METHOD FOR PURIFYING AN ORGANIC SOLVENT FOR THE PURPOSE OF ABSORPTION OF MALEIC ACID ANHYDRIDE

摘要

The invention relates to an improved method for purifying an organic solvent for the purpose of absorbing a maleic acid anhydride from a gaseous mixture. The inventive method is characterized by removing the maleic acid anhydride from the solvent, removing a partial flow from the solvent flow, and distilling said partial flow and returning it to the solvent flow. A low- boiling fraction and a high-boiling fraction are removed from the fraction that substantially consists of purified solvent and the fraction that substantially consists of purified solvent is returned to the solvent flow.< /SDOAB>