Systems and methods for a refinement processing of xylitol fermentation broth

A method for a refinement processing of xylitol fermentation broth, wherein the method is implemented on a system, and the method comprises:

• step 1, performing an impurity removal, rinsing, and acidolysis processing on a raw material containing xylitol to obtain fermentation raw material liquid, obtaining the xylitol fermentation broth by performing a fermentation processing using genetic engineering bacteria after performing a concentration processing on the fermentation raw material liquid until a xylose concentration is greater than a preset concentration, and performing a standing stratification processing on the xylitol fermentation broth to obtain sediments and supernatant fermentation broth respectively;
• step 2, performing a filtration processing on the supernatant fermentation broth through a ceramic membrane filter to obtain ceramic membrane discharge liquid excluding bacteria and large particle impurities;
• step 3, conveying the ceramic membrane discharge liquid to a nanofiltration membrane filter for a nanofiltration membrane filtration processing to retain impurity molecules with a molecular weight greater than a preset value to obtain nanofiltration liquid;
• step 4, performing an activated carbon filtration processing on the nanofiltration liquid by using activated carbons, and passing through ion exchange columns in sequence for an ion exchange processing to obtain xylitol ion exchange liquid;
• and
• step 5, performing the refinement processing on the xylitol ion exchange liquid through a refinement component to obtain a xylitol crystal product.