The dextrose vacuum pan integrates concentration, evaporation and crystallization, which is used for crystallization of heat-sensitive materials. It is suitable for fine chemical industry, biological engineering, pharmaceutical and other industries, and can be designed and manufactured in various specifications according to material parameters and scale. The characteristics of dextrose vacuum pan: internal heat and forced circulation stirring, is a type of evaporative crystallization. After the cooling crystallization after vacuum evaporation, the crystal seeds are added, and the vacuum degree is used to adjust the evaporation temperature, control the supersaturation, control the growth of crystal and the precipitation of crystal nucleus. The agitator is a propulsive blade to promote the circulation of sugar liquid.