公开(公告)号：US5567262A

公开(公告)日：1996-10-22

申请号：US685400

申请日：1991-04-16

申请人： Joseph Phillips ,  John Weston

发明人： Joseph Phillips ,  John Weston

IPC分类号： D21C9/02 ,  D21C7/00 ,  D21C9/04 ,  D21D1/40

CPC分类号： D21D1/40 ,  D21C7/00 ,  D21C9/04

摘要： A multi-stage pressure diffuser is provided for treating paper pulp or similar comminuted cellulosic fibrous material. Two different subvolumes are defined within the annular screen of the pressure diffuser by a tubular baffle hung from adjacent the top of the vessel, and a transverse wall near the middle of the vessel. Wash liquid is introduced into the top stage, extracted liquid passes through the bottom of the baffle, and is removed through a liquid outlet at the top of the vessel. That removed liquid is then reintroduced into the bottom stage as wash liquid, and the extracted liquid from the bottom stage is discharged from the vessel at the bottom. The screen assembly may be blanked at the area of the transverse wall dividing the subvolumes from each other, in order to minimize the possibility of mixing of the extraction flows in the different stages.

摘要翻译： 提供了用于处理纸浆或类似粉碎的纤维素纤维材料的多级压力扩散器。 两个不同的子体积通过从容器的顶部悬挂的管状挡板和靠近容器中部的横向壁限定在压力扩散器的环形屏幕内。 洗涤液体被引入顶部，提取液体通过挡板的底部，并通过容器顶部的液体出口去除。 然后将去除的液体作为洗涤液重新引入底部，并且从底部的提取液体从底部的容器排出。 屏幕组件可以在分隔子体积的横壁的区域处被冲切，以便最小化在不同阶段中的提取流的混合的可能性。

公开(公告)号：US5027620A

公开(公告)日：1991-07-02

申请号：US488722

申请日：1990-02-26

申请人： Ole J. Richter

发明人： Ole J. Richter

IPC分类号： B01D29/46 ,  B01D29/62 ,  B01D29/66 ,  D21C9/04 ,  D21D5/02

CPC分类号： D21C9/04

摘要： In a paper pulp treating vessel, such as a pulp thickener or diffuser, the screens are backflushed by reciprocating an internal piston utilizing an internally mounted hydraulic cylinder. The screens are supported by conduit arms having a central hub, and the hydraulic cylinder is mounted directly on top of the hub, with the backflushing cylinder mounted below the hub. Hydraulic lines lead from exteriorly of the vessel to the hydraulic cylinder within the vessel, and a sealing conduit is mounted surrounding the hydraulic lines. The sealing conduit extends to a point above the top of the vessel to act as an indicator if hydraulic fluid leaks in the vessel. A flexible bellows is connected between the sealing conduit and the hydraulic cylinder to allow tilting action between the arms and the top of the vessel.

公开(公告)号：US5015333A

公开(公告)日：1991-05-14

申请号：US68721

申请日：1987-06-29

申请人： Ralph S. Grant

发明人： Ralph S. Grant

IPC分类号： D21C9/04

CPC分类号： D21C9/04

摘要： A method for washing pulp in a batch digester modified pulping process wherein black cooking liquor used for cooking the chips is partially displaced by pumping a first stage wash effluent into the bottom of the digester, additional amounts of the cooking liquor are displaced by pumping a second stage wash effluent, and so on, until sufficient increments of wash effluent have been pumped to displace the cooking liquor. A wash filtrate water is then pumped into the digester from a final pulp washing operation to displace the hot black liquor until all of the hot black liquor is sent to an accumulator, and the various wash effluents have been replenished in their respective stages.

