Cellulose slurry treating systems for adding AQ to a cellulose slurry in the substantial absence of alkali
    21.
    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。

    Feeding cellulose material to a treatment vessel
    22.
    发明授权
    Feeding cellulose material to a treatment vessel 有权
    将纤维素材料送入处理容器

    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

    CPC分类号: D21C7/08 D21C7/06

    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。

    Simplified liquid removal system for a cellulose pulp digester
    23.
    发明授权
    Simplified liquid removal system for a cellulose pulp digester 失效
    用于纤维素纸浆蒸煮器的简化液体去除系统

    公开(公告)号:US6120647A

    公开(公告)日:2000-09-19

    申请号:US13040

    申请日:1998-01-26

    IPC分类号: D21C7/00 D21C7/14

    CPC分类号: D21C7/14

    摘要: A vertical pulp treatment vessel having a top and bottom, such as a continuous or batch digester, has at least a first substantially annular screen assembly disposed within the vessel between the top and bottom. A first substantially annular header is associated with the first screen assembly and first and second withdrawal conduits extend outwardly from the header and are in fluid communication with it. A barrier, such as a radially extending plate, is disposed in the header between the withdrawal conduits, the withdrawal conduits being adjacent each other (typically spaced from each other between about 2-30.degree., e.g. between about 10-20.degree.). A small, compared to the prior art, platform is provided for allowing access to the withdrawal conduits, and automatically controlled valves or like structures in or associated with the conduits, the platform having an arcuate extent of less than 180.degree., typically less than about 110.degree. (e.g. about 90.degree. or less). Typically, a second annular screen assembly, like the first screen assembly, with third and fourth withdrawal conduits circumferentially spaced from each other between about 2-30.degree., and have a centerline that is circumferentially spaced from the first and second withdrawal conduit centerline less than about 110.degree. (e.g. about 80-110.degree., typically about 90.degree.), so that on the single platform the four withdrawal conduits, and the automatically operated valves associated therewith, may be accessed.

    摘要翻译: 具有顶部和底部(例如连续或间歇式蒸煮器)的立式纸浆处理容器至少具有在顶部和底部之间的容器内设置的至少第一基本上环形的筛网组件。 第一基本上环形的头部与第一筛网组件相关联,并且第一和第二退出导管从集管向外延伸并与其流体连通。 诸如径向延伸的板之间的屏障设置在取出导管之间的集管中,提取导管彼此相邻(通常彼此间隔约2-30°,例如约10-20度)。 与现有技术相比,一个小的平台被提供用于允许进入取出管道,以及在管道中或与管道相关联的自动控制的阀门或类似结构,该平台具有小于180度的弓形程度,通常小于约 110°(例如约90°以下)。 通常,第二环形筛组件,如第一筛网组件,具有在约2-30°之间彼此周向间隔开的第三和第四退回管道,并且具有与第一和第二抽取管道中心线周向间隔开的中心线小于 约110°(例如约80-110°,通常约90°),从而在单个平台上可以访问四个提取导管以及与其相关的自动操作的阀。

    Treatment vessel for straw or other light bulky material
    26.
    发明授权
    Treatment vessel for straw or other light bulky material 有权
    用于秸秆或其他轻质材料的处理容器

    公开(公告)号:US07988822B2

    公开(公告)日:2011-08-02

    申请号:US12206365

    申请日:2008-09-08

    IPC分类号: D21C5/00 D21C7/00

    CPC分类号: D21C7/00 D21C3/22

    摘要: A method to chemically treat light weight, bulky cellulosic material including: introducing the material to an upper inlet of a substantially vertical treatment vessel; maintaining the material in the vessel at a pressure of at least 20 bar and at a temperature of at least 200° C.; treating the material with a cooking liquor in the vessel; moving the material past at least one anti-compression ring on an inside surface of the vessel, as the material moves downward through the vessel; agitating the material in the vessel, and discharging the treated material from a lower discharge port of the vessel.

    摘要翻译: 一种化学处理重量轻的纤维素材料的方法,包括:将材料引入基本垂直的处理容器的上部入口; 将容器中的材料在至少20巴的压力和至少200℃的温度下保持; 用容器中的烹饪液处理材料; 当材料向下移动通过容器时,将材料移动到容器内表面上的至少一个抗压环; 搅动容器中的材料,并将处理过的材料从容器的下排出口排出。

    Feeding comminuted fibrous material using high pressure screw and centrifugal pumps
    29.
    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

    IPC分类号: D21C1/10 D21C7/06 D21C7/00

    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 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。

    Top separator with intraseal for digester vessel in a pulp or fiber processing system
    30.
    发明授权
    Top separator with intraseal for digester vessel in a pulp or fiber processing system 失效
    在纸浆或纤维加工系统中用于蒸煮器容器的顶部分离器

    公开(公告)号:US06673201B2

    公开(公告)日:2004-01-06

    申请号:US10290272

    申请日:2002-11-08

    IPC分类号: D21C326

    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.

    摘要翻译: 公开了一种用于蒸煮器的顶部分离器组件,包括:用于顶部分离器的可旋转轴; 轴的包装; 以及密封环,其可操作地安装到所述轴上并且具有与所述包装箱的公称间隙,所述密封环安装成使得所述轴的提升在所述包装箱和所述环的一侧(在所述消化器中)之间提供基本上流体密封的密封 )与包装盒相对。