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1. 发明授权

US11186948B2 Method and a system for production of high molecular weight lignin 有权
公开(公告)号：US11186948B2
公开(公告)日：2021-11-30
申请号：US16302725
申请日：2016-05-27
申请人： FIBRATECH PTE. LTD
发明人： Matti Kurki
IPC分类号： D21C3/02 , D21C1/00 , D21C7/00 , D21C7/14 , D21C3/24 , D21C7/12 , D21C11/00 , D21C3/22 , C08L97/00 , D01F9/17
摘要： A cooking method and a digester system wherein partly digested cellulosic fiber source is compressed during cooking to provide high molecular weight lignin and pulp.

2. 发明申请

US20210309449A1 OUTLET SYSTEM FOR TRANSPORTING COMMINUTED LIGNOCELLULOSIC MATERIAL FROM A VESSEL AND VESSEL COMPRISING SUCH AN OUTLET SYSTEM 有权
公开(公告)号：US20210309449A1
公开(公告)日：2021-10-07
申请号：US17287185
申请日：2019-10-28
申请人： VALMET AB
发明人： Roger JANSSON , Jonas SAETHERÅSEN , Jerk SÖDERMAN , Magnus WILHELMSSON
IPC分类号： B65D88/28 , D21C3/24 , D21C3/26 , D21C7/06
摘要： The present invention relates to an outlet system for transporting comminuted lignocellulosic material from a vessel, said bottom portion (1) having an upper circumference (15) that is essentially circular and a lower circumference (16) comprising at least two essentially straight portions (16a, 16c) opposite each other. The invention also relates to a vessel having such an outlet system.

3. 发明申请

US20190218712A1 METHOD FOR GENERATION OF CLEAN STEAM IN A CONTINOUS DIGESTER SYSTEM 审中-公开
公开(公告)号：US20190218712A1
公开(公告)日：2019-07-18
申请号：US16301602
申请日：2017-05-16
申请人： VALMET AB
发明人： Krister OLSSON , Jari MIETTINEN , Keyla MIETTINEN , Kjell LJUNGKVIST
IPC分类号： D21C1/02 , D21C11/06 , D21C3/24 , D21C7/10
摘要： The invention relates to an improved method for generating clean steam in a digester plant of a chemical pulp mill. By feeding a steam-to-steam converter (SSC) with venting steam from a black liquor flash tank (FT) as well as venting steam from chip steaming (SV) could the volume of clean steam produced be increased by over 40-50%, and to such an extent that the volume of clean steam covers the needs for preheating of chips in the digester system also in severe operational conditions. The total consumption of clean steam from the steam net of the mill may be reduced and used for other purposes such as electricity production, which meets the requirements for converting the pulp mill to an environmental friendly pulp mill.

4. 发明授权

US10151064B2 Softwood kraft fiber having an improved α-cellulose content and its use in the production of chemical cellulose products 有权
公开(公告)号：US10151064B2
公开(公告)日：2018-12-11
申请号：US14766316
申请日：2014-02-06
申请人： GP CELLULOSE GMBH
发明人： Arthur J. Nonni , Charles E. Courchene , Philip Reed Campbell , Steven Chad Dowdle , Joel Mark Engle , Blair Roderick Carter , Christopher M. Slone
IPC分类号： D21C9/16 , D21C9/147 , D21C9/10 , D21C3/02 , D21C3/24 , D21C9/14
摘要： A bleached softwood kraft pulp fiber with high α-cellulose content and a low CED viscosity is provided, A surfactant treated fiber useful in the production of chemical derivatives is also described. Methods for making the kraft pulp fiber and products made from it are also described.

