Recycling method of catalyst in reaction system for preparing vitamin E acetate

According to the method for recycling the catalyst in the reaction system for preparing the vitamin E acetate, the recycled catalyst can keep good activity, the good catalyst recycling effect is achieved, the production cost can be reduced, and generation of catalyst waste liquid can be reduced. The recovery method comprises the following steps: 1) layering a reaction product to obtain a product phase containing vitamin E acetate and a post-reaction catalyst phase containing zinc halide and hydrogen halide; 2) treating the reacted catalyst phase to obtain a to-be-recycled catalyst phase of which the heavy component content is less than or equal to 1wt%; the heavy component is a compound of which the molecular weight is greater than 600; and 3) putting the catalyst phase to be recycled into the reaction system to be used as the catalyst. 本发明提供一种制备维生素E乙酸酯的反应体系中催化剂的回用方法，所回用的催化剂能够保持良好的活性，具有较佳的催化剂回收套用效果，能降低生产成本并减少催化剂废液的产生。所述回收方法包括如下步骤：1)将反应产物分层得到含有维生素E乙酸酯的产物相以及含有所述卤化锌和所述卤化氢的反应后催化剂相；2)将所述反应后催化剂相进行处理，以得到重组分含量≤1wt％的待