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Separation of aqueous isopropanol by reactive extractive distillation

✍ Scribed by Lei Zhigang; Zhang Jinchang; Chen Biaohua

Publisher
Wiley (John Wiley & Sons)
Year
2002
Tongue
English
Weight
78 KB
Volume
77
Category
Article
ISSN
0268-2575

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✦ Synopsis

Abstract

A new separation method of reactive extractive distillation is proposed for the separation of isopropanol and water, using the mixture of ethylene glycol (C~2~H~6~O~2~) and glycollic potassium (C~2~H~5~O~2~K) as an entrainer. Vapor–liquid‐equilibrium (VLE) measurements confirmed that the entrainer was effective for this separation. Using a feed/solvent volume ratio of 1:1, isopropanol with a concentration over 96.0% weight fraction was obtained by the reactive extractive distillation process and the azeotropic point was eliminated. A novel process of separating isopropanol and water is designed on the basis of reactive extractive distillation to obtain the product with different concentrations, which may have a lasting value in industry.

Β© 2002 Society of Chemical Industry

πŸ“œ SIMILAR VOLUMES

Separation of isopropanol from aqueous s
Separation of isopropanol from aqueous solution by salting-out extraction
✍ Tang Zhigang; Zhou Rongqi; Duan Zhanting πŸ“‚ Article πŸ“… 2001 πŸ› Wiley (John Wiley & Sons) 🌐 English βš– 256 KB

## Abstract A novel salting‐out extraction process has been developed to separate isopropanol from aqueous solution. Potassium carbonate was experimentally shown to be effective in modifying the liquid–liquid equilibrium (LLE) of an isopropanol/water/hexane system in favour of the solvent extractio