Solvent recovery with membrane technology (pervaporation)
IBMEM - Ing.-Büro für Membrantechnik

Max-Planck-Str.9, 61381 Friedrichsdorf (Frankfurt/Main), Germany

Tel. +49 (0)6172 137-132 - E-Mail: info@ibmem.com
Dehydration of ethanol, isopropanol, amylic alcohol,..
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other pressure driven
membrane separations
(micro-, ultrafiltration,..)
Principles and
Applications of
PERVAPORATION
Membrane Screening
Test and Pilotes
Indutrial
Plants
Contact



DRYING OF SOLVENTS

The most common methods for the removal of water are:
- Adsorption
- Coalescing
- Distillation,
- Liquid-Liquid extraction
- Membrane separation
- Salting-out
- Fractional freezing

The advantages of the Pervaporation (membrane separation) are:
+ not affected by azeotrope (unlike distillation)
+ low operating costs (only the energy for the evaporation of water)
+ continuous process (unlike adsorption requiring a regeneration)


WHEN TO USE

Alcohols

Ethanol and Isopropanol dehydration from their azeotropes to 1000ppm to 1% water content is THE standard application of Pervaporation.
- Ethanol
- Isopropanol
- Amylic Alcohol

Ketones
- Acetone
- MEK, Methyl Ethyl ketone
- MIBK, Methyl Isobutyl Ketone

Esters
- Methyl acetate
- Ethyl acetate
- Butyl acetate
Solvent mixtures