Production method and device for xylose

• Main Authors: WANG JINRONG, YANG WENYIN, ZHAO SHIMING, YANG JIHENG, FAN KEYIN, ZHANG YU, XIONG FUJUN, LI XINHUI, ZHU CHUANLIU, PENG WENBO
• Format: Patent
• Language: Chinese; English
• Published: 10.04.2018
• Subjects: CHEMISTRY; METALLURGY; SACCHARIDES, OTHER THAN SUCROSE, OBTAINED FROM NATURAL SOURCESOR BY HYDROLYSIS OF NATURALLY OCCURRING DI-, OLIGO- ORPOLYSACCHARIDES; SUGAR INDUSTRY

The invention provides a production method for xylose, wherein corncobs, bagasse or other wood fibers are used as raw materials in the method. The method comprises the steps: 1) carrying out acid hydrolysis to obtain a xylose-containing solution; 2) carrying out activated carbon decoloration to obtain a decolorized solution; 3) making the decolorized solution enter a nanofiltration membrane recovery system, and recycling a clear liquid for next acid hydrolysis of a raw material; 4) increasing the concentration of xylose in the obtained concentrated solution, carrying out primary evaporation concentration, then, entering a chromatographic system to carry out impurity removal and desalination to obtain a chromatographic eluent; and 5) carrying out nanofiltration membrane decoloration, membrane concentration, secondary evaporation concentration, activated carbon decoloration, ion exchange, vacuum concentration and crystal centrifugation to obtain a high-quality xylose crystal. 本发明提供了种木糖的生产方法。其中，该方法包括，利用玉米芯、甘蔗渣或其