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Laboratory- and pilot plant-scale study on the dehydration of cyclohexane by pervaporation

✍ Scribed by Inmaculada Ortiz; Ane Urtiaga; Raquel Ibáñez; Pedro Gómez; Daniel Gorri

Publisher
Wiley (John Wiley & Sons)
Year
2005
Tongue
English
Weight
190 KB
Volume
81
Category
Article
ISSN
0268-2575

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✦ Synopsis

Abstract

In this work, pervaporation is applied for the dehydration of industrial cyclohexane, used as a solvent and reaction medium in the manufacture of synthetic rubbers. Working with initial concentrations of water in cyclohexane within the range of 0.090–0.110 kg m^−3^, an experimental study was performed (i) in the laboratory, using a radial cell with a membrane area of 0.0178 m^2^; and (ii) in a pilot plant located at the industrial site, with a plate‐and‐frame membrane module and a total membrane area of 3 m2. In both cases, the same pervaporation membrane, with a preferential flux of water, was used. The mass transfer coefficient was determined, together with its dependence on the hydrodynamic regime. The higher hydraulic resistance of the plate‐and‐frame module generated a pressure decrease that limited the feed velocity, thus increasing the mass transfer resistance of the pervaporation process in comparison with the bench‐scale system. Copyright © 2005 Society of Chemical Industry

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