System and method for preparing xylose liquid by continuously hydrolysis of Hemicellulose

摘要

The present invention relates to a system for continuously hydrolysis of hemicellulose to prepare xylose liquid.The system comprises a neutralization unit, an acid adjustment unit, a supply unit, a liquid injection unit, a supply and discharge heat exchange unit, and a discharge control unit.Neutralizing unitRaw material canChuaou sulfate pumpIncluding neutralizer mixerAcid adjustment unit is acid adjusted concentrated sulfuric acid pumpIncludes an acid adjustment tube mixer and an acid adjusterThe supply unit includes a supply can.Liquefied injection unit includes liquefaction injector and liquefaction maintenance device.The supply and exhaust heat exchange unit includes a supply and discharge plate heat exchanger and a first exhaust temperature sensor;The discharge control unit includes a discharge valve and a reflux valve.Since the prepared xylose solution exchanges heat with the hemicellulose solution in the supply and discharge plate heat exchanger, the temperature of the xylose solution becomes lower and the temperature of the hemicellulose solution rises.The present invention further discloses a method for using the system.The present invention is capable of greatly reducing energy consumption by simultaneously supplying supply and discharge heat exchange, and continuously supplying and discharging continuously, thereby improving the production efficiency and simplifying the manual operation.Diagram