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公开(公告)号：US12098504B2
公开(公告)日：2024-09-24
申请号：US16346455
申请日：2017-11-02
发明人： Robert C. Casad, Jr. , Ib Johannsen
摘要： Hydrothermal pretreatment of mechanically compressed straw in unagitated reactors provides a simple and inexpensive solution to poor C5 monomer yields with autohydrolysis processes. Unlike raw straw, compressed straw pellets or briquettes can be pretreated on commercial scale using unagitated batch reactors or simplified unagitated continuous systems. The chemistry of hydrothermal pretreatment is thereby altered such that loss of C5 sugars to unwanted byproduct reactions is reduced. With compressed straw, water content can be introduced within the reactor while it is pressurized, which reduces energy costs and capital expense. Provided are methods of processing straw feedstocks using semi-continuous or continuous systems and a pretreatment reactor adapted to processes compressed straw with high throughput through a small reactor volume in which water content is added within the reactor under pressure.
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公开(公告)号：US20220364305A1
公开(公告)日：2022-11-17
申请号：US17826700
申请日：2022-05-27
发明人： John Claude Husband , Per Svending , David Robert Skuse , Tafadzwa Motsi , Mikko Likitalo , Alan Coles
摘要： A method for preparing an aqueous suspension may include providing a fibrous substrate comprising cellulose having a Canadian Standard freeness equal to or less than 450 cm3, and microfibrillating the fibrous substrate in an aqueous environment by grinding in the presence of a grinding medium consisting essentially of mullite. The grinding may be carried out in the absence of grindable inorganic particulate material. The grinding medium may be present in an amount of at least about 10% by volume of the aqueous environment. The microfibrillated cellulose may have a fibre steepness of from about 20 to about 50.
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公开(公告)号：US11377791B2
公开(公告)日：2022-07-05
申请号：US16117685
申请日：2018-08-30
发明人： John Claude Husband , Per Svending , David Robert Skuse , Tafadzwa Motsi , Mikko Likitalo , Alan Coles
摘要： A method for preparing an aqueous suspension may include providing a fibrous substrate comprising cellulose having a Canadian Standard freeness equal to or less than 450 cm3, and microfibrillating the fibrous substrate in an aqueous environment by grinding in the presence of a grinding medium consisting essentially of mullite. The grinding may be carried out in the absence of grindable inorganic particulate material. The grinding medium may be present in an amount of at least about 10% by volume of the aqueous environment. The microfibrillated cellulose may have a fibre steepness of from about 20 to about 50.
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公开(公告)号：US20150041083A1
公开(公告)日：2015-02-12
申请号：US14367054
申请日：2012-12-04
申请人： KAO CORPORATION
发明人： Hayato Yoshikawa , Yuuji Maruno
CPC分类号： D21H17/25 , C07G1/00 , C08H6/00 , C08H8/00 , C08L97/005 , C12P19/14 , D21B1/303 , D21H17/005 , D21H17/06
摘要： The present invention relates to [1] a process for producing a lignin degradation product, including the following steps (1) to (3), and [2] a lignin degradation product produced by the process as described in the above [1]: Step (1): subjecting a lignocellulose raw material to enzymatic saccharification treatment to obtain a saccharification residue; Step (2): subjecting the saccharification residue obtained in the step (1) to heat treatment in a mixed solvent containing water and an organic solvent having a solubility in 20° C. water of not less than 90 g/L to obtain a heat treatment solution containing the lignin degradation product; and Step (3): subjecting the heat treatment solution obtained in the step (2) to solid-liquid separation to remove insoluble components from the heat treatment solution, thereby obtaining the lignin degradation product. The present invention provides a process for producing a novel lignin degradation product having a low degree of denaturation, a high solubility in solvents and a high versatility with a high yield.
摘要翻译： 本发明涉及[1]一种生产木质素降解产物的方法，包括以下步骤（1）至（3）和[2]通过上述[1]所述方法生产的木质素降解产物： 步骤（1）：使木素纤维素原料进行酶糖化处理，得到糖化残渣; 步骤（2）：将在步骤（1）中获得的糖化残余物在含有20℃水溶解度的水和有机溶剂的混合溶剂中进行加热处理，水不低于90g / L，得到热量 含有木质素降解产物的处理溶液; 和步骤（3）：将步骤（2）中获得的热处理溶液进行固液分离，从热处理溶液中除去不溶成分，得到木质素降解产物。 本发明提供一种生产具有低变性度，在溶剂中的高溶解度和高产率的高通用性的新型木质素降解产物的方法。
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公开(公告)号：US20050194482A1
公开(公告)日：2005-09-08
申请号：US11023850
申请日：2004-12-28
申请人： Danny Cassidy
发明人： Danny Cassidy
IPC分类号： D21B1/08 , B02C1/00 , D21B1/30 , D21B1/32 , D21C1/00 , D21C5/02 , D21C9/00 , D21D1/30 , D21D5/00
CPC分类号： D21D1/008 , D21B1/32 , D21D1/30 , Y02W30/646
摘要： A disperger plate segment, for removing contaminants from recycled, or recovered, paper and packaging materials includes radially concentric rows of teeth. Each row of teeth includes teeth and channels disposed intermediate the teeth. Each of the teeth have an upper, top surface, a radially inner face extending from the channel base surface to the tooth top surface, and a radially outer face extending from the channel base surface to the tooth top surface. The teeth inner and outer faces each have a groove extending from the tooth top surface to a position intermediate the tooth top surface and the channel base surface.
