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公开(公告)号：US12005418B2
公开(公告)日：2024-06-11
申请号：US17049196
申请日：2019-03-29
申请人： VALMET AB
CPC分类号： B01J19/20 , B01J3/042 , D21C1/02 , D21C1/04 , D21C7/06 , D21C7/08 , B01J2219/00051 , B01J2219/182 , B01J2219/1943
摘要： A reactor vessel (1) for biomass material, wherein said reactor vessel (1) is a pressurized reactor vessel, said reactor vessel being elongated and comprising: a substantially tubular vessel part (3); two gables (5a, 5b) connected one to each end (19a, 19b) of the tubular vessel part (3), hereby enclosing a vessel internal compartment (7); and a material transporting screw (8) comprising a central shaft (9) provided within the vessel internal compartment (7) extending between the two gables (5a, 5b) along a central axis (A) of the reactor vessel (1), wherein said material transporting screw further comprises screw flight (11) provided around the shaft (9), wherein said material transporting screw is configured for transporting the biomass material through the reactor vessel, wherein both gables (5a, 5b) are inwardly dished.
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公开(公告)号：US20230374730A1
公开(公告)日：2023-11-23
申请号：US17746826
申请日：2022-05-17
摘要： The APPARATUSES, METHODS AND SYSTEMS FOR APPARATUSES, METHODS AND SYSTEMS FOR YIELD INCREASE IN A KRAFT COOKING PLANT present synergies for at least two parallel cooking plants, e.g., one producing dissolving pulp in a prehydrolysis kraft process, and the other producing kraft pulp by kraft pulping process, which may facilitate increased cooking yield in the kraft cooking plant producing kraft pulp by recovering the hemicelluloses solubilized in the acidic hydrolysate of the prehydrolysis kraft process. In some implementations, there may be no cold caustic extraction step on the dissolving pulp line as the target pulp purity can be achieved by performing just a prehydrolysis step, with reutilization of an acidic hydrolysate stream in a kraft pulp line.
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公开(公告)号：US20220348968A1
公开(公告)日：2022-11-03
申请号：US17594970
申请日：2020-04-02
申请人： IOGEN CORPORATION
摘要： A process for producing a fuel from lignocellulosic biomass is disclosed. The process includes obtaining a feedstock comprising lignocellulosic biomass, pretreating a slurry containing the lignocellulosic feedstock, sulfur dioxide, and optionally a bisulfite salt, at temperatures between 110° C. and 160° C. for at least 30 minutes. The pretreatment includes subjecting the slurry to a pH adjustment, which includes adding alkali to the slurry, removing lignosulfonic acid from the slurry, or a combination thereof.
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公开(公告)号：US20210237024A1
公开(公告)日：2021-08-05
申请号：US17049196
申请日：2019-03-29
申请人： VALMET AB
摘要： A reactor vessel (1) for biomass material, wherein said reactor vessel (1) is a pressurized reactor vessel, said reactor vessel being elongated and comprising: a substantially tubular vessel part (3); two gables (5a, 5b) connected one to each end (19a, 19b) of the tubular vessel part (3), hereby enclosing a vessel internal compartment (7); and a material transporting screw (8) comprising a central shaft (9) provided within the vessel internal compartment (7) extending between the two gables (5a, 5b) along a central axis (A) of the reactor vessel (1), wherein said material transporting screw further comprises screw flight (11) provided around the shaft (9), wherein said material transporting screw is configured for transporting the biomass material through the reactor vessel, wherein both gables (5a, 5b) are inwardly dished.
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5.发明授权公开(公告)号：US10519477B2
公开(公告)日：2019-12-31
申请号：US15758727
申请日：2016-08-19
摘要： The present invention is directed to a self-sufficient process for the production of biomass hydrolysate with reduced salt content as well as the de-salted hydrolysate produced after the inventive process and the use of the de-salted hydrolysate as a fermentation medium.
