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公开(公告)号：US20040089430A1
公开(公告)日：2004-05-13
申请号：US10432657
申请日：2003-12-18
发明人： Thomas Fant , Mikael Svedman , Lari Lammi
IPC分类号： D21C003/26 , D21C007/00 , D21C011/00 , D21C007/14
摘要： A continuous, alkaline process for the production of pulp from wood chips, wherein the preheated chips are subjected to an extended impregnation step for at least 60 min, preferably longer, at a temperature not exceeding the impregnation liquor boiling point at atmospheric conditions, and a rapid heating and cooking period of less than 65 min, preferably shorter, followed by cooling to below reaction temperature. Fresh alkali is added both during impregnation and the heating/cooking period.
摘要翻译： 一种用于从木片生产纸浆的连续的碱性方法，其中预热的碎片在大气条件下在不超过浸渍液沸点的温度下进行至少60分钟，优选更长的浸渍步骤，并且 快速加热烹饪时间小于65分钟，优选较短，然后冷却至低于反应温度。 在浸渍和加热/烹饪期间都加入新鲜的碱。
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公开(公告)号：US20040079498A1
公开(公告)日：2004-04-29
申请号：US10415771
申请日：2003-10-22
IPC分类号： D21C003/26 , D21C007/14 , D21C009/02 , D21C011/12 , D21C011/14 , D21C001/00 , D21C011/10
CPC分类号： D21C3/02 , D21C11/0021 , D21C11/04
摘要： This invention refers to a method for producing pulp in an alkaline digesting process comprising the following steps: charging lignocellulosic material to a digester system; pre-treating said lignocellulosic material with an impregnation liquor and subsequently with a hotter liquor containing black liquor, simultaneously displacing spent liquor; heating and cooking said lignocellulosic material to produce cooked lignocellulosic material and cooking liquor; displacing a portion of said cooking liquor at cooking temperature from said digester to a first section by supplying a washing liquid; further displacing a second portion of displaced liquor from said digester system to at least a second section by supplying further washing liquid until the temperature of said second portion of displaced liquor drops to a temperature of at least about the boiling point of said cooking liquor at atmospheric pressure, said second portion of displaced liquor having a dry solids content substantially lower than the initial dry solids content of the cooking liquor and substantially lower than that of said first portion of displaced liquor. The method is characterized in that substantial parts of said second portion of displaced liquor is heated by the heat of the first portion of displaced liquor, whereby said first portion having a high solids content is prevented from being reused in a digester and said heated second portion is further used as hot liquor in the pre-treatment and heating of said lignocellulosic material.
摘要翻译： 本发明涉及一种在碱性消化过程中生产纸浆的方法，包括以下步骤：将木质纤维素材料装入消化器系统; 用浸渍液预处理所述木质纤维素材料，随后用含有黑液的较热液体同时置换废液; 加热和烹饪所述木质纤维素材料以产生煮熟的木质纤维素材料和蒸煮液; 通过提供洗涤液将烹饪温度下的所述蒸煮液的一部分从所述蒸煮器移出到第一部分; 通过进一步提供洗涤液进一步将置换的液体的第二部分从所述蒸煮器系统移动到至少第二部分，直到所述第二部分置换的液体的温度在大气压下至少达到所述蒸煮液的沸点的温度 所述第二部分的置换液体的干固体含量基本上低于蒸煮液的初始干固体含量，并且基本上低于所述第一部分置换的液体。 该方法的特征在于，所述第二部分置换的液体的大部分被第一部分置换的液体的热量加热，由此所述具有高固体含量的第一部分被防止重新用于蒸煮器中，并且所述加热的第二部分 进一步用作所述木质纤维素材料的预处理和加热中的热液。
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3.发明申请公开(公告)号：US20040060674A1
公开(公告)日：2004-04-01
申请号：US10260550
申请日：2002-10-01
发明人： George Seymour
IPC分类号： D21C007/14
摘要： The measurement and control of the percent consistency of pulp leaving a blow tank in a pulp operation is improved by using digester data and additional temperature measurements. The percent consistency of pulp is determined by using the following data: 1) the temperature and relative amounts of dry pulp, liquid and dissolved solids in a blown mixture entering the blow tank; 2) the temperature and amount of dissolved solids in a first stage filtrate liquor; and 3) the temperature of a diluted pulp mixture leaving the blow tank. Once the percent consistency of pulp is accurately measured, this value is then used to control the tonnage rate of pulp entering a first washer in a pulp washing operation.