摘要翻译： 一种用于在间歇式蒸煮器改性制浆方法中清洗纸浆的方法，其中用于烹饪碎片的黑色蒸煮液通过将第一级洗涤流出物泵送到消化器的底部而被部分置换，另外量的蒸煮液通过泵送第二 阶段洗涤流出物等，直到已经抽出足够的洗涤流出物的增量以置换蒸煮液。 然后将洗涤的滤液水从最终的纸浆清洗操作中泵送到消化器中，以置换热黑液，直到所有的热黑液送到蓄液器中，并且各个洗涤流出物在其各自的阶段被补充。

公开(公告)号：US4908896A

公开(公告)日：1990-03-20

申请号：US233366

申请日：1988-08-18

申请人： Finn Jacobsen ,  Ole J. Richter

发明人： Finn Jacobsen ,  Ole J. Richter

IPC分类号： B01D29/46 ,  B01D29/62 ,  B01D29/66 ,  B01D33/03 ,  B01D33/39 ,  B01D33/48 ,  B01D33/60 ,  B01D33/76 ,  D21C9/02 ,  D21C9/04 ,  D21D1/40 ,  D21D5/02 ,  D21F1/66

CPC分类号： B01D33/0315 ,  D21C9/04 ,  D21D1/40 ,  D21F1/66 ,  B01D33/033 ,  B01D33/39 ,  B01D33/48 ,  B01D33/60 ,  B01D33/763

摘要： A pressure diffuser includes in a liquid-tight pressurized vessel a vertical screen and which screen and vessel wall define first and second interior volumes for transmitting pulp from a pulp inlet to a pulp outlet and receiving displacement (e.g. wash or bleach) liquid transmitted from headers through the pulp. The screen ends have different cross-sectional areas, and quick movement of the screen effects backflushing. The volumes are segregated by a vertical, generally cylindrical, screen. A chamber is provided in communication on opposite sides of a piston therein with the pulp adjacent the pulp inlet and the extracted liquid. By displacing the piston immediately prior to rapidly moving the screen vertically to effect backflushing through the screen, the pulp pressure on the screen is being reduced and at the same time a volume is made available adjacent the pulp inlet in the chamber thus avoiding pressure shocks and compaction of the pulp adjacent the inlet caused by the movement of the screen.

摘要翻译： 压力扩散器包括在液密的加压容器中的垂直筛网，并且筛网和容器壁限定用于将纸浆从纸浆入口传送到纸浆出口的第一和第二内部容积，并且接收从头部传送的位移（例如洗涤或漂白）液体 通过纸浆。 屏幕端部具有不同的横截面积，屏幕的快速移动会反冲洗。 体积由垂直的，通常为圆柱形的屏幕分隔开。 在其中的活塞的相对侧上设置有腔室，其中纸浆与纸浆入口和提取液体相邻。 通过在垂直快速移动屏幕之前立即移动活塞，以通过屏幕反冲洗，屏幕上的纸浆压力减小，同时在室内的纸浆入口附近的体积可用，从而避免压力冲击和 由筛网移动引起的与入口相邻的纸浆的压实。

公开(公告)号：US4840704A

公开(公告)日：1989-06-20

申请号：US170299

申请日：1988-03-21

申请人： George W. Seymour

发明人： George W. Seymour

IPC分类号： D21C9/04

CPC分类号： D21C9/04 ,  Y10S162/10

摘要： Pulp washing efficiency at any given dilution factor and production rate is maximized by controlling washing surface speed in response to determination of total mass of product stream in weight per unit area on the surface and simultaneously controlling the rate of dilution liquid introduction in response to sensing of feed level in the container feeding the surface, thereby to obtain a substantially constant level of pulp in the feed and in the pulp mat formed on the washing surface which is to undergo washing and a substantially constant weight of pulp mat (on a dry pulp basis) per unit area on the washing surface.

