According to the ongoing regulations, the need to identify green and economical production roots for fuels is of paramount importance. Unfortunately, biofuels production is often accompanied with the for-mation of water, that needs to be removed energy-efficiently. To achieve this separation, extractive and conventional heterogeneous azeotropic distillation have been extensively studied, but these solutions are usually high energy-demanding when non-negligible water content is involved. In view of introducing significant energy savings for the alcohol dehydration, this work focuses on the analysis of two innovative separation schemes: one based on heterogeneous azeotropic distillation with binary azeotrope and the other based on liquid-liquid extraction combined with distillation. For the sake of example, the proposed alternatives have been applied to the isopropanol-water mixture. The performances of the new configurations are assessed in terms of energy consumption and com-pared with conventional heterogeneous azeotropic distillation, proving the energy saving of the two pro-posed layouts.(c) 2023 Elsevier Ltd. All rights reserved.

Dehydration of IPA-H2O mixture: Review of fundamentals and proposal of novel energy-efficient separation schemes

Spatolisano E.;Pellegrini L. A.
2023-01-01

Abstract

According to the ongoing regulations, the need to identify green and economical production roots for fuels is of paramount importance. Unfortunately, biofuels production is often accompanied with the for-mation of water, that needs to be removed energy-efficiently. To achieve this separation, extractive and conventional heterogeneous azeotropic distillation have been extensively studied, but these solutions are usually high energy-demanding when non-negligible water content is involved. In view of introducing significant energy savings for the alcohol dehydration, this work focuses on the analysis of two innovative separation schemes: one based on heterogeneous azeotropic distillation with binary azeotrope and the other based on liquid-liquid extraction combined with distillation. For the sake of example, the proposed alternatives have been applied to the isopropanol-water mixture. The performances of the new configurations are assessed in terms of energy consumption and com-pared with conventional heterogeneous azeotropic distillation, proving the energy saving of the two pro-posed layouts.(c) 2023 Elsevier Ltd. All rights reserved.
2023
Alcohols dehydration
Liquid-liquid extraction
Heterogeneous azeotropic distillation
Biofuels
Process performance analysis
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1237334
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