摘要翻译： 通过使用蒸煮器数据和额外的温度测量，可以提高纸浆运行中离开吹塑罐的纸浆百分比一致性的测量和控制。 通过使用以下数据确定纸浆的一致性百分比：1）进入吹塑罐的吹入混合物中干浆，液体和溶解固体的温度和相对量; 2）第一级滤液中溶解固体的温度和量; 和3）离开吹塑罐的稀释的纸浆混合物的温度。 一旦准确地测量了纸浆的百分比一致性，则该值被用于控制在纸浆清洗操作中进入第一洗衣机的纸浆的吨位率。
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公开(公告)号：US20040055717A1
公开(公告)日：2004-03-25
申请号：US10470357
申请日：2003-07-25
IPC分类号： D21C007/14 , G01N033/34 , G01N033/46 , D21F001/08
CPC分类号： G01N29/4418 , D21B1/02 , D21C1/10 , G01N29/07 , G01N29/4445 , G01N33/34 , G01N33/46 , G01N2291/0238 , G01N2291/2634
摘要： A method of selecting bulk wood units for mechanical pulping, which consists of establishing a reference scale by selecting a test sample measuring the acoustic velocity through each sample unit, selecting acoustic velocity band from the sample results, processing the sample units using known mechanical pulping processes, testing the resulting pulp to measure the freeness of the pulp, and then graphing the pulping energy measurements against the pulp freeness measurements for each of the velocity bands to produce a reference scale; measuring the acoustic velocity through each of the units, comparing the velocity measurement for each unit against the reference scale, and then dividing the tested units into subgroups according to the predicted mechanical pulping energy.
摘要翻译： 选择用于机械制浆的散装木材单元的方法，其包括通过选择测量通过每个样品单元的声速的测试样品建立参考比例，从样品结果中选择声速带，使用已知的机械制浆方法处理样品单元 测试所得到的纸浆以测量纸浆的游离度，然后将制浆能量测量与每个速度带的纸浆游离度测量值进行比较，以产生参考比例; 通过每个单元测量声速，将每个单位的速度测量与参考刻度进行比较，然后根据预测的机械制浆能量将测试单位分成亚组。
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公开(公告)号：US20010027849A1
公开(公告)日：2001-10-11
申请号：US09882789
申请日：2001-06-14
发明人： Reijo K. Salminen
IPC分类号： D21C003/26 , D21C011/14 , D21C007/14
摘要： A continuous pulp digester having an elongate horizontally aligned pressure vessel through which the wood chips and digesting fluid flow in a forward direction. In a first and second embodiments within the pressure vessel there is an inner container defining an elongate chamber or passageway having a square cross sectional configuration. In a third embodiment the digesting chamber is cylindrical. At locations along the digester, there are several pair of liquid flow inlets and liquid flow outlets which enable filtrate from a pulp washer and a digesting agent to be moved into and across the digesting chamber to flow out the flow outlets. These are recirculated in a net upstream flow pattern toward the outlet end of the digester, and discharged as black liquor at different locations in the digester.
摘要翻译： 连续的纸浆蒸煮器具有细长的水平对准的压力容器，木片和消化液通过该压力容器向前流动。 在压力容器内的第一和第二实施例中，存在限定具有正方形横截面构造的细长室或通道的内部容器。 在第三实施例中，消化室是圆柱形的。 在消化器的位置处，有几对液体流入口和液体流出口，使得来自纸浆清洗器和消化剂的滤液能够移动到消化室中并穿过消化室流出流出口。 这些以净上游流动模式再循环到消化器的出口端，并在蒸煮器的不同位置作为黑液排出。
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公开(公告)号：US20040050510A1
公开(公告)日：2004-03-18
申请号：US10660661
申请日：2003-09-12
申请人： Andritz Inc.,
发明人： Joseph R. Phillips
IPC分类号： D21C007/08 , D21C007/14
CPC分类号： D21D5/026 , B01D33/11 , B01D33/804 , B01D37/02
摘要： A fiber mat is formed on a screen cylinder of a pressurized fiber filtering device used to filter particles from a liquid stream. The fiber mat is a fine particle filter to remove small particles from the liquid stream. The fiber mat is formed by injecting cellulosic fibers into the liquid stream flowing into the fiber filtering device. These fibers collect on the screen cylinder as the liquid flows through the cylinder. The collection of fibers forms the fine filtering mat.
摘要翻译： 在用于从液体流中过滤颗粒的加压纤维过滤装置的筛筒上形成纤维垫。 纤维垫是细颗粒过滤器，用于从液体流中除去小颗粒。 通过将纤维素纤维注入流入纤维过滤装置的液体流中而形成纤维垫。 当液体流过圆筒时，这些纤维聚集在筛筒上。 纤维的集合形成精细的过滤垫。
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公开(公告)号：US20040011482A1
公开(公告)日：2004-01-22
申请号：US10148210
申请日：2002-10-04
IPC分类号： D21B001/16 , D21C007/14 , D21C011/00 , D21C011/06
摘要： The invention relates to a method for avoiding and/or reducing the deposition of volatile and non-volatile wood components in gas-bearing systems, whereby at least one of the volatile wood components, at least partly, condenses in the gas-bearing system and the gas contains at least one compound with a similar condensation profile to the volatile wood component and which at least reduces the deposition of volatile wood components or the reaction products thereof. The invention further relates to a method for reducing and/or avoiding the deposition of wood components on machines and/or equipment components for the production of wood fiber materials from wood chippings, in which the shredding of the wood is achieved in the presence of a compound which forms a film on the surfaces of the above machines and/or equipment components and at least reduces the deposition of volatile wood components and/or the reaction products thereof.
