SEPARATION OF LIGHT GASES FROM HALOGENS

摘要

A PROCESS IS PROVIDED FOR SEPARATING ONE OR MORE LIGHT GASES FROM BROMINE OR CHLORINE USING ONE OR MORE PHYSICAL SEPARATIONS AND CONTACT WITH A CHEMICAL SCRUBBER (26) TO RECOVER ADDITIONAL HALOGEN. IN ONE ASPECT, THE PROCESS COMPRISES (A) PROVIDING A FEED OF HALOGEN CONTAINING ONE OR MORE LIGHT GASES TO A DISTILLATION COLUMN (14) OR FLASH VAPORIZER; (B) OPERATING THE DISTILLATION COLUMN (14) OR FLASH VAPORIZER TO SEPARATE THE FEED INTO (I) A FIRST LIQUID CONTAINING A MAJOR AMOUNT OF HALOGEN AND NO MORE THAN A MINOR AMOUNT OF LIGHT GAS(ES), AND (II) A FIRST VAPOR (52) CONTAINING A MAJOR AMOUNT OF LIGHT GAS(ES) AND NO MORE THAN A MINOR AMOUNT OF HALOGEN; AND (C) PROVIDING THE VAPOR TO A CHEMICAL SCRUBBER (26) TO RECOVER HALOGEN FROM THE VAPOR. THE MOST ILLUSTRATIVE DRAWING IS