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1.发明授权公开(公告)号：US06368453B1
公开(公告)日：2002-04-09
申请号：US09520761
申请日：2000-03-07
IPC分类号： D21C706
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.
摘要翻译： 在生产化学纸浆时将粉碎的纤维素纤维材料的浆料喂入蒸煮器（连续或间歇）中，可以消除在进料系统（优选包括高压进料器）中使用的一个罐，而不会随之而来的损失 其功能是提供一个单一的罐，其具有控制在淤浆泵中提供浆料的浆料管道中的液体液面的组合功能，并且储存并基本上连续地向连接到蒸煮器的补充液体泵供应液体。 单个罐优选地围绕着浆化管道并且与其基本上同心并且与液体连通。 可以在管道的底部和与浆料泵的连接之间提供3-48英寸的间隙。 可以在间隙中设置屏幕或过滤器，该间隙基本上被箱体包围。 从高压给料器的低压出口到制浆装置（如围绕它的导管和罐或常规的夹管）的返回系统可以没有一个或多个在线排水器，液位罐，离心机 分离器和缓冲罐。
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公开(公告)号：US5401361A
公开(公告)日：1995-03-28
申请号：US963492
申请日：1992-10-20
CPC分类号： D21C3/24 , D21C11/0021 , D21C7/00
摘要： A conventional continuous digester is modified so as to provide a countercurrent cook throughout the entire height of the digester. Instead of connecting an upper mid-point extraction screen to a flash tank, that screen is closed off and extraction is provided at the top of the digester, utilizing an in-line drainer to remove some of the liquor and feed it to a flash tank. The liquor not removed recirculates through a pressure screen to an impregnation vessel, and then back to the digester. A cooling circulation is provided just below the top extraction. Valves are provided in the liquor discharged from the drainer and a conduit from the upper mid-point extraction which may be manipulated to return the digester to conventional operation, including the addition of white liquor to the bottom recirculation.
摘要翻译： 常规的连续蒸煮器被修改为在蒸煮器的整个高度上提供逆流烹饪。 代替将上部中点提取屏幕连接到闪光罐，该屏幕被关闭并且在蒸煮器的顶部提供提取，利用在线排水器去除一些液体并将其送入闪蒸罐 。 未除去的液体通过压力筛网再循环到浸渍容器中，然后返回到蒸煮器。 在顶部提取物的正下方提供冷却循环。 在从排水器排出的液体中提供阀和来自上中点萃取的管道，其可以被操作以将蒸煮器返回到常规操作，包括向底部再循环中加入白液。
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3.发明授权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：US06841042B2
公开(公告)日：2005-01-11
申请号：US10354179
申请日：2003-01-30
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：US06325890B1
公开(公告)日：2001-12-04
申请号：US09568984
申请日：2000-05-11
IPC分类号： D21C706
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.
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，使用位于处理容器顶部至少三十英尺处的一个或多个浆料泵来加压蒸汽和浆化的碎屑，并将浆料加压至至少约10巴的压力。 来自蒸煮器顶部的返回管线可以但不一定可操作地连接到一个或多个泵，并且如果连接到泵，则返回管线中的液体可以被冷却到不闪光的温度 在处理期间。 可以建立与一个或所有浆料泵相关联的循环回路以便于启动。 可以提供静态分流器以将来自最后一个泵的流分离成两个或更多个消化器。
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公开(公告)号：US06451172B1
公开(公告)日：2002-09-17
申请号：US09573390
申请日：2000-05-18
IPC分类号： D21C700
CPC分类号： D21C7/06
摘要： A drainer for a feed system for a cellulose digester has a substantially open and hollow inlet (devoid of a spiral flow imparter or a like flow restriction) and a substantially annular screen within an elongated housing having a flow direction between the housing inlet and outlet. The screen is slotted and the slots are at an angle &agr; between 5-90° with respect to the flow direction, so as to minimize passage of cellulose material through the slots, or clogging of the slots.
摘要翻译： 用于纤维素消化器的进料系统的排水器具有基本上敞开和中空的入口（没有螺旋流动力矩或类似流动限制），以及细长壳体内的基本上环形的筛网，其具有在壳体入口和出口之间的流动方向。 屏幕是开槽的，并且槽相对于流动方向处于5-90°之间的角度α，以便最小化纤维素材料通过狭槽的通道或狭槽的堵塞。
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公开(公告)号：US06551462B2
公开(公告)日：2003-04-22
申请号：US09975998
申请日：2001-10-15
IPC分类号： D21C706
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.