摘要翻译： 本发明涉及一种用于避免和/或减少气体承载系统中的挥发性和非挥发性木质组分的沉积的方法，其中至少一种挥发性木质组分至少部分地在气体承载系统中冷凝， 该气体含有至少一种具有与挥发性木材组分相似的冷凝轮廓的化合物，并且至少减少挥发性木材组分或其反应产物的沉积。 本发明还涉及一种用于减少和/或避免木材部件沉积在机器和/或设备部件上的方法，用于从木屑生产木纤维材料，其中在存在木材的情况下实现木材的切碎 在上述机器和/或设备部件的表面上形成膜的化合物，并且至少减少挥发性木材组分和/或其反应产物的沉积。
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8.发明申请公开(公告)号：US20030145962A1
公开(公告)日：2003-08-07
申请号：US10195230
申请日：2002-07-15
IPC分类号： D21C007/08 , D21C007/12 , D21C007/14
摘要： A system and method for improved filtrate addition in a continuous digester is disclosed. The system comprises a blow dilution header/nozzle assembly located in the blow dilution zone of the digester. The header/nozzle assembly comprises (i) a plurality of nozzles for introducing and distributing filtrate into the blow dilution zone, and (ii) a plurality of measurement and control devices for monitoring and controlling filtrate flow through the plurality of nozzles. The method comprises (a) introducing and distributing filtrate through a plurality of nozzles of a blow dilution header/nozzle assembly in the blow dilution zone of the continuous digester; and (b) measuring and controlling the filtrate flow through each nozzle of the plurality of nozzles.
摘要翻译： 公开了一种在连续蒸煮器中改进滤液添加的系统和方法。 该系统包括位于蒸煮器的吹塑稀释区域中的吹塑稀释头/喷嘴组件。 头部/喷嘴组件包括（i）用于将滤液引入和分配到吹入稀释区域中的多个喷嘴，以及（ii）用于监测和控制通过多个喷嘴的滤液流动的多个测量和控制装置。 该方法包括（a）通过连续蒸煮器的吹扫稀释区中的吹扫稀释头/喷嘴组件的多个喷嘴引入和分配滤液; 和（b）测量和控制通过多个喷嘴的每个喷嘴的滤液流量。
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公开(公告)号：US20030089469A1
公开(公告)日：2003-05-15
申请号：US10321439
申请日：2002-12-18
申请人： Andritz, Inc.
IPC分类号： D21C003/26 , D21C007/06 , D21C007/08 , D21C007/14
CPC分类号： D21C7/06
摘要： In the feeding of a slurry of comminuted cellulosic fibrous material to a digester (continuous or batch) in the production of chemical pulp, one of the tanks used in the feed system (which preferably includes a high pressure feeder) may be eliminated without consequent loss of its function by providing a single tank with the combined functions of controlling the level of liquid in a slurrying conduit which supplies slurry to a slurry pump, and storing and substantially continuously supplying liquid to a make-up liquid pump connected to the digester. The single tank preferably surrounds the slurrying conduit and is substantially concentric, and in liquid communication, with it. A gap of 3-48 inches may be provided between the bottom of the conduit and a connection to the slurry pump. A screen or strainer may be provided in the gap, which is substantially surrounded by the tank. The return system from the low pressure outlet of the high pressure feeder to the slurrying device (like the conduit and tank surrounding it, or a conventional clip tube) may be devoid of one or more of an in-line drainer, level tank, centrifugal separator, and surge tank.
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公开(公告)号：US20030089467A1
公开(公告)日：2003-05-15
申请号：US10321428
申请日：2002-12-18
申请人： Andritz Inc.
IPC分类号： D21C003/26 , D21C007/14 , D21C007/06 , D21C007/08 , D21C007/12
CPC分类号： D21C7/06
摘要： In the feeding of a slurry of comminuted cellulosic fibrous material to a digester (continuous or batch) in the production of chemical pulp, one of the tanks used in the feed system (which preferably includes a high pressure feeder) may be eliminated without consequent loss of its function by providing a single tank with the combined functions of controlling the level of liquid in a slurrying conduit which supplies slurry to a slurry pump, and storing and substantially continuously supplying liquid to a make-up liquid pump connected to the digester. The single tank preferably surrounds the slurrying conduit and is substantially concentric, and in liquid communication, with it. A gap of 3-48 inches may be provided between the bottom of the conduit and a connection to the slurry pump. A screen or strainer may be provided in the gap, which is substantially surrounded by the tank. The return system from the low pressure outlet of the high pressure feeder to the slurrying device (like the conduit and tank surrounding it, or a conventional clip tube) may be devoid of one or more of an in-line drainer, level tank, centrifugal separator, and surge tank.
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