5. 发明授权

US09803317B2 Method of digesting lignocellulosic material 有权
公开(公告)号：US09803317B2
公开(公告)日：2017-10-31
申请号：US14377610
申请日：2013-02-08
申请人： BASF SE
发明人： David Durocher , Thomas C. Friel , Kenneth L. Zack
IPC分类号： D21C5/00 , C08H8/00 , D21C3/02 , D21C3/22 , D21C3/24
CPC分类号： D21C5/00 , C08H8/00 , D21C3/02 , D21C3/222 , D21C3/24
摘要： A method of digesting lignocellulosic material includes the steps of providing the lignocellulosic material and a caustic composition having a pH of at least about 10. The caustic composition includes water, an alkaline- or alkaline earth-metal hydroxide, and up to about 1 percent by weight based on a total weight of the composition of a branched digestion additive. The branched digestion additive has the structure: wherein A is at least one alkyleneoxy group and each alkyleneoxy group has from 2 to 4 carbon atoms, n is 0 or 1, B is a branched aliphatic hydrocarbon group having from 8 to 15 carbon atoms, X is H or B-0-(A)m, and each m is independently an average value from 3 to 30, and wherein the caustic composition has a Draves Wetting Time of less than 100 seconds as determined using ASTM D2281.

6. 发明申请

US20170175328A1 METHOD AND APPARATUS FOR PUMPING SAWDUST FEED IN A SAWDUST PULPING SYSTEM 审中-公开
公开(公告)号：US20170175328A1
公开(公告)日：2017-06-22
申请号：US15387597
申请日：2016-12-21
申请人： Andritz Inc.
发明人： Tyson Bradford HUNT
IPC分类号： D21C7/06 , D21C3/24 , D21C3/02 , D21C7/00
CPC分类号： D21C7/06 , D21C3/02 , D21C3/24 , D21C7/00
摘要： A method of producing chemical cellulose pulp from sawdust utilizing a static down-flow retention vessel comprising the steps of continuously pressurizing a flow of sawdust using a progressive cavity pump to produce a pressurized sawdust feed for a treatment vessel, passing the pressurized sawdust feed at super-atmospheric pressure downwardly in the treatment vessel, adding treatment white black liquor to the treatment vessel, and treating the pressurized sawdust feed in the treatment vessel with treatment white black liquor to form a treated sawdust, and discharging treated sawdust from the treatment vessel.

7. 发明申请

US20160002849A1 Softwood Kraft Fiber Having an Improved A-Cellulose Content and its Use in the Production of Chemical Cellulose Products 审中-公开
标题翻译：具有改善的α-纤维素含量的软木牛皮纸纤维及其在生产化学纤维素产品中的应用
公开(公告)号：US20160002849A1
公开(公告)日：2016-01-07
申请号：US14766316
申请日：2014-02-06
申请人： GP CELLULOSE GMBH
发明人： Arthur J. NONNI , Charles E. COURCHENE , Philip Reed CAMPBELL , Steven Chad DOWDLE , Joel Mark ENGLE , Blair Roderick CARTER , Christopher M. SLONE
IPC分类号： D21C3/24 , D21C9/10 , D21C9/16
CPC分类号： D21C3/24 , D21C3/02 , D21C9/1026 , D21C9/1036 , D21C9/144 , D21C9/147 , D21C9/163
摘要： A bleached softwood kraft pulp fiber with high α-cellulose content and a low CED viscosity is provided, A surfactant treated fiber useful in the production of chemical derivatives is also described. Methods for making the kraft pulp fiber and products made from it are also described.
摘要翻译：还提供了具有高α-纤维素含量和低粘度粘度的漂白的软木牛皮纸浆纤维。还描述了可用于生产化学衍生物的表面活性剂处理的纤维。还描述了制备牛皮纸浆纤维的方法和由其制成的产品。

