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公开(公告)号：US20250052002A1
公开(公告)日：2025-02-13
申请号：US18437611
申请日：2024-02-09
Applicant: SixRing Inc.
Inventor： Tenzin Leksmon , Leah Fraiberg , Emhemmed Youssef , Markus Weissenberger
IPC: D21C3/06 , D21C3/22 , D21C3/24 , D21C3/26 , D21C7/06 , D21C7/08 , D21C7/10 , D21C7/12 , D21C9/02
Abstract: In one example, a process includes providing a system with a first vessel and a second vessel; providing a biomass comprising lignin, hemicellulose and cellulose fibers into said first vessel; providing an aqueous acidic composition comprising an acid; providing a modifier component; providing a peroxide component; exposing said biomass to said sulfuric acid, modifier and peroxide components, creating a reaction mass; mixing said reaction mass; and 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 a pre-determined amount of said lignin from said biomass. The pre-determined amount may be assessed by determining a first remaining peroxide concentration in the reaction mass, with a suitable apparatus, when said first remaining peroxide concentration is reached, the biomass is transferred to said second vessel.
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公开(公告)号：US11982051B2
公开(公告)日：2024-05-14
申请号：US17807179
申请日：2022-06-16
Applicant: SixRing Inc.
Inventor： Markus Weissenberger , Emhemmed Youssef , Markus Pagels
Abstract: 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.-
公开(公告)号：US20220412001A1
公开(公告)日：2022-12-29
申请号：US17807179
申请日：2022-06-16
Applicant: SixRing Inc.
Inventor： Markus Weissenberger , Emhemmed Youssef , Markus Pagels
Abstract: 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.
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