Recrystallization device for trehalose

The utility model relates to a recrystallization device for trehalose. The device comprises a dissolving kettle, a precision filter, a concentration crystallization kettle, a centrifugal machine, a mother liquor recovery kettle and a solvent recovery tank, the dissolving kettle, the precision filter, the concentration crystallization kettle, the centrifugal machine and the mother liquor recovery kettle are sequentially connected through pipelines, and a distillation solvent outlet is formed in the upper portion of the concentration crystallization kettle and connected with the solvent recoverytank through a pipeline; the concentrating and crystallizing kettle is provided with a heating device and a tooth-shaped stirrer, and a temperature measuring pipe is arranged on the inner side of thekettle bottom. The trehalose purification device can be used for effectively purifying a trehalose crude product, and the HPLC purity of the product can reach 99.6%. The device is simple in structure, waste liquid discharge c