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1. 发明公开

EP4303207A1 REFINEMENT SYSTEM FOR XYLITOL FERMENTED LIQUID, AND METHOD THEREFOR 审中-实审
公开(公告)号：EP4303207A1
公开(公告)日：2024-01-10
申请号：EP22913660.1
申请日：2022-10-13
申请人： Zhejiang Huakang Pharmaceutical Co., Ltd.
发明人： LI, Mian , ZHEN, Ni , LUO, Jiaxing , HU, Changhui , WU, Qiang , YANG, Wulong , ZENG, Fangming
IPC分类号： C07C29/76 , C07C29/78 , C07C31/18
摘要： The present invention relates to a system for a refinement processing of a xylitol fermentation broth, the system includes a fermentation tank, a post-fermentation tank, a ceramic membrane filter, a nanofiltration membrane filter, an activated carbon filter, ion exchange columns, an evaporation tank, a crystallization tank, a centrifuge, and a dryer, which are connected by pipelines. The post-fermentation tank is configured to store the xylitol fermentation broth obtained from the fermentation tank and obtain sediments and supernatant fermentation broth through a standing stratification processing. The ceramic membrane filter, the nanofiltration membrane filter, the activated carbon filter, and the ion exchange columns are configured to perform a filtration and impurity removal processing successively on the supernatant fermentation broth to obtain xylitol ion exchange liquid. The evaporation tank and the crystallization tank are configured to perform an evaporation and crystallization processing on the xylitol ion exchange liquid to obtain xylitol massecuite. The centrifuge is configured to perform a separation processing on the xylitol massecuite to obtain a crystal xylitol and mother liquor respectively. The dryer is configured to perform a drying processing on the crystal xylitol to obtain a refined xylitol crystal product. The present disclosure also discloses a method implemented on the system. The present disclosure significantly reduces an amount of activated carbons, increases a pH value of liquid, and significantly reduces an electrical conductivity and a load of a subsequent ion exchange processing.

2. 发明公开

EP4023773A1 SYSTEM AND METHOD FOR REDUCING CONTENT OF 5-HYDROXYMETHYLFURFURAL IN HIGH-FRUCTOSE CORN SYRUP 有权
公开(公告)号：EP4023773A1
公开(公告)日：2022-07-06
申请号：EP21753256.3
申请日：2021-02-07
申请人： Zhejiang Huakang Pharmaceutical Co., Ltd.
发明人： CHEN, Shengrong , ZHUGE, Jun , CHENG, Yuqing , HAN, Xinfeng , LUO, Jiaxing
IPC分类号： C13K1/08 , B01J47/04 , B01J47/028
摘要： The present invention relates to a system for reducing a content of 5-hydroxymethylfurfural in a high fructose syrup, including an ion exchange positive column and an ion exchange negative column for performing cation and anion removals in sequence for an F42 high fructose syrup obtained by performing isomerization and first decolorization, a heat exchanger for performing heat exchange and temperature reduction for an F55 high fructose syrup obtained by performing concentration, chromatographic separation, blending and second decolorization in sequence for the F42 high fructose syrup subjected to ion exchange, a mixed bed column for performing purification for the heat-exchanged F55 high fructose syrup, and an evaporation tank for performing concentration for the F55 high fructose syrup subjected to mixed bed treatment. The present invention further provides a method of reducing a content of 5-hydroxymethylfurfural in a high fructose syrup. In the present invention, optimization is performed for ion exchange and operation modes and parameters of the mixed bed such that the HMF content in the high fructose syrup product is reduced in a case of ensuring the quality of the high fructose syrup product, thus improving the quality of the high fructose syrup product.

3. 发明公开

EP3798324A1 XYLOSE MOTHER LIQUOR CONTINUOUS CARBONATION AND IMPURITY-REMOVAL DEVICE AND METHOD THEREFOR 有权
公开(公告)号：EP3798324A1
公开(公告)日：2021-03-31
申请号：EP19898094.8
申请日：2019-12-06
申请人： Zhejiang Huakang Pharmaceutical Co., Ltd. , Zhejiang University of Technology
发明人： LUO, Jiaxing , LUO, Guowei , LIAO, Chengjun , JIANG, Songtao , ZHOU, Yuan , CHEN, Deshui , LIU, Zhiqian , ZHANG, Xiaojian , ZHENG, Yuguo , LI, Mian
IPC分类号： C13K13/00
摘要： 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 CO 2 supply station, a vapor station and an after-carbonation tank, wherein the alkali addition unit is configured to add Ca(OH) 2 alkaline liquid into xylose mother liquor, the continuous carbonating unit is configured to introduce CO 2 supplied from the CO 2 supply 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 CO 2 supplied from the CO 2 supply 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.

