Study on composite extractive distllation of ethyl acetate-ethanol-water

In this paper a new flow process of composite extractive distillation was introduced. Composite extractive distillation can he used to obtain high purity of ethyl acetate on the conditions of different solvent ratio and reflux ratio. In this process, glycerol and water are used as proper extractive agents. Also proper solvent ratio and reflux ratio were groped through experiments of composite extractive distillation in operation. When the ratio of solvent equals to 1 :1 :1 and reflux ratio equals to 4, high purity ethyl acetate (99. 5% ) can be obtained on the top of extractive distillation tower, at the same time aqueous alcohol (95% ) can be obtained on the top of solvent recovery tower by the flow process. Glycerol can be recycled and water can be obtained easily without expensive. The process is simplified and energy can be reduced. The basic data can be provided for industrial produce.