Separation and purification method of vitamin A acetate

The invention discloses a separation and purification method of vitamin A acetate. The method comprises the following steps: respectively introducing a raw material vitamin A acetate crude solution and a composite extraction agent into an extraction tower, performing countercurrent contact purification, feeding the vitamin A acetate solution obtained at the top of the extraction tower into a refining tower, and further refining to obtain the vitamin A acetate product. The extraction of the vitamin A crude solution is realized through the extraction agent with a specific formula, the impurity content after extraction is low, crystallization is not easy to occur after normal-temperature storage, and the production cost is saved. 本发明公开了一种维生素A醋酸酯的分离提纯方法，包括以下步骤：将原料维生素A醋酸酯粗溶液与复合萃取剂分别通入萃取塔中逆流接触提纯，将萃取塔塔顶得到的维生素A醋酸酯溶液进入精制塔进行进一步精制得到维生素A醋酸酯产品。本发明通过涉及特定配方的萃取剂实现了维生素A粗溶液的萃取，萃取后杂质含量低，常温存储不易结晶，节约了生产成本。