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Simulation studies of n-heptane/toluene separation by extractive distillation using sulfolane, phenol, and NMP

  • Tushar Perkar , Naitik Choksi , Chintan Modi und Milind Joshipura ORCID logo EMAIL logo


Simulation studies of n-heptane/toluene system were performed using Aspen Plus. The comparative study of different entrainers: N-Methyl-2-Pyrrolidone (NMP), Phenol, and Sulfolane for separation of this system was done. Sensitivity analysis was carried out to optimize flowsheets. The criteria to determine the appropriate solvent for the said system included, the total cost calculated by the Aspen Process Economic Analyzer, amount of the solvent consumed, cost of the solvent, and purity obtained during the separation process. For the given system, sulfolane was found to be the appropriate solvent.

Corresponding author: Milind Joshipura, Department of Chemical Engineering , Nirma University, Ahmedabad, India, E-mail:

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: None declared.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.


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Received: 2020-08-27
Accepted: 2021-05-04
Published Online: 2021-05-28

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Heruntergeladen am 7.2.2023 von https://www.degruyter.com/document/doi/10.1515/ijcre-2020-0149/html?lang=de
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