煤制乙二醇副产乙醇提纯工艺及其应用

Purification process of by-product ethanol from coal to ethylene glycol and its application

采用分子筛膜分离-精馏耦合工艺对煤制乙二醇副产乙醇进行提纯,建成年处理4000 t副产乙醇的工艺装置,产品乙醇达到工业级一等品标准。对该工艺进行了经济性分析,年新增利润超650万元,为该工艺在煤制乙二醇行业的推广、实现企业节能增效建立了示范。

Molecular sieve membrane separation-distillation coupling process is utilized to purify ethanol,which is by-product from coal to ethylene glycol process.Based on this process,a plant is built to purity 4000 tons per year of by-product ethanol,and ethanol product reaches the industrial grade A standard.The economic analysis on the process shows that the annual profit exceeds RMB 6.5 million,which sets up a demonstration for the promotion of the process in the coal-to-ethylene glycol industry and the realization of energy saving and efficiency enhancing.