摘要翻译： 响应于测定表面上每单位面积重量的产品流的总质量，同时控制稀释液的引入速率，以响应感测的方式，通过控制洗涤表面速度来最大化在任何给定的稀释因子和生产速率下的纸浆洗涤效率 在供给表面的容器中的进料水平，从而获得进料和形成在洗涤表面上的纸浆中基本上恒定的纸浆水平，该洗涤表面将进行洗涤和基本上恒定的纸浆垫重量（在干纸浆基础上 ）在洗涤表面上的每单位面积。

公开(公告)号：US4840047A

公开(公告)日：1989-06-20

申请号：US195670

申请日：1988-05-18

申请人： Johan C. F. C. Richter ,  Ole J. Richter

发明人： Johan C. F. C. Richter ,  Ole J. Richter

IPC分类号： B01D29/11 ,  B01D33/03 ,  B01D33/39 ,  B01D33/48 ,  B01D33/60 ,  B01D33/76 ,  D21C9/04 ,  D21C9/06 ,  D21C9/18 ,  D21F1/66

CPC分类号： D21F1/66 ,  B01D33/0315 ,  D21C9/04 ,  B01D33/033 ,  B01D33/39 ,  B01D33/48 ,  B01D33/60 ,  B01D33/763

摘要： A pressure diffuser for paper pulp includes a vertical pressurizable liquid-tight vessel having a pulp inlet at the bottom and a pulp outlet at the top. One or more ring shaped screen elements providing first and second concentric screen surfaces, are vertically mounted within the vessel. A number of radially extending header arms mount the screen elements for movement in the vessel and in fluid communication with it. A first linear actuator effects reciprocation of the arms. A cylinder, open at both ends, is affixed to the arms and extends both above and below them, and a piston is disposed within the cylinder, below the arms. A second linear actuator is operatively connected to the piston to effect reciprocation of the piston in the cylinder. A guiding conduit surrounds the open end of the cylinder above the arms and guides reciprocation of the cylinder and transports liquid from the arms to an effluent outlet. A perforated jacket surrounding the guiding conduit, nozzles at the vessel wall, and the like introduce liquid into the vessel for treatment of the pulp. The ring shaped screen element is connected to the arms in a manner to allow the best liquid communication between them. In this way pulp can be effectively treated in a pressurized vessel while the screens for treating the pulp are periodically backflushed without causing a surge within the vessel.

摘要翻译： 用于纸浆的压力扩散器包括垂直可加压的液密容器，其在底部具有纸浆入口和顶部的纸浆出口。 提供第一和第二同心筛面的一个或多个环形筛网元件垂直地安装在容器内。 许多径向延伸的头臂安装屏幕元件以在容器中移动并与其流体连通。 第一线性致动器执行臂的往复运动。 在两端敞开的气缸被固定在臂上并在其上方和下方延伸，活塞在气缸内部设置在臂的下方。 第二线性致动器可操作地连接到活塞以实现活塞在气缸中的往复运动。 引导导管将气缸的开口端环绕在臂上方并且引导气缸的往复运动并将液体从臂传送到流出物出口。 围绕引导管的穿孔护套，在血管壁处的喷嘴等将液体引入容器中用于处理纸浆。 环形屏元件以允许它们之间最佳液体连通的方式连接到臂上。 以这种方式，可以在加压容器中有效地处理纸浆，而用于处理纸浆的筛网被周期性地反冲洗而不引起容器内的浪涌。

公开(公告)号：US4780181A

公开(公告)日：1988-10-25

申请号：US81521

申请日：1987-08-03

申请人： Lennart G. Lind

发明人： Lennart G. Lind

IPC分类号： D21C7/14 ,  D21C9/04

CPC分类号： D21C9/04 ,  D21C7/14

摘要： A method in connection with continuous pulp cooking to wash the delignified pulp in a vertical, elongated pressure vessel comprising a cooking zone (1), a main washing zone (3) and a conditioning zone (4) at the bottom of the vessel, where the pulp is further washed and optionally diluted and cooled, said cooking zone being separated from said main washing zone by an interruption zone (2), where diluting/washing liquid displaces the cooking liquor, which is drained via one or several interruption circulation screen girdles (5), while contaminated washing liquid in the conditioning zone is displaced by cleaner washing liquid and is drained via one or several bottom screen girdles (10). At least part of that washing liquid which has been drained through the bottom screen girdle/s/ (10) is passed in counter-current to, but not through, the pulp, i.e. not in contact with the pulp, but through at least one separate counter-current conduit (17) up to at least one intermediate screening stage (14) between the interruption zone and the conditioning zone, where it enters the pulp centrally and spreads outwards to displace contaminated diluting/washing liquid, which is drained through one or several intermediate screen girdles (15).

