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    Bleach Stabilizer Compositions And Methods
    3.
    发明申请
    Bleach Stabilizer Compositions And Methods 审中-公开
    漂白稳定剂组合物和方法

    公开(公告)号：US20140202646A1

    公开(公告)日：2014-07-24

    申请号：US14155388

    申请日：2014-01-15

    申请人： Buckman Laboratories International, Inc.

    发明人： Donald G. Jenkins ,  Amy E. Carter

    IPC分类号： D21C9/10

    CPC分类号： D21C9/1026 ,  D21C9/10 ,  D21C9/1036 ,  D21C9/1042

    摘要： Compositions for and methods of stabilizing bleaching and making paper or paperboard having suitable brightness are provided. A stabilizer composition is provided containing aminocarboxylate, hydroxy acid, and either polyamino acid or iminodisuccinate, or both. The stabilizer composition can have low levels or be free of magnesium, phosphates, and silicates. The present invention also relates to a method of stabilizing the bleaching of pulp at an alkaline pH.

    摘要翻译： 提供了稳定漂白和制造具有合适亮度的纸或纸板的组合物和方法。 提供了含有氨基羧酸盐，羟基酸和聚氨基酸或亚氨基二琥珀酸盐或两者的稳定剂组合物。 稳定剂组合物可以具有低水平或不含镁，磷酸盐和硅酸盐。 本发明还涉及在碱性pH下稳定纸浆漂白的方法。

    Method of bleaching cellulose pulp with a main conduit for wash liquor and filtrate
    4.
    发明授权
    Method of bleaching cellulose pulp with a main conduit for wash liquor and filtrate 有权
    用洗涤液和滤液的主要管道漂白纤维素纸浆的方法

    公开(公告)号：US07374637B2

    公开(公告)日：2008-05-20

    申请号：US11280915

    申请日：2005-11-16

    申请人： Vidar Snekkenes ,  Lennart Gustavsson

    发明人： Vidar Snekkenes ,  Lennart Gustavsson

    IPC分类号： D21C3/22

    CPC分类号： D21C9/1026 ,  D21C9/02 ,  D21C9/144

    摘要： The method is for bleaching cellulose pulp in a bleach line that has at least two bleaching steps. The filtrate distribution is led up through the bleaching line counter-currently to the flow of cellulose pulp established in the bleaching line. A single joint main conduit is used for the bleaching steps. Wash filtrates obtained from the wash steps, used after or before the bleaching step, are led in conduits to branch locations on the main conduit that are positioned downstream of the branch location for drawing off of wash and/or dilution liquor for the wash step in question. All branch points in the joint main conduit are in fluid communication with one another along the main conduit.

    摘要翻译： 该方法是漂白线中漂白纤维素纸浆，该漂白线具有至少两个漂白步骤。 滤液分配通过与漂白线中建立的纤维素浆液流相反的漂白线。 用于漂白步骤的单一接头主导管。 从漂洗步骤之后或之前使用的洗涤步骤获得的洗涤滤液被导入管道中，位于主管道上的位于分支位置下游的分支位置，用于抽出用于洗涤步骤的洗涤和/或稀释液 题。 联合主导管中的所有分支点沿主管道彼此流体连通。

    Method of controlling microorganisms in hydrogen peroxide pulp bleaching processes
    6.
    发明申请
    Method of controlling microorganisms in hydrogen peroxide pulp bleaching processes 审中-公开
    控制过氧化氢纸浆漂白工艺中微生物的方法

    公开(公告)号：US20040200588A1

    公开(公告)日：2004-10-14

    申请号：US10410753

    申请日：2003-04-10

    发明人： Jayne M.A. Walker

    IPC分类号： D21C003/20 ,  D21C009/16 ,  D21H025/02 ,  D21H011/20

    CPC分类号： D21C9/16 ,  D21C9/1026 ,  D21C9/1042 ,  D21C9/166

    摘要： A method of controlling micro-organisms during peroxide bleaching of cellulose pulp comprising adding to the pulp an effective micro-organism controlling amount of a) an aqueous biocide solution comprising one or more organic peracids; and b) an aqueous solution comprising one or more chelating agents.

    摘要翻译： 一种在纤维素纸浆的过氧化物漂白期间控制微生物的方法，包括向纸浆中加入有效的微生物控制量的a）含有一种或多种有机过酸的杀生物剂水溶液; 和b）包含一种或多种螯合剂的水溶液。

    METHOD OF TREATING CHEMICAL CELLULOSE PULP
    7.
    发明申请
    METHOD OF TREATING CHEMICAL CELLULOSE PULP 无效
    处理化学纤维素浆的方法

    公开(公告)号：US20020056533A1

    公开(公告)日：2002-05-16

    申请号：US09262912

    申请日：1999-03-05

    发明人： TAPANI VUORINEN ,  SARI JUUTILAINEN ,  AKI VILPPONEN

    IPC分类号： D21C009/14

    CPC分类号： D21C9/1026 ,  D21C9/14

    摘要： A method of bleaching chemical cellulose pulp from an alkaline (e.g. kraft) pulping process in a chlorine dioxide stage includes (without between step washing) bleaching the pulp in a first chlorine dioxide step, and adjusting the pH of the pulp in the first chlorine dioxide step so that the final pH of the step is over 4; and then (b) effecting acid treatment of the chemical cellulose pulp at a pH of between 2-5 (preferably 2.5-4) and a temperature of over 80null C. (preferably between about 90-110null C.). The temperature in the first chlorine dioxide stage is preferably over 75null C., e.g. between about 80-100null C., and for a time of less than ten minutes, with a chlorine dioxide dosage of between about 0.5-1.5% active chlorine. Preferably a second chlorine dioxide step is practiced after the acid treatment, preferably at substantially the same conditions as the first chlorine dioxide step. The method minimizes the consumption of chlorine dioxide to bleach to a particular kappa number, minimizes the amount of equipment, enhances energy economy of the chlorine dioxide bleaching process, and minimizes the discharge of malodorous gases since they are oxidized by the first chlorine dioxide step.

