公开(公告)号：US06506283B2

公开(公告)日：2003-01-14

申请号：US09770408

申请日：2001-01-29

申请人： Kaj O. Henricson ,  Aki Hannu Vilpponen ,  Hannu Olavi Ramark ,  Auvo Kimmo Kettunen ,  C. Bertil Stromberg

发明人： Kaj O. Henricson ,  Aki Hannu Vilpponen ,  Hannu Olavi Ramark ,  Auvo Kimmo Kettunen ,  C. Bertil Stromberg

IPC分类号： D21C706

CPC分类号： D21C1/06

摘要： The strength properties of chemical cellulose pulp (particularly kraft pulp) are improved by substituting a cold impregnation soak for conventional impregnation procedures. After steaming, wood chips are soaked in an alkaline liquid at a temperature of about 80-110° C. (preferably 80-100° C., or 90-105° C.) for between one-half-72 hours (typically about 2-4 hours) at a pressure of about 0-15 bar (preferably about 1-5 bar), to dissolve at least about 8% of the wood (preferably about 10-20%) and at least about 15% of the lignin. The alkaline liquid used preferably contains sulfide (e.g. black liquor, green liquor, white liquor, or mixtures thereof), but almost any alkaline liquid having an alkali concentration of about 1.0 mole of NaOH/liter or less (typically about 0.75 m/l or less) is suitable. The wood chips are then raised to a cooking temperature of about 145-180° C. and cooked to produce the cellulose chemical pulp. There may be an intermediate step, between soaking and raising the cooking temperature, of heating the wood chips to a temperature of about 110-150° C. (preferably about 120-140° C.) for about 10-90 minutes (preferably about 10-30 minutes). Alternatively or additionally the majority of the dissolved lignin (and/or other solids) may be removed before raising the wood chips to cooking temperature. The system for treating the wood chips need only include a low pressure soaking vessel (with an associated pump or other transfer device) in addition to conventional equipment.

公开(公告)号：US06340409B1

公开(公告)日：2002-01-22

申请号：US08054588

申请日：1993-04-29

申请人： Lewis Donald Shackford

发明人： Lewis Donald Shackford

IPC分类号： D21C706

CPC分类号： D21C9/1057 ,  D21C9/10 ,  D21C9/1031 ,  D21C9/153

摘要： A pulp bleaching line has an initial stage using gaseous bleaching reagent followed by its subsequent stages without intervening washing or pumping steps. The pulp is transported from the initial stage through a mixer in which the pulp is heated and/or dosed with bleaching chemicals and through the subsequent stage by retained gas pressure developed in the initial stage. A portion of the retained gas may be separated and purged from the mixer through a pressure regulating device to optimize pressure for processes which follow the mixer/heater. This permits elimination of a washer and pump normally provided between the initial reactor and subsequent bleaching stage.

摘要翻译： 纸浆漂白线具有初始阶段，其使用气体漂白剂，随后是其后续阶段，而不需要中间洗涤或泵送步骤。 纸浆从初始阶段通过混合器运输，其中纸浆被加热和/或配量漂白化学品，并通过在初始阶段产生的保留气体压力通过后续阶段。 保留气体的一部分可以通过压力调节装置从混合器中分离和净化，以优化按照混合器/加热器的过程的压力。 这允许消除通常设置在初始反应器和随后的漂白阶段之间的洗涤器和泵。

公开(公告)号：US06280569B1

公开(公告)日：2001-08-28

申请号：US09404587

申请日：1999-09-24

申请人： Jay K. Sheerer

发明人： Jay K. Sheerer

IPC分类号： D21C706

CPC分类号： D21C7/06

摘要： The flow of a liquid slurry of comminuted cellulosic fibrous material (e.g. wood chips) in a vertical vessel is made more uniform by providing a plurality of vertically spaced sets of either substantially continuous or discontinuous protrusions which extend inwardly from the internal surface of the vessel a maximum distance of between about 2-12 inches. A preferred vessel is a continuous or batch digester. The protrusions may have an arcuate, rectangular, isosceles or scalene triangular, right triangular, or trapezoidal cross-section, and may be spaced from each other vertically between about 1-12 feet, and have a height of between about 1-3 feet. Discontinuous protrusions have a preferred arcuate spacing of between 1-10 feet.