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，使用位于处理容器顶部至少三十英尺处的一个或多个浆料泵来加压蒸汽和浆化的碎屑，并将浆料加压至至少约10巴的压力。 来自蒸煮器顶部的返回管线可以但不一定可操作地连接到一个或多个泵，并且如果连接到泵，则返回管线中的液体可以被冷却到不闪光的温度 在处理期间。 可以建立与一个或所有浆料泵相关联的循环回路以便于启动。 可以提供静态分流器以将来自最后一个泵的流分离成两个或更多个消化器。
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公开(公告)号：US5958181A
公开(公告)日：1999-09-28
申请号：US911366
申请日：1997-08-07
摘要： A method of treating wood chips allows chemical pulp (e. g. kraft pulp) to be produced having enhanced fiber strength properties. In a first zone or stage the chips are cool impregnated (e. g. a temperature of about 60-120.degree. C.) with a first alkali-containing liquid (25-35 g/l expressed as NaOH). In the top of a continuous digester in a second zone or stage the chips are then treated with a second alkali-containing liquid having an alkali concentration at least 5 g/l less than the first liquid (e. g. 10-20 g/l) and a temperature of between about 120-160.degree. C. (e. g. 130-150.degree. C.). An extraction typically takes place to effect the change in treatment zones. After the second zone the chips are cooked at about 140-180.degree. C. (e. g. 150-170.degree. C.), and higher than in the second zone.
摘要翻译： 处理木屑的方法允许生产具有增强的纤维强度性质的化学纸浆（例如牛皮纸浆）。 在第一区域或阶段中，将芯片用第一含碱液体（25-35g / l，以NaOH表示）进行冷浸渍（例如约60-120℃的温度）。 在第二区域或阶段中的连续消化器的顶部，然后用比第一液体（例如10-20g / l）小至少5g / l的碱浓度的第二碱性液体处理切片，和 温度在约120-160℃之间（例如130-150℃）。 通常会进行提取以实现治疗区域的改变。 在第二区之后，将芯片在约140-180℃（例如150-170℃）下煮熟，并高于第二区。
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公开(公告)号：US06447645B1
公开(公告)日：2002-09-10
申请号：US09953263
申请日：2001-09-17
IPC分类号： D21C700
摘要： A feed system for a cellulose pulp treating vessel (such as a continuous digester) is not limited by the required L/W ratio of the pump feeding a wood chip slurry to a high pressure transfer device, the feed system may be kept at a low temperature to minimize flashing of liquid into steam, and a return conduit from the treatment vessel to the transfer device high pressure inlet may be eliminated. Some of the liquid is removed from the slurry just before the low pressure inlet to the transfer device, and/or just after the high pressure outlet, to reduce the L/W ratio of the slurry by at least 0.25, e.g. from 3.0:1 to 2.25:1 just before the low pressure inlet, and from, 7.0:1 to 5.0:1 substantially immediately after the high pressure outlet.
摘要翻译： 用于纤维素纸浆处理容器（例如连续蒸煮器）的进料系统不受供应木屑浆料与高压转移装置的泵的所需L / W比的限制，进料系统可以保持在低 温度以最小化液体进入蒸汽的闪烁，并且可以消除从处理容器到转印装置高压入口的返回管道。 一些液体刚刚在转移装置的低压入口之前和/或刚刚在高压出口之后从浆料中除去，以将浆料的L / W比降低至少0.25，例如。 在低压入口之前为3.0:1至2.25:1，并且在高压出口之后基本上为7.0:1至5.0:1。
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公开(公告)号：US06436233B1
公开(公告)日：2002-08-20
申请号：US09573046
申请日：2000-05-18
IPC分类号： D21C110
摘要： A feed system for a cellulose pulp treating vessel (such as a continuous digester) is not limited by the required L/W ratio of the pump feeding a wood chip slurry to a high pressure transfer device, the feed system may be kept at a low temperature to minimize flashing of liquid into steam, and a return conduit from the treatment vessel to the transfer device high pressure inlet may be eliminated. Some of the liquid is removed from the slurry just before the low pressure inlet to the transfer device, and/or just after the high pressure outlet, to reduce the L/W ratio of the slurry by at least 0.25, e.g. from 3.0:1 to 2.25:1 just before the low pressure inlet, and from 7.0:1 to 5.0:1 substantially immediately after the high pressure outlet.
摘要翻译： 用于纤维素纸浆处理容器（例如连续蒸煮器）的进料系统不受供应木屑浆料与高压转移装置的泵的所需L / W比的限制，进料系统可以保持在低 温度以最小化液体进入蒸汽的闪烁，并且可以消除从处理容器到转印装置高压入口的返回管道。 一些液体刚刚在转移装置的低压入口之前和/或刚刚在高压出口之后从浆料中除去，以将浆料的L / W比降低至少0.25，例如。 在低压入口之前的3.0:1至2.25:1，并且在高压出口之后基本上立即从7.0:1至5.0:1。
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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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