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本发明涉及到从醋酸加氢反应得到的粗乙醇产品回收乙醇。应用的粗乙醇产品的分离和净化过程能够回收无水乙醇成分。过程包括使用一台或多台萃取蒸馏塔分离粗乙醇产品,萃取蒸馏塔应用一种或多种萃取剂。以无水乙醇成分的总质量计,无水乙醇成分包
The present invention relates to the recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid. The separation and purification of the applied caustic ethanol product can recover the anhydrous ethanol component. The process involves the use of one or more extractive distillation columns to separate the caide ethanol product and the extractive distillation column to use one or more extractants. Based on the total mass of anhydrous ethanol component, the absolute ethanol component package