公开(公告)号：US06261413B1

公开(公告)日：2001-07-17

申请号：US08832770

申请日：1997-04-03

申请人： Manfred Dietmar Hepp

发明人： Manfred Dietmar Hepp

IPC分类号： D21C326

CPC分类号： D21C3/224 ,  D21C3/22 ,  D21C7/06

摘要： The present invention relates to a process for continuously guiding a liquid when digesting pulp in a digester, wherein liquid used in a process step can circulate between containers or tanks arranged at the inflow and outflow side of the digester and when this particular process step has been reached, the digester is connected into the circulation between the containers or tanks associated with the process step.

摘要翻译： 本发明涉及一种在消化器中消化纸浆时连续引导液体的方法，其中在工艺步骤中使用的液体可以在设置在消化器的流出和流出侧的容器或罐之间循环，并且当该特定工艺步骤已经 达到，蒸煮器连接到与工艺步骤相关联的容器或罐之间的循环中。

公开(公告)号：US06454900B2

公开(公告)日：2002-09-24

申请号：US09886913

申请日：2001-06-21

申请人： Monica Bokström ,  Pia Mellander ,  Solveig Nordén

发明人： Monica Bokström ,  Pia Mellander ,  Solveig Nordén

IPC分类号： D21C326

CPC分类号： D21C9/147

摘要： Methods for oxygen delignification of a pulp are disclosed, including initially delignifying the pulp at a delignification temperature of less than 90° C., adding oxygen to the pulp so that the oxygen is present during the initial delignification step, and further delignifying the pulp at a delignification temperature of greater than 90° C., the difference between the two delignification temperatures being less than about 20° C., and the pressure being greater in the initial delignification step. The method also includes adding alkali solely to the initial delignification step in order to obtain high alkalinity therein.

摘要翻译： 公开了一种纸浆氧脱木质的方法，包括首先在低于90℃的脱木质素温度下脱木质纤维，向纸浆中加入氧，使得在初始脱木质步骤期间存在氧，并进一步脱木素 脱木素温度大于90℃，两个脱木质素温度之间的差异小于约20℃，并且初始脱木质步骤中的压力较大。 该方法还包括仅在初始脱木素步骤中加入碱以获得其中的高碱度。

公开(公告)号：US06350348B1

公开(公告)日：2002-02-26

申请号：US09341843

申请日：1999-07-19

申请人： Kaj Henricson ,  Auvo Kettunen ,  Hannu Ramark

发明人： Kaj Henricson ,  Auvo Kettunen ,  Hannu Ramark

IPC分类号： D21C326

CPC分类号： D21C1/06 ,  D21C3/02 ,  D21C3/266

摘要： A method of cooking pulp in an alkaline batch process (using one or more batch digesters) improves pulp bleachability. The wood material is supplied to the digester; the cellulosic material is pre-treated in the digester with a first liquor, the first liquor is displaced by a second liquor, the displaced first liquor is led to a further treatment, the cellulose material is treated with the second liquor, and the cooked pulp is removed from the digester. The second liquor is displaced as two consecutive parts, i.e. as strong black liquor and weak black liquor, and after cooling in a heat exchanger the strong black liquor thus obtained is fed into the digester as the first liquor in a subsequent batch (in the same, or a different, batch digester).

摘要翻译： 在碱性间歇法（使用一个或多个间歇式蒸煮器）中烹饪纸浆的方法提高纸浆的可漂白性。 将木材供应给蒸煮器; 纤维素材料在蒸煮器中用第一液体预处理，第一液体被第二液体置换，将置换的第一液体进一步处理，将纤维素材料用第二液体处理，并将煮熟的纸浆 从蒸煮器中取出。 第二液体作为两个连续的部分排出，即作为强黑液和弱黑液，并且在热交换器中冷却之后，将如此获得的强黑液作为后续批次中的第一液体加入到蒸煮器中 ，或不同的批量蒸煮器）。

公开(公告)号：US06719878B1

公开(公告)日：2004-04-13

申请号：US09926578

申请日：2002-02-26

申请人： Mikael Svedman

发明人： Mikael Svedman

IPC分类号： D21C326

CPC分类号： D21C9/147 ,  D21C3/22 ,  D21C7/08 ,  D21C9/007

摘要： A method for producing chemical pulp from cellulosic material by means of alkaline cooking, including cooking the material to pulp at cooking temperature in a digester, reducing the temperature at the end of the cook, substantially relieving the overpressure in the digester and then discharging the pulp from the digester by means of pumping. The method is characterized in that the pulp is cooled to essentially 85° C. to 70° C. before pumping cooked material as a fluid suspension from the digester, and that the temperature of the cooked material is maintained in the same temperature range and at a pH level being between 10 and 13, between the digester and a first delignification/bleaching stage, thus avoiding mechanical damage of cellulosic material.

