Water → Maleic Anhydride

Participants

Reaction Steps

In a process for stripping low-boiling impurities from crude maleic anhydride produced by the vapor phase oxidation of a hydrocarbon feedstock; the improvement which comprises, passing the lights stripper overhead vapor containing, by volume, about 1 to 30 percent maleic anhydride and about 10 to 70 percent water, through a condenser system maintained at a temperature in the range of from about 25° C. to 40° C. at less than about 50 millimeters of mercury pressure thereby to obtain solid maleic anhydride having less than 300 ppm of maleic acid and fumaric acid impurities.

Provenance & Evidence