Economizer of high boiling solvent extraction rectification method production high -purity ethanol

The utility model relates to an economizer of high boiling solvent extraction rectification method production high -purity ethanol, it is including extraction rectifying column, flash tank, recovery tower, vacuum system, storage tank, two condensers, two reboilers and material -handling pump. Extraction rectifying column tower body is equipped with ethanol water raw material feed valve and extractant charging valve, and the top is equipped with condenser and top of the tower ejection of compact control valve, and the bottom is equipped with bleeder valve at the bottom of reboiler and the tower, the flash tank is connected with vacuum system, and the bottom is equipped with the extractant recycle valve, and flash tank one side is equipped with the flash gas bleeder valve, the recovery tower is equipped with the flash gas feed valve, and the top is equipped with condenser and top of the tower outlet valve, and the bottom is equipped with reboiler and extractant recycle valve. The conveyer belt is simple in structure. Compare with ethylene glycol, when adopting this technological production high -purity ethanol, ton product energy consumption descends 26%. The high boiling point extractant includes glycerine, eutectic solvent and ionic liquid etc. The circulated use of extractant, low in production cost, efficient, it is energy -concerving and environment -protective.