Zhejiang Huakang Pharmaceutical Co., Ltd.

Zhejiang University

Jiaozuo Huakang Polyol Co., Ltd.

Yuan Zhou

Chengjun Liao

Songtao Jiang

Guowei Luo

Yuguo Zheng

Mian Li

Zhiqiang Liu

Jiaxing Luo

Xiaojian Zhang

Yi Zheng

Shuncheng Fang

Xiaoyang Zheng

Xuesong Jiang

Deshui Chen

Zhiqian Liu

Related to is a system for preparing xylose liquid by continuously hydrolyzing hemicellulose, including a neutralizing unit, an acid-adjusting unit, a feeding unit, a liquefaction ejecting unit, a feed and discharge heat-exchanging unit and a discharge controlling unit. The neutralizing unit includes a raw material tank, a neutralizing concentrated sulfuric acid pump and a neutralizing pipeline mixer, the acid-adjusting unit includes an acid-adjusting concentrated sulfuric acid pump, an acid-adjusting pipeline mixer and an acid-adjusting tank, the feeding unit includes a feed tank, the liquefaction ejecting unit includes a liquefaction ejector and a liquefaction maintainer, the feed and discharge heat-exchanging unit includes a plate-type teed and discharge heat exchanger and a first discharge temperature sensor, and the discharge controlling unit includes a discharge valve and a reflux valve. The obtained xylose liquid exchanges heat with the hemicellulose liquid in the plate-type feed and discharge heat exchanger to decrease a temperature of the xylose liquid, whereas a temperature of the hemicellulose liquid is increased. Further disclosed is a method using the system. The simultaneous feed and discharge heat exchanges greatly reduce energy consumption, and feed and exchange are continuously run, thereby improving the production efficiency and simplifying manual operations.

System for preparing xylose liquid by continuously hydrolyzing hemicellulose and method thereof

Related to are a device and a method for performing continuous carbonation and impurity removal for xylose mother liquor. The device includes an alkali addition unit, a continuous carbonating unit, a discharge controlling unit, a COsupply station, a vapor station and an after-carbonation tank, wherein the alkali addition unit is configured to add Ca(OH)alkaline liquid into xylose mother liquor, the continuous carbonating unit is configured to introduce COsupplied from the COsupply station into the alkali-added xylose mother liquor to perform carbonation and mixing so as to remove impurities such as colloid and pigment in xylose mother liquor, the discharge controlling unit is configured to introduce COsupplied from the COsupply station and vapor transported from the vapor station into the carbonated xylose mother liquor so as to control and stabilize a pH value of the carbonated xylose mother liquor, and the after-carbonation tank is configured to collect and temporarily store the carbonated and impurity-removed xylose mother liquor so as to prepare for a next procedure. Further, a method using the device is disclosed. According to the device and the method, the pH of xylose mother liquor is continuously regulated and stabilized and continuous feeding and discharge are performed with highly automated device so as to achieve continuous and uninterrupted production, and thus facilitate improving the production efficiency.

Device and method for performing continuous carbonation and impurity removal for xylose mother liquor

Growing community of inventors

Zhejiang, China

Yuan Zhou