摘要翻译： 通过提供从容器的内表面向内延伸的基本上连续的或不连续的突起的多个垂直间隔的组合，将垂直容器中粉碎的纤维素纤维材料（例如木片）的液体浆料流动更均匀， 最大距离在2-12英寸之间。 优选的容器是连续或分批蒸煮器。 突起可以具有弓形的，矩形的等腰或斜角三角形，右三角形或梯形横截面，并且可以在约1-12英尺之间垂直彼此间隔开，并且具有在约1-3英尺之间的高度。 不连续的突起具有1-10英尺之间的优选弧形间距。

公开(公告)号：US06451165B1

公开(公告)日：2002-09-17

申请号：US09710752

申请日：2000-11-09

申请人： Klaus Doelle ,  Robert J. Matz

发明人： Klaus Doelle ,  Robert J. Matz

IPC分类号： D21C706

CPC分类号： D21C7/00

摘要： A pulper in a stock preparation system includes a housing with a fiber inlet, at least one water inlet, at least one outlet and an inner chamber. A plurality of rotatable augers extend into the inner chamber.

摘要翻译： 储备制备系统中的碎浆机包括具有纤维入口，至少一个进水口，至少一个出口和内室的壳体。 多个可旋转螺旋推进器延伸到内腔中。

公开(公告)号：US06368453B1

公开(公告)日：2002-04-09

申请号：US09520761

申请日：2000-03-07

申请人： Auvo K. Kettunen ,  Richard O. Laakso ,  C. Bertil Stromberg ,  J. Robert Prough ,  Jay J. Miele

发明人： Auvo K. Kettunen ,  Richard O. Laakso ,  C. Bertil Stromberg ,  J. Robert Prough ,  Jay J. Miele

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。

公开(公告)号：US06551462B2

公开(公告)日：2003-04-22

申请号：US09975998

申请日：2001-10-15

申请人： J. Robert Prough ,  C. Bertil Stromberg ,  Tim S. Pease

发明人： J. Robert Prough ,  C. Bertil Stromberg ,  Tim S. Pease

IPC分类号： D21C706

CPC分类号： D21C1/10 ,  D21C7/06

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。

公开(公告)号：US06514380B1

公开(公告)日：2003-02-04

申请号：US09048289

申请日：1998-03-26

申请人： Antero Laine ,  Olavi Pikka

发明人： Antero Laine ,  Olavi Pikka

IPC分类号： D21C706

CPC分类号： D21C9/147 ,  D21C9/02

摘要： Chemical pulp is produced by cooking comminuted cellulosic fibrous material (e.g. wood chips) in a continuous digester or batch digesters or produce brown stock, and washing the brown stock in a brown stock washer to produce chemical pulp, oxygen delignifying the chemical pulp at medium consistency, and then screening the oxygen delignified pulp to produce an accept fraction and a shive-containing reject fraction. Drawbacks inherent in the prior art are overcome by directly transporting (i.e. without refining or accessory oxygen delignification) the shive-containing rejects fraction to the main fiber line before oxygen delignification (e.g. to just before a mixer for the oxygen delignification stage, to between the brown stock washer and mixer, to a coarse screen between the digester and the brown stock washer, and/or to a washer for the coarse rejects from the coarse screen). The oxygen delignification stage may include at least two upflow vessels, of different first and second stages, with a mixer before each stage, and at least one of the vessels includes a multiple feeding device. Gas separation can also be practiced in one or all of the oxygen delignification vessels. The screening stage may be provided before or after a washer for washing the oxygen delignified pulp.

摘要翻译： 化学纸浆通过在连续的蒸煮器或间歇式蒸煮器中烹调粉碎的纤维素纤维材料（例如木屑）或生产棕色原料，并且在棕色洗衣机中洗涤棕色原料以产生化学纸浆，使中等稠度的化学纸浆脱木质 ，然后筛选氧脱木素纸浆以产生接受部分和含有屎的废品部分。 现有技术中固有的缺点通过在氧脱木质化之前直接输送（即不进行精炼或辅助氧去木质化）含有废弃物的废料部分至主纤维管线（例如，在氧脱木质阶段的混合器之前） 棕色洗衣机和搅拌机，在蒸煮器和棕色洗衣机之间的粗筛子和/或用于来自粗筛的粗废料的洗衣机）。 氧脱木质阶段可以包括不同的第一和第二阶段的至少两个上流容器，在每个阶段之前具有混合器，并且至少一个容器包括多个进料装置。 气体分离也可以在一个或所有氧脱木质血管中实施。 可以在用于洗涤氧脱木素纸浆的洗衣机之前或之后提供筛选阶段。

