non-Ideal Mixture

  • Suzuki Yasuhiko
    Department of Chemistry and Chemical Engineering, Graduate School of Science and Engineering, Yamagata University
  • Yamaki Takehiro
    Research Institute for Chemical Process Technology, National Institute of Advanced Industrial Science and Technology (AIST)
  • Endo Akira
    Research Institute for Chemical Process Technology, National Institute of Advanced Industrial Science and Technology (AIST)
  • Matsumoto Hideyuki
    Department of Chemical Science and Engineering, Graduate School of Materials and Chemical Technology, Tokyo Institute of Technology Renewable Energy Research Center, National Institute of Advanced Industrial Science and Technology (AIST)
  • Horie Takafumi
    Renewable Energy Research Center, National Institute of Advanced Industrial Science and Technology (AIST) Depertment of Chemical Science and Engineering, Kobe University
  • Matsuda Keigo
    Department of Chemistry and Chemical Engineering, Graduate School of Science and Engineering, Yamagata University Renewable Energy Research Center, National Institute of Advanced Industrial Science and Technology (AIST)

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Abstract

<p>Batch distillation is a useful separation technique for obtaining a pure product from a multi-component mixture. However, it is less energy-efficient than continuous distillation. This paper describes the system we developed for an internally heat-integrated batch distillation column (Batch or Semi-batch HIDiC) to minimize the energy consumption of the batch distillation process. We simulated the isopropyl alcohol dehydration process as a non-ideal system. The applicability of the system was examined using a commercial process simulator, Aspen Plus Dynamics®, to evaluate energy-saving performance. The energy evaluations of the Batch and the Semi-batch HIDiC model were compared against the conventional batch distillation model. It was found that with the Semi-batch HIDiC, this system has the potential to reduce process time and energy consumption more effectively than with conventional batch distillation.</p>

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