4. 发明公开

EP4424693A1 PREPARATION METHOD FOR HIGH-PURITY ARABINOSE CRYSTAL 审中-实审
公开(公告)号：EP4424693A1
公开(公告)日：2024-09-04
申请号：EP23892745.3
申请日：2023-05-25
申请人： Zhejiang Huakang Pharmaceutical Co., Ltd.
发明人： HAN, Xinfeng , LI, Dongxu , YANG, Minqian , LIAO, Chengjun , QIN, Shufang , LUO, Jiaxing
IPC分类号： C07H3/02 , C07H1/06
CPC分类号： C07H1/06 , C07H3/02
摘要： The present disclosure relates to a method for preparing a high-purity arabinose crystal, comprising operations of dissolving, blending, ion exchange, decolorization and filtration, fine filtration, evaporation and concentration, crystallization, centrifugation, and drying performed in sequence on a low-purity arabinose crystal. Throughout the operations of preparing the arabinose crystal, a pH value of a material is controlled between 4.3 and 7.5, and a temperature does not exceed 70°C. This prevents arabinose from transforming into impurities under a high temperature, thereby maintaining and improving a purity of the prepared arabinose crystal.

5. 发明公开

EP4023760A1 METHOD FOR PREPARING SORBITOL LIQUID AND LIQUID POLYOL BY USING MALTITOL RAFFINATE 有权
公开(公告)号：EP4023760A1
公开(公告)日：2022-07-06
申请号：EP21753784.4
申请日：2021-02-07
申请人： Zhejiang Huakang Pharmaceutical Co., Ltd.
发明人： MAO, Baoxing , WANG, Xiuxiu , CHEN, Deshui , LUO, Jiaxing , CHENG, Xinping
IPC分类号： C12P7/18
摘要： The present invention provides a method of preparing a sorbitol liquid and a liquid polyol using a maltitol raffinate. The method includes the steps of: obtaining a saccharification liquid by adding glucoamylase to the maltitol raffinate for saccharification; obtaining a fermentation liquid by adding a dry yeast to the above saccharification liquid for fermentation; obtaining the sorbitol liquid and the liquid polyol by performing decolorization filtration and membrane separation for the above fermentation liquid. The present invention can fully utilize the maltitol raffinate to increase its added value. Further, the method is simple, practical and low in costs.

6. 发明公开

EP4424908A1 METHOD FOR EXTRACTING HIGH-PURITY XYLOSE LIQUID AND CELLULOSE FROM CORN STRAW 审中-实审
公开(公告)号：EP4424908A1
公开(公告)日：2024-09-04
申请号：EP23892742.0
申请日：2023-05-25
申请人： Zhejiang Huakang Pharmaceutical Co., Ltd.
发明人： LI, Mian , HU, Changhui , YAN, Liangcong , LUO, Jiaxing , YANG, Wulong , XU, Weidong , WU, Qiang
IPC分类号： D21C5/00 , C13K13/00
CPC分类号： C13K13/00 , D21C5/00
摘要： 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 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.

7. 发明公开

EP4299752A1 SYSTEM AND METHOD FOR PRODUCING CELLULOSIC ETHANOL BY MEANS OF SACCHARIFICATION AND FERMENTATION OF BIOMASS 审中-实审
公开(公告)号：EP4299752A1
公开(公告)日：2024-01-03
申请号：EP22897056.2
申请日：2022-05-10
申请人： Zhejiang Huakang Pharmaceutical Co., Ltd.
发明人： HU, Changhui , LUO, Jiaxing , LI, Mian , LIAO, Chengjun , YANG, Wulong , YAN, Liangcong , ZHEN, Ni , CHEN, Lanlan
IPC分类号： C12P7/10 , C12M1/40 , C12M1/00
摘要： The present disclosure provides a system for producing cellulosic ethanol by biomass saccharification and fermentation. The system includes a reactor A configured to carry out an enzymatic hydrolysis reaction of a biomass feedstock, a reactor B configured to carry out a fermentation reaction of the biomass feedstock, and a collection tank configured to collect the cellulosic ethanol produced from the fermentation reaction of the biomass feedstock. The reactor A is connected to the reactor B, the storage tank, and the collection tank, and the reactor B is connected to the storage tank. The present disclosure also provides a method for preparing cellulosic ethanol implemented by the system, by which multiple cycles processes of enzymatic hydrolysis, fermentation, and the ethanol extraction are carried out on the biomass feedstock at intervals, thereby reducing the inhibitory effect of the ethanol accumulation on the hydrolysis and fermentation processes and improving the conversion rate of the cellulosic ethanol. By setting a storage tank, two batches of materials can be processed simultaneously in one system, thereby greatly improving the production efficiency of cellulosic ethanol.