公开(公告)号：US06332954B2

公开(公告)日：2001-12-25

申请号：US09734271

申请日：2000-12-11

申请人： Vidar Snekkenes

发明人： Vidar Snekkenes

IPC分类号： D21C706

CPC分类号： D21C1/00 ,  D21C7/06 ,  D21C7/14

摘要： A method in connection with continuous cooking of chips, comprising impregnation of the chips with impregnation liquid in an impregnation vessel (3) and cooking of the impregnated chips in a digester (4), the impregnation vessel and the digester being connected to each other by means of a transfer circulation, which partly, via a feed line (25), feeds the chips from an outlet end (27) of the impregnation vessel to the top of the digester for separation of free liquid in a separator (28), and partly, via a return line (26), feeds separated liquid from the top of the digester to the outlet end of the impregnation vessel for use as transfer liquid for the impregnated chips, besides which cooking liquid is added to the chips in the top of the digester. According to the invention, as a first part, less than 100%, preferably less than 95% and more preferred less than 90% of the liquid which is separated from the chips in the transfer circulation, is recirculated to be used as transfer liquid.

摘要翻译： 一种与芯片的连续烹饪​​有关的方法，包括在浸渍容器（3）中用浸渍液浸渍碎片并在蒸煮器（4）中蒸煮浸渍的碎片，浸渍容器和蒸煮器通过 转移循环装置，其部分通过进料管线（25）将碎屑从浸渍容器的出口端（27）进料到消化器的顶部，以分离分离器（28）中的游离液体;以及 部分地通过返回管线（26）将分离的液体从蒸煮器的顶部输送到浸渍容器的出口端，用作浸渍的切屑的转移液体，除了将蒸煮液体添加到 消化池 根据本发明，作为第一部分，与转移循环中的碎屑分离的液体的小于100％，优选小于95％，更优选小于90％被再循环以用作转移液体。

公开(公告)号：US06267847B1

公开(公告)日：2001-07-31

申请号：US09440225

申请日：1999-11-15

申请人： Klaus Doelle ,  Robert J. Matz

发明人： Klaus Doelle ,  Robert J. Matz

IPC分类号： D21C706

CPC分类号： D21B1/30

摘要： A pulper in a stock preparation system includes a housing with a fiber inlet, at least one water inlet, at least one outlet and an inner chamber. A plurality of stationary pulping foils are attached to the housing and extend into the inner chamber. A rotatable shaft assembly extends through the inner chamber. The shaft assembly includes a shaft, an auger positioned around the shaft and relative to the fiber inlet and a plurality of movable pulping foils carried by and extending from the shaft. A conical valve is positioned in association with the outlet and is selectively movable to open and close the outlet.

摘要翻译： 储备制备系统中的碎浆机包括具有纤维入口，至少一个进水口，至少一个出口和内室的壳体。 多个固定式制浆箔被附接到壳体并延伸到内腔中。 可旋转轴组件延伸穿过内室。 轴组件包括轴，螺旋推运器，其围绕轴定位并且相对于纤维入口，以及多个可移动的制浆箔，其由轴承载并从轴延伸。 锥形阀与出口相关联地定位并且选择性地可移动以打开和关闭出口。

公开(公告)号：US06589391B2

公开(公告)日：2003-07-08

申请号：US09984335

申请日：2001-10-29

申请人： Keith P. Vogel ,  John F. Bolles ,  C. Bertil Stromberg

发明人： Keith P. Vogel ,  John F. Bolles ,  C. Bertil Stromberg

IPC分类号： D21C706

CPC分类号： D21C7/00 ,  D21C7/06 ,  D21C7/14

摘要： A top separator assembly for a digester is disclosed comprising: a rotatable shaft for the top separator; a packing for the shaft; and a sealing ring operatively mounted to the shaft and having a nominal clearance with the pack box, said sealing ring mounted so that up lifting of said shaft provides a substantially fluid tight seal between said pack box and a side of said ring (in the digester) opposite the pack box.