Improved process for separating and recovering hydrogen fluoride fluorocarbons and mixtures of these.

摘要

PRESENTS A TO SEPARATE PROCESS AND RECOVER an organic phase (eg FLUOROCARBONS TALES as chlorofluorocarbons, hydrochlorofluorocarbons, hydrofluorocarbons and perfluorocarbons) FROM A POWER SUPPLY OF A FLUOROCARBONS MIXTURE AND HYDROGEN FLUORIDE, wherein the mixture is characterized as FORMING at least one composition azeotrope or similar azeotrope comprising at least a fluorocarbon and hydrogen fluoride by passing the feedstream MIX FLUOROCARBON / HF through the side of supplying a semipermeable membrane and subsequently separating ADDITION THE CURRENT hYDROGEN FLUORIDE WHICH Removed fluorocarbon and outputting a residual current ENRICHED fluorocarbon MEMBRANE UNIT OF CONVENTIONAL by distillation. A fluorocarbon phase and a phase essentially pure hydrogen fluoride are recovered from the distillation BEING RECYCLED THE MATERIALDESTILADO azeotrope or azeotrope SIMILAR TO THE ENTRANCE UNIT semi-permeable membrane.