摘要翻译： 一种通过碱性烹饪从纤维素材料生产化学纸浆的方法，包括在蒸煮器的烹饪温度下将材料烹饪至纸浆，降低烹饪结束时的温度，基本上减轻了蒸煮器中的超压，然后排出纸浆 从消化器通过抽水。 该方法的特征在于，在将煮熟的材料作为来自蒸煮器的流体悬浮液进行抽取之前，将纸浆冷却至基本上为85℃至70℃，并且将煮熟的材料的温度保持在相同的温度范围内 蒸煮器和第一脱木素/漂白阶段之间的pH值在10和13之间，从而避免纤维素材料的机械损伤。

公开(公告)号：US06582554B1

公开(公告)日：2003-06-24

申请号：US10142944

申请日：2002-05-13

申请人： Kaj O. Henricson ,  C. Bertil Stromberg ,  Richard Laakso ,  John F. Bolles ,  Keith P. Vogel ,  Patrick J. Sullivan

发明人： Kaj O. Henricson ,  C. Bertil Stromberg ,  Richard Laakso ,  John F. Bolles ,  Keith P. Vogel ,  Patrick J. Sullivan

IPC分类号： D21C326

CPC分类号： D21C3/22 ,  D21C7/14

摘要： A method is disclosed for extracting liquor from a cellulose slurry for a continuous digester comprising the steps of: providing the cellulose slurry of liquor and chips of cellulose fiber material to a separator; extracting a first stream of liquor from the separator; extracting a second stream of liquor from the separator, where the second stream has an effective alkali (EA) concentration greater than the EA concentration of the first steam; outputting the first stream from the separator and outputting the second stream from the separator separately from the second stream, and outputting a condensed slurry from the separator to a digester vessel.

公开(公告)号：US06179958B2

公开(公告)日：2001-01-30

申请号：US09117593

申请日：1998-07-29

申请人： Claes Göran Lys{acute over (e)}n ,  Torbjörn Ulf Olsson ,  Gunnar Carl Wernqvist

发明人： Claes Göran Lys{acute over (e)}n ,  Torbjörn Ulf Olsson ,  Gunnar Carl Wernqvist

IPC分类号： D21C326

CPC分类号： D21C1/02 ,  D21C3/22 ,  D21C3/24

摘要： A method for cooking chips, involving steaming the chips, impregnating the chips with impregnating liquid in an impregnation vessel, which impregnating liquid comprises fresh cooking liquid and spent liquor, extracting spent liquor from the impregnation vessel, cooking the impregnated chips in cooking zones including an introductory co-current cooking zone and a concluding counter-current cooking zone, extracting spent liquor from the digester at a position between the said co-current and counter-current cooking zones, transferring the said spent liquor from the digester to at least one position upstream of the digester, circulating the cooking liquid in a bottom circulation within the said counter-current cooking zone, heating the circulating cooking liquid by means of heat exchange, and supplying wash liquid to the bottom of the digester. According to the invention, at least some of the digester extract, before being transferred to the said position upstream of the digester, undergoes heat exchange with at least some of the cooking liquid in the said bottom circulation.

摘要翻译： 一种用于烹饪芯片的方法，包括蒸煮芯片，用浸渍液浸渍在浸渍容器中的浸渍液体，该浸渍液体包括新鲜的烹调液和废液，从浸渍容器中提取废液，在包括 介绍性同时烹饪区域和结束的逆流烹饪区域，在所述并流逆流烹饪区域之间的位置处从消化器抽取废液，将所述废液从消化器转移到至少一个位置 在蒸煮器的上游，使烹饪液体循环在所述逆流烹饪区域内的底部循环中，通过热交换加热循环烹饪液体，并将洗涤液体供应到蒸煮器的底部。 根据本发明，至少一些蒸煮器提取物在被转移到蒸煮器上游的所述位置之前，与所述底部循环中的至少一些烹饪液体进行热交换。

公开(公告)号：US06673201B2

公开(公告)日：2004-01-06

申请号：US10290272

申请日：2002-11-08

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： 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。

