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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
发明人： LI, Mian , HU, Changhui , YAN, Liangcong , LUO, Jiaxing , YANG, Wulong , XU, Weidong , WU, Qiang
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.
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2.发明公开
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
发明人： HU, Changhui , LUO, Jiaxing , LI, Mian , LIAO, Chengjun , YANG, Wulong , YAN, Liangcong , ZHEN, Ni , CHEN, Lanlan
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.
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