Method for producing xylitol by using hydrolysate of eucalyptus chips, and hydrolysis tower

摘要: The present invention specifically relates to a method for producing xylitol by pre-extracting hydrolysate from eucalyptus dissolving pump chips, and further hydrolysis tower used in the hydrolyzation process. Disclosed is method. chips comprises following steps: pre-hydrolyzing chips; performing acid-hydrolysis on pre-hydrolized hydrolysate, decoloration, ion-exchange purification, concentration crystallization processing obtain xylose; dissolution, hydrogenation, decoloration purification xylose xylitol. Pre-hydrolyzation of performed tower. After pre-hydrolyzation, extracted hydrolysate. Continuous feed-in continuous solves problem low efficiency due complex processes, such as putting materials pot, adding acid liquid, hydrolyzation, extraction discharging, required an intermittent process prior art.