Abstract: The present disclosure provides a system and method for a refinement processing of xylitol fermentation broth. The system includes a fermentation component, a filtration and impurity removal component, and a refinement component. The fermentation component is configured to perform a fermentation processing on a raw material containing xylitol to obtain sediments and supernatant fermentation broth. The filtration and impurity removal component includes a ceramic membrane filter, a nanofiltration membrane filter, an activated carbon filter, and ion exchange columns. The ceramic membrane filter is configured to filter the supernatant fermentation broth to obtain ceramic membrane discharge liquid. The nanofiltration membrane filter is configured to perform a nanofiltration membrane filtration processing on the ceramic membrane discharge liquid to obtain nanofiltration liquid.

Abstract: The present invention relates to a system for jointly producing erythritol and liquid sorbitol by using a corn starch, including a liquefaction tank, a saccharification tank, a filter and a nanofiltration assembly. The liquefaction tank is used to perform liquefaction for the corn starch, the saccharification tank is used to perform saccharification for the liquefied material, the filter is used to filter out impurities in the saccharified material to obtain a glucose liquid, and the nanofiltration assembly is used to perform nanofiltration for the filtered glucose liquid to respectively obtain a dialysate and a concentrate. The system further includes a fermentation and crystallization assembly for performing fermentation and crystallization for the dialysate to prepare crystalline erythritol, and a hydrogenation and evaporation assembly for performing hydrogenation and evaporation for the concentrate to prepare liquid sorbitol.