The invention relates to a dehydration process, more particularly it relates to a process for the vigorous dehydration of substances or mixtures, primarily condensation reaction mixtures, (e.g. direct esterification, direct acetal formation, direct ketal formation) using continuous azeotropic distillation with an organic solvent which forms with water a practically immiscible azeotropic mixture of minimal boiling point in such a way that the condensing distillate is cooled to at least a temperature at which the condensate with a given water content or the organic phase of the condensate is supersaturated with water, water separates and the organic phase of lower water content obtained this way is recycled back into the distillation vessel.
本发明涉及一种脱
水工艺,更具体地说,它涉及一种对物质或混合物,主要是缩合反应混合物(如直接酯化、直接
缩醛形成、直接
缩酮形成)进行强力脱
水的工艺。直接酯化、直接形成
缩醛、直接形成
缩酮)的连续共沸蒸馏工艺,该工艺使用有机溶剂与
水形成实际上不相溶的沸点极低的共沸混合物,冷凝蒸馏物至少冷却到一定温度,在该温度下,具有一定含
水量的冷凝物或冷凝物的有机相与
水过饱和,
水分离,通过这种方式获得的含
水量较低的有机相被回收到蒸馏容器中。