Patent ID: 8273928

Claim:
A process for separating a mixture comprising HF and fluoroolefin, said process comprising: a. feeding the composition comprising HF and fluoroolefin to a first distillation column; b. removing an azeotrope composition comprising HF and fluoroolefin as a first distillate and either i) HF or ii) fluoroolefin as a first column bottoms composition; c. condensing the first distillate to form 2 liquid phases, being i) an HF-rich phase and ii) a fluoroolefin-rich phase and separating said 2 liquid phases in a decanter; and d. recycling a first liquid phase enriched in the same compound that is removed as the first column bottoms, said first liquid phase being either i) HF-rich phase or ii) fluoroolefin-rich phase, back to the first distillation column.