Zhejiang Huakang Pharmaceutical Co., Ltd.

Weidong Xu

Mian Li

Wulong Yang

Qiang Wu

Shufang Qin

Chengjun Liao

Jiaxing Luo

Changhui Hu

Ni Zhen

Liangcong Yan

Xinping Cheng

Wenyao Zhang

Deshui Chen

The embodiments of the present disclosure provide a method for extracting xylose liquid and cellulose with high purity from corn straw. The method includes raw material screening, raw material preprocessing, alkali processing, acid hydrolysis, and gradient alkali processing. The embodiments of the present disclosure adopt a gradient selective refining method for extracting a high-purity xylose liquid and cellulose from the corn straw, so as to maximize the extraction of the xylose from the corn straw, and at the same time, to separate and extract a high-purity cellulose product from straw residue under a low-cost process processing.

Methods for extracting xylose liquid and cellulose with high purity from corn straw

Disclosed is a preparation system and a preparation method for high-quality xylitol crystals. The preparation system comprises a blending tank, a heat exchanger, a decolorization tank, an ion exchange system, a microporous filter, a first evaporator, a first crystallization kettle, a first centrifuge, a fluidization drying bed, a xylitol dissolution tank, a second evaporator, a second crystallization kettle, a second centrifuge, a hot air drying tank, and a cold air fluidization bed sequentially connected through pipelines. Liquid outlet of the first centrifuge is connected with first inlet of the blending tank. Liquid outlet of the second centrifuge is connected with first inlet of the xylitol dissolution tank. The blending tank is provided with second inlet for receiving xylitol hydrogenation solution. The xylitol dissolution tank is provided with water inlet for pure water. The material output from a product outlet of the cold air fluidization bed is xylitol crystal product. First prepared xylitol crystals are redissolved and recrystallized to prepare xylitol crystals with higher pH and better flavor.

Preparation systems and preparation methods for high-quality xylitol crystals

The embodiment of the present disclosure provides a system for co-producing a xylitol and a caramel pigment by utilizing a xylose mother liquid, including an extraction assembly, a refined hydrogenation assembly and a browning reaction assembly. The extraction assembly is configured to obtain an extracted liquid and a raffinate liquid respectively by performing an initial extraction on the xylose mother liquid; the refined hydrogenation assembly is configured to prepare a crystal xylitol by performing a refined hydrogenation process on the extracted liquid; the browning reaction assembly is configured to prepare the caramel pigment by performing a browning reaction process on the raffinate liquid.

Systems and methods for co-producing xylitol and caramel pigment by utilizing xylose mother liquid

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Quzhou, China

Weidong Xu