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Communication Dans Un Congrès Année : 2010

Isopropyl alcohol recovery by heteroazeotropic batch distillation

Guy van Baelen
  • Fonction : Auteur
Steven Vreysen
  • Fonction : Auteur
Vincent Gerbaud
Ivonne Rodríguez-Donis
  • Fonction : Auteur
Jeroen Geens
  • Fonction : Auteur
Bart Janssens
  • Fonction : Auteur

Résumé

Solvent recovery is becoming a major issue in the pharmaceutical and specialty chemical industries. Solvent recovery by conventional batch distillation is limited by the frequent presence of azeotropes in the used solvent mixtures. Most distillation processes for the separation of azeotropic or difficult zeotropic mixtures involve the addition of an entrainer (homogeneous and heterogeneous azeotropic distillation or extractive distillation). In this study the recovery of IPA (isopropyl alcohol) from an industrial waste stream (IPA/water mixture) was studied by conventional batch distillation and heteroazeotropic batch distillation, using cyclohexane as entrainer. First the ternary IPA/water/cyclohexane azeotrope (boiling temperature of 64.1 °C), then the binary IPA/cyclohexane azeotrope (boiling temperature of 69.3°C) and finally pure IPA was distilled. 99.96 mass% IPA could be obtained by heteroazeotropic distillation, using cyclohexane as entrainer. By using this procedure the IPA recovery is 97.6%, which is high compared to the conventional distillation techniques. The binary azeotrope could be reused in a subsequent heteroazeotropic batch distillation.
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Dates et versions

hal-04027831 , version 1 (14-03-2023)

Identifiants

  • HAL Id : hal-04027831 , version 1
  • OATAO : 4155

Citer

Guy van Baelen, Steven Vreysen, Vincent Gerbaud, Ivonne Rodríguez-Donis, Jeroen Geens, et al.. Isopropyl alcohol recovery by heteroazeotropic batch distillation. European Meeting on Chemical Industry and Environment EMChiE 2010, 2010, Mechelen, Belgium. pp.979-986. ⟨hal-04027831⟩
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