Clean Technology (청정기술)

The Korean Society of Clean Technology (한국청정기술학회)
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Rational Design of Extractive Distillation Toward Enhanced Separation of HFPO from HFP/HFPO Mixture

  • Lee, Yongtaek (Department of Chemical Engineering, Chungnam National University)
  • Received : 2017.08.01
  • Accepted : 2017.08.23
  • Published : 2018.03.30
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Abstract

Hexafluoropropyleneoxide ($C_3F_6O$, 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 ($C_3F_6$, 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.

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References

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