Recovery and purification of ethylene oxide by distillation and absorption
Abstract
Abstract ETHYLENE OXIDE, PRODUCED BY THE DIRECT, CATALYTIC OXIDATION OF ETHYLENE, IN ADMIXTURE WITH INERT GASES, LOW MOLECULAR WEIGHT HYDROCARBONS, AND OXIDES OF CARBON, IS ABSORBED IN AN AQUEOUS STREAM AND STRIPPED THEREFROM TO PRODUCE A GASEOUS STRIPPING ZONE OVERHEAD. THE STRIPPING ZONE OVERHEAD IS COOLED, CONDENSING MOST OF THE WATER AND A PORTION OF THE ETHYLENE OXIDE CONTAINED THEREIN. THE COOLED STRIPPING ZONE OVERHEAD IS PHASE SEPARATED, THE VAPOR BEING CONTACTED WITH A LEAN AQUEOUS ABSORBENT IN A SCRUBBING ZONE TO RECOVER SUBSTANTIALLY ALL OF THE ETHYLENE OXIDE FROM THE NON-CONDENSABLE GASES. THE LIQUID FROM THE PHASE. SEPARATOR AND THE ETHYLENE OXIDE-RICH AQUEOUS ABSORBATE ARE JOINED AND FED TO AN ETHYLENE OXIDE PURIFICATION ZONE, IN WHICH HIGH PURITY ETHYLENE OXIDE IS RECOVERED.
Inventors
- 👤 R Vanderwater
Bibliographic Details
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