8. 发明授权

US09194080B2 Two vessel reactor system and method for hydrolysis and digestion of wood chips with chemical enhanced wash method 有权
标题翻译：采用化学增强洗涤法的双层釜反应器系统及木屑水解消解方法
公开(公告)号：US09194080B2
公开(公告)日：2015-11-24
申请号：US14278579
申请日：2014-05-15
申请人： Andritz Inc.
发明人： Namhee Shin , Bertil Stromberg , Ventzislav H. Kirov , William J. Cann
IPC分类号： D21C7/00 , D21C7/06 , D21C3/26 , D21C1/02 , D21C3/24 , D21C3/02 , D21C1/04 , D21C7/14
CPC分类号： D21C3/26 , D21C1/02 , D21C1/04 , D21C3/02 , D21C3/24 , D21C7/00 , D21C7/06 , D21C7/14
摘要： A reactor vessel system including: a first reactor vessel having a hydrolysate and liquid extraction screen, a first region above the extraction screen that is maintained at conditions promoting a hydrolysis reaction in the cellulosic material, a second region below the extraction screen in which the hydrolysis is substantially suppressed and a wash liquid inlet below the extraction screen providing wash liquid at a temperature below a hydrolysis temperature; a transport pipe having an inlet coupled to the first reactor vessel and an outlet coupled to a second reactor vessel, and the second reactor vessel includes a liquid discharge that extracts a portion of liquid from the second reactor vessel and directs the portion of liquid to the first reactor vessel or to the transport pipe.
摘要翻译：一种反应器容器系统，包括：具有水解液和液体提取筛的第一反应器容器，在提取筛网上方的第一区域，其保持在促进纤维素材料中的水解反应的条件下，提取筛网下面的第二区域，其中水解基本上被抑制，并且在提取筛下方的洗涤液入口在低于水解温度的温度下提供洗涤液; 输送管，其具有连接到第一反应器容器的入口和连接到第二反应器容器的出口，并且第二反应器容器包括液体排出物，其从第二反应器容器中提取一部分液体并将液体部分引导到第一反应堆容器或运输管道。

9. 发明授权

US09145642B2 Cooking process of lignocellulose material 有权
标题翻译：木质纤维素材料的烹饪过程
公开(公告)号：US09145642B2
公开(公告)日：2015-09-29
申请号：US13322729
申请日：2010-05-18
申请人： Kazuhiro Kurosu , Keigo Watanabe , Takamichi Kishi
发明人： Kazuhiro Kurosu , Keigo Watanabe , Takamichi Kishi
IPC分类号： D21C3/02 , D21C3/24
CPC分类号： D21C3/022 , D21C3/02 , D21C3/24
摘要： A continuous cooking process making use of a digester, which includes therein, from a top toward a bottom of the digester, a top zone, an upper cooking zone, a lower cooking zone and a cooking/washing zone and also includes strainers provided at the bottom of the respective zones and wherein a cooking black liquor extracted from at least one of the strainers is discharged to outside a digestion system, a process for cooking a lignocellulose characterized by feeding, upstream of the top of the digester, a first cooking liquor containing an alkaline cooking liquor having a specified composition, feeding a second cooking liquor of an alkaline cooking liquor made mainly of sodium hydroxide to the upper cooking zone, and feeding a third cooking liquor of an alkaline cooking liquor similar to the second cooking liquor to the cooking/washing zone.
摘要翻译：使用包括其中的消化器从蒸煮器的顶部到底部的蒸煮器的连续烹饪过程，顶部区域，上部烹饪区域，下部烹饪区域和烹饪/洗涤区域，并且还包括设置在蒸煮器底部，并且其中从至少一个过滤器提取的烹饪黑液排出到消化系统的外部，用于烹饪木质纤维素的方法，其特征在于，在蒸煮器顶部的上游供给含有将具有特定组成的碱性蒸煮液，将主要由氢氧化钠制成的碱性蒸煮液的第二蒸煮液供给到上部烹饪区域，并将与第二烹饪液类似的碱性蒸煮液的第三蒸煮液送入烹饪 /洗涤区。

10. 发明授权

US08986501B2 Methods for removing hemicellulose 有权
公开(公告)号：US08986501B2
公开(公告)日：2015-03-24
申请号：US13827881
申请日：2013-03-14
申请人： Celanese International Corporation
发明人： Rongfu Li , Jay Mehta , Xiaoyan Tu , Prabuddha Bansal , Michael Combs , Denis Fallon , Lawton E Kizer
IPC分类号： D21C3/24 , D21C3/04 , D21C3/20 , D21C5/00 , C08B37/00 , C08H8/00 , D21C11/00
CPC分类号： D21C3/003 , C08B1/00 , C08B37/0057 , C08B37/14 , C08H8/00 , D21C3/04 , D21C3/20 , D21C5/00 , D21C11/0007 , Y02P20/542
摘要： A method for treating a cellulosic material comprising extracting the cellulosic material with an extractant to selectively extract hemicellulose therein and separating the extracted hemicellulose to form a cellulosic product comprising less hemicellulose than the cellulosic material. The extractant comprises an amine oxide and a non-solvent. The cellulosic product retains the cellulosic fiber morphology.

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