METHOD FOR SEPARATING MALEIC ANHYDRIDE FROM MIXTURES CONTAINING THE SAME BY MEANS OF STRIPPING.

摘要

The invention relates to a method for separating maleic anhydride from a gas flow containing maleic anhydride. According to said method: a) the gas flow containing maleic anhydride is brought into contact with a liquid absorbent phase containing at least one high-boiling inert absorption agent for maleic anhydride, and b) maleic anhydride is separated from the obtained liquid absorbate phase by stripping in a column using hydrogenous gas as a stripping agent. The invention is characterised in that the stripping agent is supplied to the column at two points separated by at least one theoretical separating stage.