Book chapter
Simultaneous Design of Ionic Liquids and Azeotropic Separation Processes
Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, KS 66049 USA1
CAPEC, Department of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark2
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..
| Language: | English |
|---|---|
| Year: | 2011 |
| Pages: | 1578-1582 |
| ISBN: | 044453895X , 044453895x , 0444538968 , 128316440X , 128316440x , 9780444538956 , 9780444538963 and 9781283164405 |
| ISSN: | 15707946 |
| Types: | Book chapter |
| DOI: | 10.1016/B978-0-444-54298-4.50094-5 |
