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    Temperature-controlled delignification of biomass
    2.
    发明授权
    Temperature-controlled delignification of biomass 有权

    公开(公告)号：US11982051B2

    公开(公告)日：2024-05-14

    申请号：US17807179

    申请日：2022-06-16

    申请人： SixRing Inc.

    发明人： Markus Weissenberger ,  Emhemmed Youssef ,  Markus Pagels

    IPC分类号： D21C3/00 ,  D21C3/04

    CPC分类号： D21C3/003 ,  D21C3/04

    摘要： A process to delignify biomass, said process comprising the steps of:



    providing a vessel;
    providing biomass comprising lignin, hemicellulose and cellulose fibers into said vessel;
    providing a aqueous acidic composition comprising a sulfuric acid component;
    providing a peroxide component;
    exposing said biomass to said sulfuric acid component and peroxide component, creating a reaction mass;
    allowing said sulfuric acid component and peroxide component to come into contact with said biomass for a period of time sufficient to a delignification reaction to occur and remove over 90 wt % of said lignin and hemicellulose from said biomass; and
    controlling the temperature of the delignification reaction to maintain it below 55° C.

    METHOD FOR SEPARATING BIOMASS COMPONENTS BY TERNARY SYSTEM
    3.
    发明公开
    METHOD FOR SEPARATING BIOMASS COMPONENTS BY TERNARY SYSTEM 审中-公开

    公开(公告)号：US20230323597A1

    公开(公告)日：2023-10-12

    申请号：US17978444

    申请日：2022-11-01

    申请人： Qilu University of Technology

    发明人： Yongchao Zhang ,  Menghua Qin ,  Yingjuan Fu

    IPC分类号： D21C11/10 ,  D21C9/16 ,  D21H11/02 ,  D21C3/00 ,  D21C3/04 ,  D21C5/00

    CPC分类号： D21H11/02 ,  D21C3/003 ,  D21C3/04 ,  D21C5/00 ,  D21C9/163 ,  D21C11/10

    摘要： A method for separating biomass components by a ternary system, which relates to a technical field of biomass separation, and includes the following steps of: cooking and separating a biomass raw material by using a cooking liquor consisting of organic acid, small aromatic nucleophilic organic molecule and hydrogen peroxide to obtain solid residue and extracting solution, washing and screening the solid residue to obtain paper pulp, and separating and extracting lignin and/or hemicellulose from the extracting solution. This cooking system could effectively minimize the content of residual lignin and other compounds with chromophore groups in the obtained pulp, directly producing the high-whiteness pulp with excellent performance without additional bleaching process. In addition, the hemicellulose saccharides and high-activity lignin can be also obtained, so that the method has an important significance for realizing high value and industrialization of biomass resource utilization.

    Low energy production process for producing paper pulp from lignocellulosic biomass
    4.
    发明授权
    Low energy production process for producing paper pulp from lignocellulosic biomass 有权

    公开(公告)号：US11624152B2

    公开(公告)日：2023-04-11

    申请号：US16969700

    申请日：2018-12-13

    申请人： BIOEB

    发明人： Michel Delmas

    IPC分类号： D21C3/00 ,  D21C9/02 ,  D21C11/00 ,  C08H7/00 ,  D21C9/18 ,  D21H11/02 ,  C08B37/00 ,  C10J3/72 ,  D21C3/20 ,  D21C3/04

    摘要： A low energy production process for producing paper pulp from lignocellulosic biomass, the process comprising the following successive steps: a) extracting lignins and hemicellulose from lignocellulosic biomass by putting at least one solid lignocellulosic raw material in the presence of a mixture, composed only of water and of formic acid, at atmospheric pressure and under controlled conditions of reaction temperature between ambient temperature and the reflux temperature of the mixture at atmospheric pressure, preferably between 80° C. and 100° C., with a weight ratio of the at least one solid lignocellulosic raw material/liquid mixture comprised between 1/1 and 1/15, and for a determined period of time of reaction; and b) separating, at atmospheric pressure and at the reaction temperature, a solid fraction, constituting raw paper pulp, from an organic phase containing in solution at least the starting formic acid and water mixture, solubilized monomeric and polymeric sugars, lignins.

    TEMPERATURE-CONTROLLED DELIGNIFICATION OF BIOMASS
    5.
    发明申请
    TEMPERATURE-CONTROLLED DELIGNIFICATION OF BIOMASS 有权

    公开(公告)号：US20220412001A1

    公开(公告)日：2022-12-29

    申请号：US17807179

    申请日：2022-06-16

    申请人： SixRing Inc.

    发明人： Markus Weissenberger ,  Emhemmed Youssef ,  Markus Pagels

    IPC分类号： D21C3/00 ,  D21C3/04

    摘要： A process to delignify biomass, said process comprising the steps of: providing a vessel; providing biomass comprising lignin, hemicellulose and cellulose fibers into said vessel; providing a aqueous acidic composition comprising a sulfuric acid component; providing a peroxide component; exposing said biomass to said sulfuric acid component and peroxide component, creating a reaction mass; allowing said sulfuric acid component and peroxide component to come into contact with said biomass for a period of time sufficient to a delignification reaction to occur and remove over 90 wt % of said lignin and hemicellulose from said biomass; and controlling the temperature of the delignification reaction to maintain it below 55° C.

    Method for extracting biomass
    8.
    发明授权
    Method for extracting biomass 有权

    公开(公告)号：US11377790B2

    公开(公告)日：2022-07-05

    申请号：US16796898

    申请日：2020-02-20

    申请人： CH-Bioforce Oy

    发明人： Sebastian Von Schoultz

    IPC分类号： D21C3/00 ,  C08H8/00 ,  C08H7/00 ,  D21C1/02 ,  D21C1/10 ,  C13K13/00 ,  C10L5/44 ,  C10L5/36 ,  C07G1/00

    摘要： Method for extraction of biomass with water in order to separate hemicelluloses from a fibrous structure. The biomass is impregnated under reduced pressure with the extraction fluid in order to prevent the degradation of the components to be extracted. During extraction the extract is circulated through the fiber matrix in order to remove unwanted components from the extract. The extract is reused for extracting untreated biomass in order to increase the consistency of the extract.