本实用新型涉及一种高效提纯草酸酯加氢法所得乙二醇的系统,其特征在于其特征在于包括换热单元、补充制冷设备、分离单元,LNG储罐的输送管道经过换热单元,草酸酯加氢制乙二醇粗产物输送管道与LNG输送反向地经过换热单元后连接至补充制冷设备,补充制冷设备经管道连接至并联的分离单元,分离单元的液体输送管路、固体输送管道与 The utility model relates to a system for efficiently purifying ethylene glycol obtained by hydrogenation of oxalate, which is characterized in that the system comprises a heat exchange unit, a supplementary refrigeration device, a separation unit and a conveying pipe of the LNG storage tank, Oxalic acid ester hydrogenation to glycol crude product delivery pipeline and LNG transport reversely through the heat exchange unit connected to the supplemental refrigeration equipment, supplemental refrigeration equipment is connected to the parallel separation unit, the separation unit of the liquid delivery pipeline, Solid conveying pipe and