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    METHODS AND SYSTEMS FOR PRODUCTION OF FURFURAL
    1.
    发明公开
    METHODS AND SYSTEMS FOR PRODUCTION OF FURFURAL 审中-公开

    公开(公告)号：US20240025871A1

    公开(公告)日：2024-01-25

    申请号：US18255891

    申请日：2021-12-17

    申请人： SHELL OIL COMPANY

    发明人： Jean Paul Andre Marie Joseph Ghislain LANGE ,  Luca RICCIARDI ,  Willem VERBOOM ,  Jurriaan HÜSKENS

    IPC分类号： C07D307/50 ,  B01D11/04 ,  B01D3/14

    CPC分类号： C07D307/50 ,  B01D11/0492 ,  B01D3/143 ,  B01D2011/002

    摘要： Systems and method for production of furfural comprising combining a xylose-containing solution with an extraction solution comprising water-insoluble boronic acid to provide a first combined solution comprising an aqueous phase and a non-aqueous phase, said non-aqueous phase comprising xylose-diboronate ester (BA2X); combining at least a portion of the non-aqueous phase with a conversion solution to form a second combined solution, heating the second combined solution to convert at least a portion of the xylose-diboronate ester into furfural to a temperature at or above which the second combined solution consists essentially of a homogeneous liquid phase, cooling down the heated second combined solution to a temperature wherein the cooled second combined solution comprises an aqueous phase comprising water and furfural and (ii) a non-aqueous phase comprising water-insoluble boronic acid and furfural.

    Bi-phasic continuous-flow tubular reactor and heterogeneous catalysts preparation method for production of 5-hydroxymethyl furfural
    3.
    发明授权
    Bi-phasic continuous-flow tubular reactor and heterogeneous catalysts preparation method for production of 5-hydroxymethyl furfural 有权

    公开(公告)号：US11352336B2

    公开(公告)日：2022-06-07

    申请号：US16621632

    申请日：2017-06-29

    申请人： THE UNIVERSITY OF WESTERN ONTARIO

    发明人： Chunbao Xu ,  Sadra Souzanchi ,  Tirumala Venkateswara Rao Kasanneni ,  Zhongshun Yuan

    IPC分类号： C07D307/50 ,  B01J8/00 ,  B01J8/06 ,  B01J23/20 ,  B01J27/18 ,  B01J27/195 ,  B01J31/10

    摘要： Disclosed is a cost-effective process for catalytic conversion of simple C6-based sugars (such as glucose and fructose) and industrial-grade sugar syrups derived from starch (such as different grades of High Fructose Corn Syrup) and cellulosic biomass to 5-HydroxyMethylFurfural (5-HMF) in a continuous-flow tubular reactor in bi-phasic media using inexpensive heterogeneous solid catalysts. Commercial and synthesized heterogeneous solid catalysts were used and their activities in terms of sugar conversion and HMF selectivity and yield were compared. Continuous dehydration of fructose, glucose and industrial-grade sugar syrups derived from corn and wood to HMF was achieved and the stability of selected catalysts and feasibility of catalyst recycling and regeneration were demonstrated. The performance of the catalysts and reactor system were examined under different operating conditions including reaction temperature, feeding flow rate, initial feedstock concentration, catalyst loading, presence of extracting organic solvent and phase transfer catalyst and aqueous to organic phase ratio. At the best operating conditions, HMF yield attained 60%, 45% and 53%, from dehydration of fructose, glucose and HFCS-90, respectively.

