Clean Technology, Vol.24, No.1, 15-20, March, 2018
Rational Design of Extractive Distillation Toward Enhanced Separation of HFPO from HFP/HFPO Mixture
E-mail:
Hexafluoropropyleneoxide (C3F6O, HFPO) is highly expensive and it may be used as a raw material for the synthesis of various fluorine based compounds. Currently, extractive distillation method has gained considerable attention to collect the HFPO from a mixture of HFPO / hexafluoropropylene (C3F6, HFP). Optimized operating conditions are studied using a theoretical method for the extraction process. Among available solvents for the purification process, the use of 1,1-dichloro-1-fluoroethane exhibits a high purity of HFPO as a top product and minimize the required heat duty. Since the boiling point of the solvent increases as the pressure in the column increases, the enhanced extractive capability of the solvent led to the high purity of HFPO at the high pressure.
- Drobny JG, Technology of Fluoropolymers, 2nd ed., CRC Press, Boca Raton (2008).
- Lee EJ, et al., U.S. Patent No. 20,150,346,392 A1 (2014).
- Lee SB, et al., U.S. Patent No. 8916666 (2011).
- http://www2.dupont.com/fluorointermediates/en_US/assets/downloads/k05132.pdf (accessed July 2017).
- Rudnick LR, CRC Press, Boca Raton (2013).
- Emery M, et al., ECS Transactions, 11(1), 3 (2007)
- Wroblewska A., et al., Org. Process Res. Dev., 14(1), 272 (2010)
- Nakaya H., et al., U.S. Patent No. 201200 06672 A1 (2012).
- file:///c:/users/minzae%20lee/downloads/leizhigang-self-200710-1.pdf (accessed July 2017).
- http://kolmetz.com/pdf/foo/extractive-distillation.pdf(accessed July 2017).