-
公开(公告)号：USRE39208E1
公开(公告)日：2006-08-01
申请号：US10829477
申请日：2004-04-22
摘要： A comminuted cellulosic fibrous material treatment vessel assembly includes a substantially vertical vessel having a top, bottom, and outlet, and through which the material flows in a flow direction. The vessel preferably has a substantially cylindrical wall with at least one diameter-changing transition between the inlet and the outlet. A screen assembly is preferably provided at or just past the transition. The screen assembly comprises one or more annular screen surfaces diverging in the flow direction of the material, the angle of divergence being between about 0.5-10° to the vertical, and preferably substantially continuous. Providing such a screen assembly reduces the radial compression of material thereon, and increases the volume and rate of liquid that can flow through the material and be removed through the screen surface compared to a non-diverging screen surface (that is a right-cylindrical surface). The screen surface has openings of substantially uniform size, and preferably with a substantially uniform percentage of open area, in the flow path.
-
公开(公告)号：US6129816A
公开(公告)日：2000-10-10
申请号：US953880
申请日：1997-10-24
摘要： A comminuted cellulosic fibrous material treatment vessel assembly includes a substantially vertical vessel having a top, bottom, and outlet, and through which the material flows in a flow direction. The vessel preferably has a substantially cylindrical wall with at least one diameter-changing transition between the inlet and the outlet. A screen assembly is preferably provided at or just past the transition. The screen assembly comprises one or more annular screen surfaces diverging in the flow direction of the material, the angle of divergence being between about 0.5-10.degree. to the vertical, and preferably substantially continuous. Providing such a screen assembly reduces the radial compression of material thereon, and increases the volume and rate of liquid that can flow through the material and be removed through the screen surface compared to a non-diverging screen surface (that is a right-cylindrical surface). The screen surface has openings of substantially uniform size, and preferably with a substantially uniform percentage of open area, in the flow path.
摘要翻译： 粉碎的纤维素纤维材料处理容器组件包括具有顶部，底部和出口的基本垂直的容器，材料通过该容器在流动方向上流动。 容器优选地具有基本上圆柱形的壁，在入口和出口之间具有至少一个直径变化的过渡。 屏幕组件优选地设置在过渡处或刚刚过渡处。 屏幕组件包括在材料的流动方向上发散的一个或多个环形屏幕表面，发散角在垂直之间约0.5-10°，优选地基本上连续。 提供这种屏幕组件减少了其上的材料的径向压缩，并且与不发散的屏幕表面（即，右圆柱表面）相比，增加了可流过材料并且通过屏幕表面移除的液体的体积和速率 ）。 屏幕表面具有在流动路径中具有基本上均匀的尺寸，并且优选地具有基本均匀的开放面积百分比的开口。
-
公开(公告)号：US06375796B1
公开(公告)日：2002-04-23
申请号：US09640666
申请日：2000-08-18
IPC分类号： D21C700
摘要： A comminuted cellulosic fibrous material treatment vessel assembly includes a substantially vertical vessel having a top, bottom, and outlet, and through which the material flows in a flow direction. The vessel preferably has a substantially cylindrical wall with at least one diameter-changing transition between the inlet and the outlet. A screen assembly is preferably provided at or just past the transition. The screen assembly comprises one or more annular screen surfaces diverging in the flow direction of the material, the angle of divergence being between about 0.5-10° to the vertical, and preferably substantially continuous. Providing such a screen assembly reduces the radial compression of material thereon, and increases the volume and rate of liquid that can flow through the material and be removed through the screen surface compared to a non-diverging screen surface (that is a right-cylindrical surface). The screen surface has openings of substantially uniform size, and preferably with a substantially uniform percentage of open area, in the flow path.
摘要翻译： 粉碎的纤维素纤维材料处理容器组件包括具有顶部，底部和出口的基本垂直的容器，材料通过该容器在流动方向上流动。 容器优选地具有基本上圆柱形的壁，在入口和出口之间具有至少一个直径变化的过渡。 屏幕组件优选地设置在过渡处或刚刚过渡处。 屏幕组件包括在材料的流动方向上发散的一个或多个环形屏幕表面，发散角在垂直于约0.5-10°之间，优选地基本连续。 提供这种屏幕组件减少了其上的材料的径向压缩，并且与不发散的屏幕表面（即，右圆柱表面）相比，增加了可流过材料并且通过屏幕表面移除的液体的体积和速率 ）。 屏幕表面具有在流动路径中具有基本上均匀的尺寸，并且优选地具有基本均匀的开放面积百分比的开口。
-
公开(公告)号：US5985096A
公开(公告)日：1999-11-16
申请号：US936047
申请日：1997-09-23
申请人： Bruno S. Marcoccia , J. Robert Prough , Jerry R. Johanson , C. Bertil Stromberg , Joseph R. Phillips
发明人： Bruno S. Marcoccia , J. Robert Prough , Jerry R. Johanson , C. Bertil Stromberg , Joseph R. Phillips
IPC分类号： D21C7/00
CPC分类号： D21C7/00
摘要： In a vertical digester for producing chemical pulp, or other vessel for treating a slurry of comminuted fibrous cellulosic material, the cost of manufacturing the shell is significantly reduced by eliminating the external step increases in the digester shell. The digester shell has a substantially constant internal diameter from just below the inlet to just above the outlet, screen assemblies being provided by an internal transition (e.g. conical) having an angle of convergence of less than 40.degree. (e.g. about 10-25.degree.) above each screen assembly so that the slurry flows through the transition without bridging or hang-up, and a step increase, or other increase, in diameter back to the first diameter after the screen assembly.
