This to separate, with the aid of a mixture of carbon dioxide and an inert gas, is the almost - critical or super - critical, the oxide of ethylene of aqueous solutions.

摘要

To to separate, with the aid of a mixture of carbon dioxide and an inert gas, is the almost - critical or super - critical, the oxide of ethylene, of aqueous solutions. / p & & p & it is extracted 32 of ethylene oxide of aqueous solutions, sr, 30 by means of carbon dioxide 34 in a quasi - critical or super - critical, and then recovered of ethylene oxide (oep by distillation, 40 in the sub - critical conditions. It is improved the distillation, by adding to the carbon dioxide or of a gas which fit between about 32c and 75c the critical temperature of the mixture of gas at the top of the distillation column 40. The gases, preferred are the saturated hydrocarbons, in particular, the propane, butane, isobutane, pentane. The co is recycled, 42, 44, 46, 34, as well as the aqueous solution depleted 36.