In this invention, the impurity removal section and wine extraction section of mellow wine tower are separately installed; a refining distillation section is only arranged in refining tower; and the extracting distillation section and the wine extraction section of mellow wine tower are used in combination and placed at the same level. An intermediate storage tank and a reflux pump are set up for enforcing reflux in tower. The technique can obviously improve the quality of alcohol for meeting edible demand. |