    摘要翻译： 从二氧化氯阶段的碱性（例如牛皮纸）制浆工艺漂白化学纤维素纸浆的方法包括（不进行步骤洗涤）在第一二氧化氯步骤中漂白纸浆并调节第一二氧化氯中的纸浆的pH值 使步骤的最终pH超过4; 然后（b）在2-5（优选2.5-4）和超过80℃（优选约90-110℃）的温度下对化学纤维素纸浆进行酸处理。 第一二氧化氯阶段的温度优选超过75℃，例如 在约80-100℃之间和少于10分钟的时间内，二氧化氯剂量为约0.5-1.5％的活性氯。 优选地，在酸处理之后，优选在与第一二氧化氯步骤基本相同的条件下实施第二二氧化氯步骤。 该方法将二氧化氯的消耗量最小化漂白至特定的卡伯值，使设备的量最小化，提高二氧化氯漂白过程的能量经济性，并且由于它们被第一二氧化氯步骤氧化，使恶臭气体的排放最小化。

    Method of bleaching high yield pulp by using dithionite ion and excluding oxygen
    9.
    发明授权
    Method of bleaching high yield pulp by using dithionite ion and excluding oxygen 失效
    通过使用连二亚硫酸盐离子并排除氧来漂白高产量纸浆的方法

    公开(公告)号：US4863564A

    公开(公告)日：1989-09-05

    申请号：US136975

    申请日：1987-12-23

    申请人： S. Allen Grimsley ,  James C. Robinson ,  Mark A. Schroeder

    发明人： S. Allen Grimsley ,  James C. Robinson ,  Mark A. Schroeder

    IPC分类号： D21C9/10

    CPC分类号： D21C9/1089 ,  D21C9/1026

    摘要： A method is described for increasing the brightness of reductively bleached high yield pulps, comprising bleaching the pulps with a reductive bleaching solution under anaerobic conditions and maintaining the bleached pulps under anaerobic conditions during all handling steps subsequent to bleaching, including paper formation, wet pressing, and drying of the paper formed therefrom. The bleached paper has higher brightness than the same paper produced under aerobic conditions, and the bleaching and handling-derived portion of this higher brightness is retained after storage of the finished paper.

    摘要翻译： 描述了一种用于增加还原性漂白的高产量纸浆的亮度的方法，包括在厌氧条件下用还原性漂白溶液漂洗纸浆并在漂白之后的所有处理步骤期间将漂白纸浆保持在厌氧条件下，包括造纸，湿压， 并干燥由其形成的纸。 漂白纸具有比在有氧条件下生产的相同纸张更高的亮度，并且在保存成品纸之后保持这种较高亮度的漂白和处理衍生部分。

    Process for chlorine bleaching of kraft pulp using a sulfite extraction stage
    10.
    发明授权
    Process for chlorine bleaching of kraft pulp using a sulfite extraction stage 失效
    使用亚硫酸盐萃取阶段氯化牛皮纸浆漂白工艺

    公开(公告)号：US4579628A

    公开(公告)日：1986-04-01

    申请号：US734251

    申请日：1985-05-14

    申请人： Jean J. Renard ,  Shyam S. Bhattacharjee

    发明人： Jean J. Renard ,  Shyam S. Bhattacharjee

    IPC分类号： D21C9/10 ,  D21C9/14 ,  D21C9/12

    CPC分类号： D21C9/1026 ,  D21C9/14

    摘要： Extraction of chlorine bleached kraft wood pulps with aqueous peracids at pH values of 7 or below, aqueous sulfites at pH values below 10 or with certain non-aqueous solvents provides extracted pulps having lower residual color and permits use of lesser quantities of alkali or chlorine dioxide in subsequent bleach steps to attain brightness and strength levels comparable to those attained with pulps treated by alkaline extraction at pH values of 10 or higher. At a comparable level of alkali and chlorine dioxide or hypochlorite application, extraction of chlorinated pulp with peracids provides bleached pulps with enhanced brightness.

    摘要翻译： 在pH值为7或更低的pH值为7或以下的含水过酸酸提取氯漂白牛皮纸木浆，pH值低于10的亚硫酸钠或某些非水溶剂提取具有较低残留颜色的提取纸浆，并允许使用较少量的碱或二氧化氯 在随后的漂白步骤中获得与通过在pH值为10或更高的碱提取处理的纸浆达到的亮度和强度水平相当的漂白步骤。 在碱和二氧化氯或次氯酸盐的可比水平下，用过酸萃取氯化纸浆提供了增强的亮度的漂白纸浆。