Process for the purification of an alkanolamine

摘要

A process for the purification of an aqueous alkanolamine which process comprises subjecting the alkanolamine to distillation process carried out in one or more film-type evaporators and comprising at least two steps, wherein in the first step water is removed from the aqueous alkanolamine and in the second step the de-watered alkanolamine is further purified.