公开(公告)号：US06241851B1

公开(公告)日：2001-06-05

申请号：US09248009

申请日：1999-02-10

申请人： Bruno S. Marcoccia

发明人： Bruno S. Marcoccia

IPC分类号： D21C326

CPC分类号： D21C3/022 ,  D21C1/00 ,  D21C3/222 ,  D21C3/24 ,  D21C7/00

摘要： Chemical cellulose pulp (e.g. kraft pulp) is produced with enhanced strength and/or yield using a strength or yield enhancing additive such as polysulfide or anthraquinone or its equivalents or derivatives, and in a manner that allows effective recovery/reuse of the additive so as to make the process more economical. In a continuous digester a low temperature and relatively low alkalinity protecting zone is provided at the top of the digester terminating with a first screen, and a second screen is provided below the first screen. Between the first and second screens, prior to bulk delignification, a first counter-current zone is provided, and additive-containing liquid from the first screen is recirculated to the slurry at or near the digester inlet to enhance yield or strength.

摘要翻译： 化学纤维素纸浆（例如牛皮纸浆）使用强度或收率增强添加剂如多硫化物或蒽醌或其等同物或衍生物以增强的强度和/或收率产生，并且以允许有效回收/再利用添加剂的方式 使过程更加经济。 在连续蒸煮器中，在第一筛网终止的消化器的顶部设置低温和相对低的碱度保护区，并且在第一筛网下方设置第二筛网。 在第一和第二筛网之间，在松散脱木质素之前，提供第一逆流区域，并且来自第一筛网的含添加剂的液体在蒸煮器入口处或附近再循环到浆料中以提高产量或强度。

公开(公告)号：US06228213B1

公开(公告)日：2001-05-08

申请号：US09154376

申请日：1998-09-16

申请人： Milford Hanna ,  Gerald Biby ,  Vesselin Miladinov

发明人： Milford Hanna ,  Gerald Biby ,  Vesselin Miladinov

IPC分类号： D21C326

CPC分类号： C08H8/00 ,  C08B15/02

摘要： This process involves feeding cellulose into an extruder with an acid solution. The extruder is comprised of a screw and a barrel. The screw is rotated so as to pressurize the cellulose, and the cellulose undergoes acid hydrolysis and forms microcrystalline cellulose. The invented process can be accomplished by using pure cellulose or a lignocellulosic material as the starting material. If a lignocellulosic material is used, then a basic solution is added to it and the lignocellulosic material is fed through an extruder so as to obtain a mixture comprising lignin, hemicellulose and cellulose. The lignin and hemicellulose are extracted and the remaining cellulose is processed, as discussed previously, to form microcrystalline cellulose.

摘要翻译： 该方法包括用酸溶液将纤维素加入到挤出机中。 挤出机由螺杆和筒组成。 旋转螺杆以对纤维素加压，并且纤维素经历酸水解并形成微晶纤维素。 本发明的方法可以通过使用纯纤维素或木质纤维素材料作为原料来实现。 如果使用木质纤维素材料，则向其中加入碱性溶液，并将木质纤维素材料通过挤出机进料，以获得包含木质素，半纤维素和纤维素的混合物。 提取木质素和半纤维素，如前所述处理剩余的纤维素以形成微晶纤维素。

公开(公告)号：US06221206B1

公开(公告)日：2001-04-24

申请号：US08927925

申请日：1997-09-11

申请人： Monica Bokström ,  Pia Mellander ,  Solveig Nordén

发明人： Monica Bokström ,  Pia Mellander ,  Solveig Nordén

IPC分类号： D21C326

CPC分类号： D21C9/147

摘要： Methods for oxygen delignification of a pulp are disclosed, including initially delignifying the pulp at a delignification temperature of less than 90° C., adding oxygen to the pulp so that the oxygen is present during the initial delignification step, and further delignifying the pulp at a delignification temperature of greater than 90° C., the difference between the two delignification temperatures being less than about 20° C., and the pressure being greater in the initial delignification step. The method also includes adding alkali solely to the initial delignification step in order to obtain high alkalinity therein.

摘要翻译： 公开了一种纸浆氧脱木质的方法，包括首先在低于90℃的脱木质素温度下脱木质纤维，向纸浆中加入氧，使得在初始脱木质步骤期间存在氧，并进一步脱木素 脱木素温度大于90℃，两个脱木质素温度之间的差异小于约20℃，并且初始脱木质步骤中的压力较大。 该方法还包括仅在初始脱木素步骤中加入碱以获得其中的高碱度。