Process for separating malu00e9ico anhydride from a gas stream containing carbon malu00e9ico

摘要

Process for separating maleic anhydride from a gas stream containing maleic anhydride. The invention relates to a method for separating maleic anhydride from a gas stream containing maleic anhydride.According to this method: (a) the gas flow containing maleic anhydride is contacted with an absorbent liquid phase containing at least one absorption agent inert high boiling point for maleic anhydride, and (b) maleic anhydride is separated from the liquid phase of absorbato for extra Tion in a column using hydrogen gas as extraction agent.The invention is characterized by the fact that the extraction agent is supplied to the column at two points separated by at least one stage of separation theory.