| 摘要 |
<p>1. A process for the concentration of an aqueous solution of ethylene oxide which may contain dissolved gases and other impurities, wherein said solution is first subjected to entrainment with steam in a distillation column, the recovery being then effected of the ethylene oxide contained in the gas stream issuing from the head of said column, characterised in that said gas flow is progressively condensed in two or three heat exchangers arranged in series, the absolute pressure of the distillation column and of the exchangers being comprised between 1.5 and 6 bar and the temperature of the cold source of the last exchanger being comprised between 5 degrees C and a maximum temperature which is 5 degrees C below the temperature of condensation of pure ethylene oxide at the pressure under consideration.</p> |