摘要翻译： 在用于生产化学纸浆的立式蒸煮器或用于处理粉碎的纤维状纤维素材料的浆料的其它容器中，通过消除蒸煮器壳体的外部步骤增加，制造壳体的成本显着降低。 蒸煮器壳体具有从入口正下方到出口正上方的基本上恒定的内径，筛网组件由倾斜角小于40°（例如约10-25°）的内部过渡（例如圆锥形）提供， 在每个筛网组件之上，使得浆料流过过渡而不会桥接或挂起，并且在筛网组装之后，直径逐渐增加或者增加到第一直径。
-
公开(公告)号：US5567279A
公开(公告)日：1996-10-22
申请号：US801651
申请日：1991-12-02
申请人： Joseph R. Phillips , John D. Weston , Victor L. Bilodeau , Ronald G. Bain , Mark D. Barrett , Brian F. Greenwood , John Pietrangelo
发明人： Joseph R. Phillips , John D. Weston , Victor L. Bilodeau , Ronald G. Bain , Mark D. Barrett , Brian F. Greenwood , John Pietrangelo
摘要： Located within the annular screen of the pressure diffuser is a tubular baffle hung from adjacent the top of the vessel. The baffle has two headers disposed on its inner surface, with openings in the tube providing communication between the exterior of the tube and the headers. A conduit extends from each header to an arm at the top of the vessel, to allow extracted liquid to be discharged. Another extraction conduit is provided at the bottom of the vessel, in communication with the screen interior and the tubular baffle interior. Treatment liquid, such as wash liquid, may be introduced at two, three, or more positions along the vessel with the liquid extracted from the first and second headers being introduceable at different positions along the vessel. A flexible, elastomeric material, sealing element with integral annular skirt may extend from the bottom end of the tubular baffle and engage the screen to provide a seal minimizing mixing between stages.
摘要翻译： 位于压力扩散器的环形屏幕内的是与容器顶部相邻的管状挡板。 挡板具有设置在其内表面上的两个集管，管中的开口提供管的外部和集管之间的连通。 导管从容器的顶部从每个头部延伸到臂，以允许抽出的液体排出。 在容器的底部提供另一个提取管道，与屏幕内部和管状挡板内部连通。 诸如洗涤液体的处理液体可以沿着容器引入两个，三个或更多个位置，从第一和第二集管提取的液体可以沿着容器在不同位置被引入。 具有整体环形裙部的柔性弹性体材料密封元件可以从管状挡板的底端延伸并接合屏幕以提供最小化阶段之间的混合的密封。
-
6.发明授权Chip bin with steaming control and a gas vent containing a vacuum and pressure relief device 失效具有蒸汽控制的切屑仓和包含真空和压力释放装置的排气口
公开(公告)号：US5547546A
公开(公告)日：1996-08-20
申请号：US317801
申请日：1994-10-04
摘要： A chip bin for wood chips in a continuous digester system includes internal steaming that is controlled in response to both the interior temperature across the level of chips in the bin, and the level of chips in the bin, so as to substantially prevent cool, non-condensible gas-laden chips from accumulating at the top of the chip column in the bin, and to substantially prevent steam blow-through. The temperature probe used in the chip bin has a temperature sensing portion with a length of about ten to twenty feet instead of the conventional five foot length, and extends across the level of the chips to a position about five feet below the level of chips. Control of steam added to the bin is provided utilizing a controller which controls the position of one or more valves in one or more steam conduits, each valve having multiple open positions and a closed position. A vacuum and pressure relief device is disposed in a non-condensible gases vent from the bin which minimizes the potential for gross gas flow variations across it. The relief device includes a solid interior peripheral portion of the vent, a gate mounted for pivotal movement by a pivot shaft, and a casing which is a cylindrical sector (having a sector angle of about 30.degree.-60.degree.) in which the gate pivots. The casing is mounted in the solid interior peripheral portion and a brush seal is provided between the gate and the cylindrical sector casing.