    System and method for continuously preparing furfural using acid-containing pentose solution
    5.
    发明授权
    System and method for continuously preparing furfural using acid-containing pentose solution 有权

    公开(公告)号：US11142510B2

    公开(公告)日：2021-10-12

    申请号：US16894564

    申请日：2020-06-05

    申请人： ECO Environmental Energy Research Institute Limited

    发明人： Bin Xu ,  Kam Shing Siu ,  Junde Lu ,  Connie Hiu Ying Chow

    IPC分类号： C07D307/50

    摘要： The present invention discloses a system and a method for continuously preparing furfural using an acid-containing pentose solution. The system comprises a stripping reaction column, a separation unit, and a purification unit. The method comprises a stripping reaction step, a separation step, and a purification step. The system and the method of the present invention can use a liquid inorganic acid as a catalyst, has a strong catalytic capability and a low reaction temperature, and is capable of treating low concentration sugar liquids. The present invention adopts heating through directly vapor stripping to rapidly carry away a generated furfural along with the vapor while reacting a pentose, avoiding side reactions of the furfural in an acidic liquid environment. The reaction process of the present invention does not require any extracting agent, and the furfural carried away along with the vapor is easy to separate after cooling. The whole process has a reasonable design, high furfural yields and low unit energy consumption.

    METHOD FOR PREPARING FURFURAL
    7.
    发明申请
    METHOD FOR PREPARING FURFURAL 有权

    公开(公告)号：US20210206737A1

    公开(公告)日：2021-07-08

    申请号：US17056927

    申请日：2019-09-26

    申请人： GUANGZHOU YINNOVATOR BIOTECH CO., LTD.

    发明人： Yunsi LIU ,  Ruizhe ZHANG

    IPC分类号： C07D307/50

    摘要： Provided is a method for preparing furfural. The method comprises: mixing a plant raw material and an acid containing a —SO3H functional group for pre-treating, then mixing same with an organic acid, cooking same, and then subjecting same to solid-liquid separation, so as to obtain a hemicellulose sugar solution; introducing the resulting hemicellulose sugar solution from the upper part of a reaction kettle, and at the same time, introducing an acetic acid steam from the lower part of the reaction kettle, such that the sugar solution and the acetic acid steam come into contact in a counter-current manner and react so as to form a furfural steam; after the reaction is completed, discharging the furfural steam from the upper part of the reaction kettle; and cooling same so as to obtain a solution containing furfural. In the method, by means of firstly pre-treating the plant raw material using the acid containing a —SO3H functional group, and then cooking same with the organic acid, the hydrolysis rate of pentosan in a hemicellulose can reach 99% or more, thus achieving efficient use of valuable substances in the raw material. In addition, the method relates to a process for discharging the furfural steam in batches and semi-continuously, has an improved furfural production rate, which rate can reach 65-75%, and has good economic benefits and application prospects.

    A PROCESS FOR THE CONVERSION OF A SOLID LIGNOCELLULOSIC MATERIAL
    10.
    发明申请
    A PROCESS FOR THE CONVERSION OF A SOLID LIGNOCELLULOSIC MATERIAL 有权

    公开(公告)号：US20210032216A1

    公开(公告)日：2021-02-04

    申请号：US16965746

    申请日：2019-01-31

    申请人： Furanix Technologies B.V.

    发明人： Robert-Jan van Putten ,  Benjamin McKay ,  Gerardus Johannes Maria Gruter ,  Jan Cornelis van der Waal

    IPC分类号： C07D307/50 ,  B01D11/02

    摘要： A process for the conversion of solid lignocellulosic material containing hemicellulose, cellulose and lignin, includes (a) hydrolyzing, at a temperature equal to or less than 40° C. at least part of the hemicellulose and at least part of the cellulose of the solid lignocellulosic material with an aqueous hydrochloric acid solution, containing in the range from equal to or more than 40.0 wt. % to equal to or less than 51.0 wt. % hydrochloric acid, based on the combined weight amount of water and hydrochloric acid in the aqueous hydrochloric acid solution; yielding a hydrochloric acid-containing, aqueous hydrolysate solution; (b) separating the hydrochloric acid-containing, aqueous hydrolysate solution from the lignin; and (c) heating at least part of the hydrochloric acid-containing, aqueous hydrolysate solution to a temperature equal to or more than 60° C., yielding a product solution containing 5-(chloromethyl)furfural, and extracting the 5-(chloromethyl)furfural from the product solution into an extraction solvent.