8. 发明公开

EP4298923A1 METHOD FOR PREVENTING CAKING OF XYLITOL AND CALCIUM ASPARTATE MIXTURE 审中-实审
公开(公告)号：EP4298923A1
公开(公告)日：2024-01-03
申请号：EP22906187.4
申请日：2022-11-21
申请人： Zhejiang Huakang Pharmaceutical Co., Ltd.
发明人： MAO, Baoxing , LIAO, Chengjun , WANG, Xiuxiu , WEI, Zhiyao , WU, Aijuan , LUO, Jiaxing , LIN, Cui , LI, Mian
IPC分类号： A23L33/16 , A23L33/125 , A23P10/43
摘要： The present disclosure relates to a method for preventing agglomeration in a mixture of xylitol and calcium aspartate. The method includes the following steps: first adjusting and measuring water activities of xylitol particles and calcium aspartate particles; then mixing the calcium aspartate particles with a water activity of 0.50-0.52 with the xylitol particles with a water activity of 0.48-0.56, or mixing the calcium aspartate particles with a water activity of 0.52-0.58 with the xylitol particles with a water activity of 0.50-0.60, or adding maltitol particles with a weight ratio of 5%-20% to the xylitol particles to a mixture of the calcium aspartate particles and the xylitol particles. By controlling the water activities of the xylitol particles and calcium aspartate particles, or by adding maltitol in the mixture, agglomeration of the mixture can be effectively prevented, and the method is applicable to mixtures of various xylitol raw materials.

9. 发明公开

EP4186979A1 SYSTEM AND METHOD FOR CO-PRODUCING ERYTHRITOL AND LIQUID SORBITOL BY USING CORN STARCH 审中-实审
公开(公告)号：EP4186979A1
公开(公告)日：2023-05-31
申请号：EP21942760.6
申请日：2021-11-30
申请人： Zhejiang Huakang Pharmaceutical Co., Ltd.
发明人： ZHENG, Yi , WU, Aijuan , FANG, Shuncheng , LIAO, Chengjun , CHEN, Lanlan , LUO, Jiaxing , HU, Changhui , ZENG, Fangming , LI, Mian
IPC分类号： C12P7/18 , B01D61/00 , C07C29/76
摘要： The present invention relates to a system for jointly producing erythritol and liquid sorbitol by using a corn starch, including a liquefaction tank, a saccharification tank, a filter and a nanofiltration assembly. The liquefaction tank is used to perform liquefaction for the corn starch, the saccharification tank is used to perform saccharification for the liquefied material, the filter is used to filter out impurities in the saccharified material to obtain a glucose liquid, and the nanofiltration assembly is used to perform nanofiltration for the filtered glucose liquid to respectively obtain a dialysate and a concentrate. The system further includes a fermentation and crystallization assembly for performing fermentation and crystallization for the dialysate to prepare crystalline erythritol, and a hydrogenation and evaporation assembly for performing hydrogenation and evaporation for the concentrate to prepare liquid sorbitol. The present invention further provides a method of jointly producing erythritol and liquid sorbitol by using a corn starch. The present invention not only improves the purity of erythritol but also obtains liquid sorbitol, thus improving the utilization value of the corn starch.

10. 发明公开

EP4170015A1 METHOD FOR PREPARING XYLITOL BY FERMENTING XYLOSE SECONDARY MOTHER LIQUOR 审中-实审
公开(公告)号：EP4170015A1
公开(公告)日：2023-04-26
申请号：EP21913710.6
申请日：2021-11-30
申请人： Zhejiang Huakang Pharmaceutical Co., Ltd. , Zhejiang University of Technology
发明人： ZENG, Xuhao , LUO, Jiaxing , WANG, Jing , HU, Changhui , FANG, Shuncheng , LIU, Zhiqian , CAI, Xue , ZHANG, Xiaojian , ZHENG, Yuguo , LI, Mian
IPC分类号： C12N1/20 , C12N1/38 , C12P7/18 , C12R1/19
摘要： The present invention relates to a method of preparing xylitol by using a xylose secondary mother liquor through fermentation. In the method, fermentation treatment is performed on a mixed liquid of the xylose secondary mother liquor and a xylose concentrate, and the xylose secondary mother liquor is subsequently batch-fed instead of glucose in the fermentation process. Thus, a glucose content in the fermentation system is stabilized, and some xylose is provided at the same time. In this way, the use amount of glucose and costs are reduced, and the system xylose can be relatively stabilized, thus improving the entire conversion rate. In the present invention, adding the xylose secondary mother liquor by mixed fermentation and batch feeding and the like enables the contents of heterosaccharides such as arabinose and mannose in the fermentation system to be always within a range of metabolization by fermenting strains, facilitating subsequent purification and improving the xylitol purity.

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