摘要翻译： 用于连续蒸煮器系统中的木片的碎片箱包括内部蒸汽，其响应于箱中的切屑水平的内部温度以及料仓中的切屑水平而被控制，以便基本上防止冷却， 可靠的气体填充芯片积聚在料斗中的芯片柱的顶部，并且基本上防止蒸汽吹过。 在芯片仓中使用的温度探测器具有温度感测部分，其长度大约为十到二十英尺，而不是传统的五英尺长度，并且延伸跨越芯片的水平到比芯片级别大约五英尺的位置。 通过控制一个或多个蒸汽导管中的一个或多个阀的位置，每个阀具有多个打开位置和关闭位置的控制器来提供加到箱中的蒸汽的控制。 真空和压力释放装置设置在不可冷凝的气体排放口中，从而最小化跨越其的总气体流量变化的可能性。 排气装置包括通气口的实心内周部分，安装用于通过枢轴枢转运动的门和作为门枢转的圆柱形部分（具有约30°-60°的扇形角）的壳体 。 壳体安装在实心内周部分中，并且在门和圆柱形扇形外壳之间设置有刷密封件。
-
7.发明授权Bleaching cellulose pulp having cleanliness which varies significantly over time using at least two different bleaching stages and bleaching chemicals 失效使用至少两种不同的漂白阶段和漂白化学品，漂白纤维素纸浆具有随时间变化的清洁度
公开(公告)号：US6153300A
公开(公告)日：2000-11-28
申请号：US229086
申请日：1994-04-18
CPC分类号： D21C9/1057 , D21C5/02 , D21C9/1026 , Y02W30/648 , Y10T428/2913 , Y10T428/2964 , Y10T428/2965 , Y10T428/2967 , Y10T428/2975 , Y10T428/2978
摘要： Recycled paper pulp having at least two different types of paper which consume widely different amounts of bleaching chemical, or mixed hardwood and soft-wood pulps, are treated in a manner that enhances distribution and redistribution of bleaching chemical to enhance uniformity of the bleaching treatment. The pulp is intensely mixed to provide a homogenous mixture of fibrous material and bleaching chemical, and then is continuously or intermittently subjected to mechanical action (such as in low intensity mixers, or by agitating pulp in a retention tank) of sufficient intensity and duration so as to enhance distribution and redistribution of a bleaching chemical. Also, recycled pulp will have cleanliness which varies significantly over time, and this is accommodated by sensing at least one of the brightness, color, or lignin content (e.g. all three) of the pulp prior to treatment in a first bleaching stage, controlling the quantity of first bleaching chemical added to the first stage in response to at least one of the brightness, color, or lignin content sensing to achieve a target brightness increase for the first stage, and then repeating the sensing and quantity control steps for a second and subsequent stages. Alternatively all sensing can be done initially. Within a stage, a valve may be controlled to subject the pulp to a second treatment in that stage, or to pass it out of the stage to the next stage, depending upon cleanliness.
摘要翻译： 使用具有消耗大量不同量的漂白化学品或混合的硬木和软木纸浆的至少两种不同类型的纸的回收纸浆以增强漂白化学品的分配和再分配以增强漂白处理的均匀性的方式进行处理。 将纸浆强烈混合以提供纤维材料和漂白化学品的均匀混合物，然后以足够的强度和持续时间连续或间歇地进行机械作用（例如在低强度混合器中或通过在保留罐中搅拌纸浆），以便 以增强漂白化学品的分配和再分配。 回收纸浆的清洁度也随着时间而显着变化，这通过在第一漂白阶段中检测处理之前的纸浆的亮度，颜色或木质素含量（例如全部三种）中的至少一种来控制数量 响应于亮度，颜色或木质素含量感测中的至少一种，第一漂白化学品添加到第一阶段，以实现第一阶段的目标亮度增加，然后再次对第二阶段和随后的感测和数量控制步骤进行再次测试 阶段 所有感觉都可以在初期完成。 在一个阶段内，根据清洁度，可以控制阀门使纸浆在该阶段进行第二次处理，或将其从阶段转移到下一阶段。
-
公开(公告)号：US5849150A
公开(公告)日：1998-12-15
申请号：US775197
申请日：1996-12-30
申请人： Bruno S. Marcoccia , J. Robert Prough , Richard O. Laakso , Joseph R. Phillips , Rolf C. Ryham , Jan T. Richardsen , R. Fred Chasse
发明人： Bruno S. Marcoccia , J. Robert Prough , Richard O. Laakso , Joseph R. Phillips , Rolf C. Ryham , Jan T. Richardsen , R. Fred Chasse
IPC分类号： C08B1/00 , C08B15/00 , D21C3/02 , D21C3/22 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14 , D21C9/02 , D21C11/00 , D21C11/02 , D21C11/04 , D21G7/00
CPC分类号： D21C3/02 , D21C11/0021 , D21C11/04 , D21C3/22 , D21C3/224 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14 , D21C9/02 , D21G7/00
摘要： Kraft pulp of increased strength and bleachability may be produced with decreased consumption of effective alkali, and at a lower H factor, by keeping the dissolved organic material (DOM) concentration low substantially through the entire kraft cook, including by extracting high DOM liquid from at least one part of a continuous digester and replacing it with much lower level DOM liquid. Existing pulp mills having two-vessel hydraulic, one-vessel hydraulic, or other systems may be retrofit to provide for extractions and additions of low DOM dilution liquor (including substantially DOM-free white liquor). Also, commercial size batch digesters (8 tons per day of pulp or more) can be operated with low DOM liquor to produce increased strength pulp. Using dilution with low DOM liquor also results in reduced H factor and effective alkali consumption, and increased bleachability.
