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1.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。
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公开(公告)号：US4944842A
公开(公告)日：1990-07-31
申请号：US40245
申请日：1987-03-26
IPC分类号： D21C9/10
CPC分类号： D21C9/1026
摘要： Method and apparatus for reducing contamination in processed pulp and in white water effluent discharged from a pulp dryer or paper making mill. The system includes multiple pulp bleaching and washing stages wherein white water effluent discharge from the dryer or paper making mill is fed to the next-to-last washing stage and fresh water is supplied to the last washing stage.
摘要翻译： 用于减少加工纸浆和从纸浆干燥机或造纸厂排出的白水废水中污染的方法和装置。 该系统包括多个纸浆漂白和洗涤阶段，其中将来自干燥机或造纸厂的白水流出物排出到下一个洗涤阶段，并将淡水供应到最后一个洗涤阶段。
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公开(公告)号：US06576084B1
公开(公告)日：2003-06-10
申请号：US09658910
申请日：2000-09-12
IPC分类号： D21C320
摘要： Chemical pulp is produced from a slurry of comminuted cellulosic fibrous material using a beneficial additive such as AQ, or polysulfide. In the first treatment zone the effective alkali concentration and temperature conditions are such so that substantially no alkali degradation of the cellulose occurs, but so that the material is effectively impregnated with the additive. Then the material is treated with an alkaline cooking liquor, at cooking temperature, to produce a chemical cellulose pulp with higher yield or strength than if the low temperature, low alkali, additive pretreatment was not practiced. Typical alkali and temperature conditions in the first zone are less than 10 g/l expressed as NaOH, and between about 80-130° C., e.g. about 80-110° C. The first zone is preferably a feed system (which may include a separate impregnation vessel) for a continuous digester, while cooking is in a continuous digester.
摘要翻译： 使用有益的添加剂如AQ或多硫化物由粉碎的纤维素纤维材料的浆料生产化学纸浆。 在第一处理区域中，有效的碱浓度和温度条件使得基本上不会发生纤维素的碱降解，而是使材料有效地浸渍添加剂。 然后在烹调温度下用碱性蒸煮液处理该材料，以产生比没有实施低温，低碱添加剂预处理更高的产率或强度的化学纤维素纸浆。 第一区中典型的碱和温度条件小于10g，以NaOH表示，在约80-130℃之间，例如， 约80-110℃。第一区域优选是用于连续蒸煮器的进料系统（其可以包括单独的浸渍容器），同时烹饪在连续蒸煮器中。
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4.发明授权Cellulose slurry treating systems for adding AQ to a cellulose slurry in the substantial absence of alkali 有权用于在基本上不存在碱的情况下将纤维素浆料加入到纤维素浆料中的纤维素浆料处理系统公开(公告)号：US06569289B2
公开(公告)日：2003-05-27
申请号：US09987596
申请日：2001-11-15
IPC分类号： D21C320
摘要： Chemical pulp is produced from a slurry of comminuted cellulosic fibrous material using a beneficial additive such as AQ, or polysulfide. In the first treatment zone the effective alkali concentration and temperature conditions are such so that substantially no alkali degradation of the cellulose occurs, but so that the material is effectively impregnated with the additive. Then the material is treated with an alkaline cooking liquor, at cooking temperature, to produce a chemical cellulose pulp with higher yield or strength than if the low temperature, low alkali, additive pretreatment was not practiced. Typical alkali and temperature conditions in the first zone are less than 10 g/l expressed as NaOH; and between about 80-130° C., e.g. about 80-110° C. The first zone is preferably a feed system (which may include a separate impregnation vessel) for a continuous digester, while cooking is in a continuous digester.
摘要翻译： 使用有益的添加剂如AQ或多硫化物由粉碎的纤维素纤维材料的浆料生产化学纸浆。 在第一处理区域中，有效的碱浓度和温度条件使得基本上不会发生纤维素的碱降解，而是使材料有效地浸渍添加剂。 然后在烹调温度下用碱性蒸煮液处理该材料，以产生比没有实施低温，低碱添加剂预处理更高的产率或强度的化学纤维素纸浆。 第一个区域的典型碱性和温度条件小于10g，以NaOH表示; 和约80-130℃之间。 约80-110℃。第一区域优选是用于连续蒸煮器的进料系统（其可以包括单独的浸渍容器），同时烹饪在连续蒸煮器中。
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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。
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公开(公告)号：US4927312A
公开(公告)日：1990-05-22
申请号：US195890
申请日：1988-05-19
CPC分类号： B65D90/623 , D21B1/021 , D21C7/06
摘要： Chip gates are provided adjacent the lower end of an inlet chute to a presteaming vessel for a digester in a pulp production system. The chip gates are operated to maintain a level of chips within the inlet chute sufficient such that the chips preclude egress of noxious odorous gas from the presteaming vessel, while simulataneously the chips are discharged into the vessel.
摘要翻译： 芯片浇口邻近入口槽的下端设置到纸浆生产系统中用于蒸煮器的预蒸发容器。 操作芯片闸门以保持入口槽中的芯片水平足够，使得芯片排除来自预蒸发容器的有害恶臭气体的排出，同时将芯片排放到容器中。
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7.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。
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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.
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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。
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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。
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