Recovery of halogen

Claim 1

A PROCESS FOR RECOVERING A HALOGEN SELECTED FROM THE GROUP CONSISTING OF CHLORINE, BROMINE AND IODINE FROM AN ANHYDROUS GASEOUS MIXTURE CONTAINING THE HALOGEN, THE CORRESPONDING HALOGEN HALID AND INERT GASES WHICH COMPRISES CONTACTING, IN AN ANHYDROUS ATMOSPHERE, THE GASEOUS MIXTURE WITH ANHYDROUS LIQUID HYDROGEN HALIDE, WHEREIN THE HALOGEN ATOM OF THE ANHYDROUS LIQUID HALIDE IS THE SAME AS THE AHLOGEN IN THE GASEOUS MIXTURE, IN AN ABSORPTION ZONE AT A TEMPERATURE AND PRESSURE SUFFICIENT TO MAINTAIN A MINOR PORTION OF THE HALOGEN HALIDE IN THE LIQUID PHASE; ABSORBING AND CONDENSING THE HALOGEN IN THE ANHYDROUS LIQUID HYDROGEN HALIDE; WITHDRAWING INERT GASES AND HYDROGEN HALIDE VAPOR FROM THE ABSORPTION ZONE; SEPARATELY WITHDRAWING THE RESULTING LIQUID HALOGENHYDROGEN HALIDE MIXTURE FROM THE ABSORPTION ZONE AND UTILIZING HEAT OF ABSORPTION CONTAINED IN THE WITHDRAWNLIQUID MIXTURE TO EVAPORATE AT LEAST A MAJOR PORTION OF THE LIQUID HYDROGEN HALIDE FROM THE LIQUID HALOGEN IN A VAPORIZATION ZONE AND RECOVERING THE HALOGEN AS THE PRODUCT OF THE PROCESS.