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Separation of the Mixture 2-Propanol + Water by Heterogeneous Azeotropic Distillation with Isooctane as an Entrainer

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  • Giorgia De Guido

    (GASP-Group on Advanced Separation Processes & GAS Processing, Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy)

  • Chiara Monticelli

    (GASP-Group on Advanced Separation Processes & GAS Processing, Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy)

  • Elvira Spatolisano

    (GASP-Group on Advanced Separation Processes & GAS Processing, Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy)

  • Laura Annamaria Pellegrini

    (GASP-Group on Advanced Separation Processes & GAS Processing, Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy)

Abstract

Advanced processes, which are alternatives to ordinary distillation, are essential to dehydrate azeotropic alcoholic mixtures for biofuel production. In that regard, this work focuses on the analysis of heterogeneous azeotropic distillation for the separation of a 2-propanol + water mixture in order to recover the alcohol with a sufficiently low water content. By comparing the performances of various entrainers on the basis of ternary maps, isooctane was selected for further process analysis. An advantage it poses is related to the fact that traces of it within the recovered dehydrated alcohol are highly welcome with a view to its subsequent use as a fuel. Aspen Plus ® V11 software was employed for the simulation of the process, thus filling the gap existing in the literature due to the lack of studies on the process analysis of the heterogeneous azeotropic distillation of the 2-propanol + water system using isooctane as an entrainer.

Suggested Citation

  • Giorgia De Guido & Chiara Monticelli & Elvira Spatolisano & Laura Annamaria Pellegrini, 2021. "Separation of the Mixture 2-Propanol + Water by Heterogeneous Azeotropic Distillation with Isooctane as an Entrainer," Energies, MDPI, vol. 14(17), pages 1-18, September.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:17:p:5471-:d:627840
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    References listed on IDEAS

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    1. David Fernández-Rodríguez & Magín Lapuerta & Lizzie German, 2021. "Progress in the Use of Biobutanol Blends in Diesel Engines," Energies, MDPI, vol. 14(11), pages 1-22, May.
    2. María D. Redel-Macías & David E. Leiva-Candia & José A. Soriano & José M. Herreros & Antonio J. Cubero-Atienza & Sara Pinzi, 2021. "Influence of Short Carbon-Chain Alcohol (Ethanol and 1-Propanol)/Diesel Fuel Blends over Diesel Engine Emissions," Energies, MDPI, vol. 14(5), pages 1-17, February.
    3. Nikki Sjulander & Timo Kikas, 2020. "Origin, Impact and Control of Lignocellulosic Inhibitors in Bioethanol Production—A Review," Energies, MDPI, vol. 13(18), pages 1-20, September.
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