Purification of propylene oxide resulting from epoxidation of propylene with hydrogen peroxide

The invention relates to in the rough cast filler product according to by pure oxygen propane from wherein the epoxidation reaction of propylene and hydrogen peroxide the method. A method to remove of water and massively methanol from cast with a product and is the reaction content, and water for and epoxy propane product in the extraction solvent that is obtained by performing the extraction distilling is. The comprises greater than about 55℃, and less than at about 75℃ temperature of the condition, obtaining comprises a pure epoxy propane of the tower top distilling current or a water-dispersible component, having low wherein the epoxy propane to the production speed of the propanediol and heavy fraction loss. A in the final distilling further performing the purification to obtain to atom to the epoxy propane of commercial layer purity of the pure epoxy propane.