Simultaneous Design of Ionic Liquids and Azeotropic Separation Processes

Brock C. Roughton, John White, Kyle V. Camarda, Rafiqul Gani

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

A methodology for the design of azeotrope separation processes using ionic liquids as entrainers is outlined. A Hildebrand solubility parameter group contribution model has been developed to screen for or design an ionic liquid entrainer that is soluble with the azeotropic components. Using the best candidate, vapor-liquid equilibria data is predicted using a new ionic liquid UNIFAC model that has been developed. The UNIFAC model is used to confirm the breaking of the azeotrope. The methanol-acetone azeotrope at 1 atm is used as an example. The azeotrope was predicted to break with 10 mol % [BMPy][BF4] added. The driving force concept is used to design an extractive distillation process that minimizes energy inputs. The methodology given can be expanded to the use of ionic liquids as entrainers in any azeotropic system of interest.
Original languageEnglish
Title of host publication21st European Symposium on Computer Aided Process Engineering
Number of pages2029
PublisherElsevier
Publication date2011
Pages1578-1582
ISBN (Print)978-0-444-53895-6
DOIs
Publication statusPublished - 2011
Event21st European Symposium on Computer Aided Process Engineering - Chalkidiki, Greece
Duration: 29 May 20111 Jun 2011
http://www.escape-21.gr/

Conference

Conference21st European Symposium on Computer Aided Process Engineering
CountryGreece
CityChalkidiki
Period29/05/201101/06/2011
Internet address
SeriesComputer Aided Chemical Engineering
Number29
ISSN1570-7946

Keywords

  • Process design
  • Azeotrope separation
  • Ionic liquids
  • Molecular design

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