Application of phase equilibrium diagrams for evaluation of mixture separation with supercritical separating agent

Application of phase equilibrium diagrams for evaluation of mixture separation with supercritical... The problem of separation of close boiling point mixtures by example of separation of chloroform from the impurities of 1,1-dichloroethane and cis-dichloroethylene was considered. It was proposed to use supercritical separating agent for removal of contaminants with similar boiling points. In order to carrying out the separation of such mixtures it was proposed a technique of selection of a co-solvent. An equation of phase equilibrium on the basis of group contributions and the modified Soave-Redlich-Kwong equation was considered. A calculation of equilibrium in the example with chloroform and chloroform (with impurities)-tetrafluoroethane was made by the Soave-Redlich-Kwong equation. The phase diagram, by which a range of separation conditions can be determined, was constructed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

Application of phase equilibrium diagrams for evaluation of mixture separation with supercritical separating agent

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Publisher
Pleiades Publishing
Copyright
Copyright © 2014 by Pleiades Publishing, Ltd.
Subject
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
ISSN
1070-4272
eISSN
1608-3296
D.O.I.
10.1134/S1070427214080138
Publisher site
See Article on Publisher Site

Abstract

The problem of separation of close boiling point mixtures by example of separation of chloroform from the impurities of 1,1-dichloroethane and cis-dichloroethylene was considered. It was proposed to use supercritical separating agent for removal of contaminants with similar boiling points. In order to carrying out the separation of such mixtures it was proposed a technique of selection of a co-solvent. An equation of phase equilibrium on the basis of group contributions and the modified Soave-Redlich-Kwong equation was considered. A calculation of equilibrium in the example with chloroform and chloroform (with impurities)-tetrafluoroethane was made by the Soave-Redlich-Kwong equation. The phase diagram, by which a range of separation conditions can be determined, was constructed.

Journal

Russian Journal of Applied ChemistrySpringer Journals

Published: Nov 26, 2014

References

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