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公开(公告)号：US20030205343A1
公开(公告)日：2003-11-06
申请号：US10418481
申请日：2003-04-18
发明人： Reijo K. Salminen
IPC分类号： D21C003/20 , D21C009/02 , D21C007/06 , D21C007/08 , D21C007/14 , D21C007/10
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.
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2.发明申请Feeding comminuted fibrous material using high pressure screw and centrifugal pumps 有权使用高压螺杆和离心泵进料粉碎的纤维材料公开(公告)号：US20030173047A1
公开(公告)日：2003-09-18
申请号：US10354179
申请日：2003-01-30
申请人： Andritz, Inc.
IPC分类号： D21C003/26 , D21C007/06 , D21C007/08
摘要： A system and method for feeding comminuted cellulosic fibrous material such as wood chips to the top of a treatment vessel such as a continuous digester provide enhanced simplicity, operability, and maintainability by eliminating the high pressure transfer device conventionally used in the prior art. Instead of a high pressure transfer device the steamed and slurried chips are pressurized using a single vane slurry pump in series with a centrifugal slurry pump both of which are located at least thirty feet below the top of the treatment vessel and for pressurizing the slurry to a pressure of at least about 10 bar gauge.
摘要翻译： 将诸如木屑的粉碎的纤维素纤维材料进料到诸如连续蒸煮器的处理容器的顶部的系统和方法通过消除现有技术中常规使用的高压转移装置提供了增强的简单性，可操作性和可维护性。 代替高压转移装置，使用与离心式浆液泵串联的单一叶片浆料泵来加压蒸出和制浆的碎屑，两者均位于处理容器顶部至少三十英尺处，并将浆料加压至 至少约10巴表压的压力。
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公开(公告)号：US20020108728A1
公开(公告)日：2002-08-15
申请号：US10084289
申请日：2002-02-25
发明人： Reijo K. Salminen
IPC分类号： D21C003/24 , D21C003/26 , D21C009/02 , D21C007/00 , D21C007/08
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：US20020060024A1
公开(公告)日：2002-05-23
申请号：US09803015
申请日：2001-03-12
IPC分类号： D21C007/06 , D21C007/08 , D21C007/14 , D21C007/10
摘要： A system and method for feeding comminuted cellulosic fibrous material such as wood chips to the top of a treatment vessel such as a continuous digester provide enhanced simplicity, operability, and maintainability by eliminating the high pressure transfer device conventionally used in the prior art. Instead of a high pressure transfer device the steamed and slurried chips are pressurized using one or more slurry pumps located at least thirty feet below the top of the treatment vessel and for pressurizing the slurry to a pressure of at least about 10 bar gauge. A return line from the top of the digester may, but need not necessarily, be operatively connected to the one or more pumps and if connected to the pumps, the liquid in the return line may be cooled to a temperature at which it will not flash during handling. Recirculation loops may be established associated with one or all of the slurry pumps to facilitate startup. A static flow splitter may be provided to split the flow from the last pump to two or more digesters.
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公开(公告)号：US20020026991A1
公开(公告)日：2002-03-07
申请号：US09987596
申请日：2001-11-15
IPC分类号： D21C003/26 , D21C003/20 , D21C003/04 , D21C007/00 , D21C007/06 , D21C007/08
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 80-130null C., e.g. about 80-110null 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：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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7.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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公开(公告)号：US20030089466A1
公开(公告)日：2003-05-15
申请号：US10321424
申请日：2002-12-18
申请人： Andritz, Inc.
IPC分类号： D21C001/10 , D21C003/26 , D21C007/06 , D21C007/08
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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