摘要翻译： 一种连续纸浆蒸煮的方法，用于在垂直细长的压力容器中洗涤脱木素纸浆，该压力容器包括在容器底部的烹饪区（1），主洗涤区（3）和调理区（4），其中 进一步洗涤纸浆并任选地稀释和冷却，所述烹饪区域通过中断区域（2）与所述主洗涤区域分离，其中稀释/洗涤液体移动通过一个或多个中断循环筛网带排出的蒸煮液 （5），而处于调理区域的被污染的洗涤液体被更清洁的清洗液体置换，并通过一个或多个底部筛网带（10）排出。 通过底部屏障腰带/ s /（10）排出的洗涤液的至少一部分通过与纸浆逆流而不通过纸浆，即不与纸浆接触，而是通过至少一个 单独的逆流导管（17），直到中断区域和调节区域之间的至少一个中间筛选阶段（14），其中中心地进入纸浆并向外扩散以置换污染的稀释/洗涤液体，其被排出一个 或几个中间屏幕带（15）。

公开(公告)号：US4564144A

公开(公告)日：1986-01-14

申请号：US575683

申请日：1984-01-31

申请人： Oliver A. Laakso

发明人： Oliver A. Laakso

IPC分类号： B01D29/11 ,  D21C9/04 ,  B05B3/02

CPC分类号： D21C9/04 ,  B01D29/115

摘要： A method and apparatus for effecting washing, bleaching, or thickening, etcetera of paper pulp or the like utilizes stationary screens, yet provides efficient treatment without significant screen clogging. Pulp introduced into the bottom of a cylindrical upright vessel is caused to flow in particular radial segments and channels. Introduction of pulp into all channels of a particular radial segment, extraction of withdrawn liquid from the radial segments, removal of treated pulp from the top of the vessel, and the introduction of treating liquid between the stationary screens, are coordinated so that uniform treatment of the upwardly flowing pulp results.

摘要翻译： 用于实现纸浆等的洗涤，漂白或增稠等的方法和设备利用固定屏幕，但是提供有效的处理而没有显着的屏幕堵塞。 引入到圆柱形直立容器底部的纸浆被引入特定的径向段和通道。 将纸浆引入特定径向段的所有通道中，从径向段抽出抽出的液体，从容器顶部除去处理过的纸浆以及在固定筛网之间引入处理液体，使得均匀处理 向上流动的纸浆结果。

公开(公告)号：US3595038A

公开(公告)日：1971-07-27

申请号：US3595038D

申请日：1968-06-14

申请人： SVENSKA CELLULOSA AB

发明人： BERGHOLM CARL ARNE ,  ANKERSSON PER-ERIK ,  HELLERQVIST GUSTAF RUNE

IPC分类号： D21C9/04

CPC分类号： D21C9/04

摘要： In washing paper pulp or similar fibrous suspension the suspension is moved intermittently vertically through a column. In the dwell periods, washing liquid is forced through the fibrous suspension, and the resulting ''''extract'''' removed, in a generally horizontal direction through perforate screening members forming portions of the column.

公开(公告)号：US3515632A

公开(公告)日：1970-06-02

申请号：US84662769

申请日：1969-07-07

申请人： SVENSKA CELLULOSA AB

发明人： BERGHOLM CARL ARNE

IPC分类号： D21C9/04 ,  D21C9/02

CPC分类号： D21C9/04