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公开(公告)号：US20190077885A1
公开(公告)日：2019-03-14
申请号：US16081373
申请日：2016-03-15
申请人： DAICEL CORPORATION
摘要： Disclosed herein is cellulose acetate that has excellent heat stability under wet conditions and is capable of reducing the occurrence of end-breakage in a spinning process.Cellulose acetate satisfying the following formula (1): [Mg/H2SO4]>0,[Ca/H2SO4]>0, and 2.70−[Mg/H2SO4])/1.62≤[Ca/H2SO4]≤(37.7−[Mg/H2SO4])/10.3 (1), where the formula (1) represents a relationship between a chemical equivalent ratio of calcium content to residual sulfuric acid content [Ca/H2SO4] and a chemical equivalent ratio of magnesium content to residual sulfuric acid content [Mg/H2SO4].
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公开(公告)号：US20180016607A1
公开(公告)日：2018-01-18
申请号：US15547833
申请日：2016-01-20
发明人： Karin HÄGGLUND
CPC分类号： C12P19/02 , C12P19/14 , C12P2201/00 , C12Y302/01004 , C13K1/02 , D21C1/02 , D21C1/04 , Y02E50/16
摘要： The present invention relates to a method for pretreating a softwood starting material comprising the following steps: a) pretreating the softwood starting material in a pretreatment process to form a slurry; b) measuring the concentration of glucose and the concentration of mannose in the slurry formed in step a); c) calculating a ratio glucose:mannose from the concentrations measured in step b) d) comparing the ratio calculated in step c) to a reference value and if the ratio calculated in step c) differs from the reference value, controlling at least one process parameter of the pretreatment process in response to the difference.
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公开(公告)号：US09863090B2
公开(公告)日：2018-01-09
申请号：US14770286
申请日：2014-02-26
申请人： Bio-Sep Limited
发明人： Malcolm Gilbert Gates , Anthony Robin McGarel-Groves , Nigel Donald Anderson , Kenneth John Coryton Day , Patrick Leahy , Geoffrey Nicholas Drage
IPC分类号： D21C11/00 , D21C1/00 , D21C3/00 , D21C5/00 , C08H7/00 , C08H8/00 , C07G1/00 , C08B37/00 , D21C1/04 , D21C1/10
CPC分类号： D21C11/0007 , C07G1/00 , C08B37/006 , C08H6/00 , C08H8/00 , D21C1/00 , D21C1/04 , D21C1/10 , D21C3/00 , D21C5/00 , Y02P70/24
摘要： There is described a method of fractionating a biomass material comprising: (i) blending the biomass material with an acid catalyst to form a slurry; (ii) mixing the slurry with an organosolv reagent optionally under an inert atmosphere to form a pre-treatment mix; (iii) subjecting the pre-treatment mix to sonication; (iv) optionally heating the product of step (iii) in an autoclave under pressure; (v) separating the solid and liquid components of the fractionation mix; (vi) optionally washing the solid; (vii) optionally drying the solid component; (viii) separating the liquid component into organic and aqueous components; and (ix) isolating lignin from the organic component and/or isolating hemi-cellulose from the aqueous component.
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公开(公告)号：US20170362618A1
公开(公告)日：2017-12-21
申请号：US15534840
申请日：2015-12-11
发明人： Quang A. Nguyen
摘要： The present disclosure generally relates to a methods and systems for conversion of chemically pretreated lignocellulosic biomass to monosaccharides by enzymatic hydrolysis at high total solids concentration to provide for increased throughput and reduced enzyme usage in commercial scale processes.
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公开(公告)号：US20160298292A1
公开(公告)日：2016-10-13
申请号：US15190386
申请日：2016-06-23
申请人： SHELL OIL COMPANY
CPC分类号： D21C1/04 , C10G3/42 , C10G3/44 , C10G3/50 , C10G2300/1011 , D21C1/02 , D21C1/06 , D21C3/00 , D21C3/02 , D21C3/04 , Y02P30/20
摘要： A selective removal of metal and its anion species that are detrimental to subsequent hydrothermal hydrocatalytic conversion from the biomass feed prior to carrying out catalytic hydrogenation/hydrogenolysis/hydrodeoxygenation of the biomass in a manner that does not reduce the effectiveness of the hydrothermal hydrocatalytic treatment while minimizing the amount of water used in the process is provided.
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