摘要翻译： 用于从再循环或回收的纸和包装材料中除去污染物的分散板段包括径向同心的齿排。 每排牙齿包括设置在牙齿中间的齿和通道。 每个齿具有上表面，从通道基面延伸到齿顶表面的径向内表面，以及从通道基面延伸到齿顶表面的径向外表面。 齿内表面和外表面各自具有从齿顶表面延伸到齿顶表面和通道基底表面之间的位置的凹槽。
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公开(公告)号：US06902314B2
公开(公告)日：2005-06-07
申请号：US10411295
申请日：2003-04-11
申请人： Paul Olof Meinander
发明人： Paul Olof Meinander
摘要： Apparatus and method are provided for treating a fluid mass or stock, particularly couch stock in paper making. Stock material is fed into a vessel having a mixing arrangement comprising rotatably arranged processing means. At lest two processing means are caused to rotate mutually adjacent in opposite direction and essentially horizontally. The stock at the upper surface of the means is conveyed towards a wall portion of the vessel, whereby spirals arranged in an inclined manner at a core of the processing means bring stock into channels defined by the core, by the spirals, and by the wall portion of the vessel, and further towards a constriction formed by the respective spiral elements running in an intermeshed manner, while a part of the stock is forced in a direction away from a discharge of the vessel.
摘要翻译： 提供了设备和方法来处理造纸中的流体质量或原料，特别是沙发坯料。 将原料输送到具有可旋转布置的处理装置的混合装置的容器中。 至少使两个处理装置在相反方向和基本上水平地相互相对地旋转。 装置的上表面处的原料被输送到容器的壁部分，由此在处理装置的芯部处以倾斜的方式设置螺旋，从而将原料放入由芯部，螺旋体和墙壁限定的通道中 并且进一步朝向由以相互啮合的方式运行的各个螺旋元件形成的收缩部，同时一部分原料被迫沿远离容器的排出的方向被迫。
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公开(公告)号：US6145766A
公开(公告)日：2000-11-14
申请号：US22776
申请日：1998-02-12
申请人： Peter Mraz , Heinrich Munster
发明人： Peter Mraz , Heinrich Munster
摘要： The invention relates to a device for dewatering and defibrating ligno-cellulose material using a screw. It is primarily characterized by a defibrating element (9) directly adjoining the body (2') of a first screw.
摘要翻译： 本发明涉及使用螺杆对木质纤维素材料进行脱水和解纤维的装置。 其主要特征在于直接邻接第一螺钉的主体（2'）的解纤元件（9）。
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公开(公告)号：US5803270A
公开(公告)日：1998-09-08
申请号：US550750
申请日：1995-10-31
申请人： Pierre Brodeur
发明人： Pierre Brodeur
CPC分类号： B01D21/283 , B01J19/10 , B03B5/00 , D21B1/30 , D21D5/00
摘要： Methods and apparatus for acoustic fiber fractionation using a plane ultrasonic wave field interacting with water suspended fibers circulating in a channel flow using acoustic radiation forces to separate fibers into two or more fractions based on fiber radius, with applications of the separation concept in the pulp and paper industry. The continuous process relies on the use of a wall-mounted, rectangular cross-section piezoelectric ceramic transducer to selectively deflect flowing fibers as they penetrate the ultrasonic field. The described embodiment uses a transducer frequency of approximately 150 kHz. Depending upon the amount of dissolved gas in water, separation is obtained using a standing or a traveling wave field.
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公开(公告)号：US5730371A
公开(公告)日：1998-03-24
申请号：US632759
申请日：1996-04-16
CPC分类号： A01K1/0155 , D21B1/30
摘要： A device and a process for delumping pasty masses in waste materials from paper manufacture. The delumping means employs at least one rotating cylindrical drum having a plurality of flexible fingers mounted on the drum. Pasty masses are supplied to the delumper preferably by a chute mounted to the top of the delumper, and are struck by the flexible fingers of the rotating drum. Annular recesses are formed at the base of the flexible fingers which mates with a plurality of bores in the drum housings. Preferably, the fingers are rubber.
摘要翻译： 一种用于从纸张制造中将废弃物中的糊状物料粉碎的装置和方法。 漂白装置采用至少一个旋转的圆筒形滚筒，其具有安装在滚筒上的多个柔性指状物。 优选地，通过安装在脱水器顶部的斜槽将优质块料提供给脱水器，并且被旋转滚筒的柔性指状物撞击。 在柔性指状物的基部形成环形凹部，其与鼓壳体中的多个孔相配合。 手指最好是橡胶。
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公开(公告)号：US5407268A
公开(公告)日：1995-04-18
申请号：US293747
申请日：1994-08-22
申请人： Hans Henrich
发明人： Hans Henrich
CPC分类号： B01F13/1013 , D21B1/342
摘要： A substance kneader, specifically for cellulose fiber suspensions, with kneading elements arranged at the periphery of a rotor encased in a housing. Two drum type rotor parts and a rotor part disposed in between feature a feed worm conveyor for each rotor part. In the area between facing ends of the worm conveyors, and symmetric to this area, are the inlet openings of the housing. On the ends away from each other, of the rotor parts, are the outlet openings of the housing. The outlet openings are each coordinated with delivery worm conveyors having variable-RPM drive for control of throughput and/or dwell time of the substance to be kneaded.
摘要翻译： 一种特别用于纤维素纤维悬浮液的物质捏合机，其中捏合元件布置在壳体周围的转子周围。 两个滚筒式转子部件和设置在其间的转子部件具有用于每个转子部件的进给蜗杆传送器。 在蜗杆输送机的相对端之间并与该区域对称的区域是壳体的入口开口。 在转子部件彼此远离的端部，是壳体的出口。 出口开口各自与具有可变RPM驱动器的输送蜗杆输送机配合，用于控制待混炼物质的通过量和/或停留时间。
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