Patent ID: 6395913
Filing Date: 2002-05-28
Classification: C07D

Abstract:
Process for the recovery of epoxybutene from a substantially-gaseous effluent from an epoxidation zone wherein butadiene is contacted with an oxygen-containing gas in the presence of a catalyst and an inert diluent, to produce an epoxidation effluent comprising epoxybutene, butadiene, oxygen, an inert diluent and water which comprises the steps of:I. feeding the effluent to an absorption vessel wherein the effluent is intimately contacted with a water-miscible, liquid absorbent to obtain: (i) a gaseous effluent comprising butadiene, oxygen and an inert diluent from the upper section of the absorption vessel; and (ii) a liquid effluent comprising epoxybutene, the absorbent and water from the lower section of the absorption vessel; and II. feeding the liquid effluent of step (ii) above to an extraction zone wherein the effluent is intimately contacted with an inert, water-immiscible, liquid extractant to obtain: (iii) a first liquid effluent comprising the water-immiscible, liquid extractant and epoxybutene; and (iv) a second liquid effluent comprising the absorbent and water from which epoxybutene has been depleted.