摘要翻译： 通过将溶解的有机物质（DOM）浓度基本上保持在整个硫酸盐蒸煮中，包括通过从中提取高DOM液体，可以降低有效碱的消耗，并且在较低的H因子下生产具有增加的强度和漂白性的牛皮纸浆 连续消化器的至少一部分，并用更低级别的DOM液体代替。 可以改造具有双容器液压，单容器液压或其它系统的现有纸浆厂，以提供低DOM稀释液（包括基本上不含DOM的白液）的提取和添加。 此外，商业尺寸的批量蒸煮器（每天8吨纸浆或更多）可以用低DOM液体操作以产生增强的纸浆。 使用低DOM酒稀释还可以降低H因子和有效的碱消耗，并增加漂白性。
-
公开(公告)号：US5547012A
公开(公告)日：1996-08-20
申请号：US127548
申请日：1993-09-28
申请人： Bruno S. Marcoccia , J. Robert Prough , Richard O. Laakso , Joseph R. Phillips , Rolf C. Ryham , Jan T. Richardsen , R. Fred Chasse
发明人： Bruno S. Marcoccia , J. Robert Prough , Richard O. Laakso , Joseph R. Phillips , Rolf C. Ryham , Jan T. Richardsen , R. Fred Chasse
IPC分类号： C08B1/00 , C08B15/00 , D21C3/02 , D21C3/22 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14 , D21C9/02 , D21C11/00 , D21C11/02 , D21C11/04 , D21G7/00
CPC分类号： D21C3/02 , D21C11/0021 , D21C11/04 , D21C3/22 , D21C3/224 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14 , D21C9/02 , D21G7/00
摘要： Kraft pulp of increased strength and bleachability may be produced with decreased consumption of effective alkali, and at a lower H factor, by keeping the dissolved organic material (DOM) concentration low substantially through the entire kraft cook, including by extracting high DOM liquid from at least one part of a continuous digester and replacing it with much lower level DOM liquid. Existing pulp mills having two-vessel hydraulic, one-vessel hydraulic, or other systems may be retrofit to provide for extractions and additions of low DOM dilution liquor (including substantially DOM-free white liquor). Also, commercial size batch digesters (8 tons per day of pulp or more) can be operated with low DOM liquor to produce increased strength pulp. Using dilution with low DOM liquor also results in reduced H factor and effective alkali consumption, and increased bleachability.
-
公开(公告)号：US5328564A
公开(公告)日：1994-07-12
申请号：US836585
申请日：1992-02-18
摘要： Kraft pulp is bleached to a brightness of about 90 CPPA or greater, without the use of chlorinated organic compounds that has commercially acceptable strength properties. During production of the kraft pulp it is subjected to extended delignification, by adding kraft white liquor to a first recirculation loop in the digester, and/or a second, wash, recirculation loop in the digester; or by conventional pulping followed by two oxygen stages, with washing between the stages. The extended delignification pulp is then subjected to ozone bleaching, with an ozone dosage of less than 1.0% (preferably less than about 0.5%). The ozone bleaching sequence may be a (ZE)P(ZE)P sequence.
摘要翻译： 牛皮纸浆漂白至约90CPPA或更高的亮度，而不使用具有商业上可接受的强度性能的氯化有机化合物。 在牛皮纸浆的生产过程中，通过在蒸煮器中的第一再循环回路中加入牛皮纸白液，和/或在蒸煮器中的第二个洗涤循环回路，对其进行扩展的脱木质素; 或通过常规制浆，然后是两个氧气阶段，并在阶段之间进行洗涤。 然后对延长的脱木素纸浆进行臭氧漂白，臭氧剂量小于1.0％（优选小于约0.5％）。 臭氧漂白序列可以是（ZE）P（ZE）P序列。
-
-
-
-
-
-
-
-
-
搜索结果
35 条记录 (耗时 0.034 秒)