公开(公告)号：US20080066878A1

公开(公告)日：2008-03-20

申请号：US11810117

申请日：2007-06-04

Applicant: Xuan Nguyen

Inventor： Xuan Nguyen

IPC: D21C9/16

CPC classification number: D21C9/1036 ,  D21C9/163

Abstract: A process for bleaching mechanical wood pulp is provided comprising subjecting the wood pulp to at least one bleaching stage with one or more bleaching agents in the presence of one or more optical brightening agent, wherein the bleaching agents are selected from the group consisting of oxidative bleaching agents other than chlorine based bleaching agents such as chlorine dioxide, elemental chlorine or a combination thereof, reductive bleaching agents or any combination of two or more thereof.

Abstract translation: 提供了一种用于漂白机械木浆的方法，包括在一种或多种荧光增白剂的存在下，将木浆与一种或多种漂白剂进行至少一个漂白阶段，其中漂白剂选自氧化漂白 除了基于氯的漂白剂如二氧化氯，元素氯或其组合之外的试剂，还原性漂白剂或其两种或多种的任何组合。

公开(公告)号：US07001484B2

公开(公告)日：2006-02-21

申请号：US10251888

申请日：2002-09-23

Applicant: Yonghao Ni ,  Zhiqing Li

Inventor： Yonghao Ni ,  Zhiqing Li

IPC: D23C9/16

CPC classification number: D21C9/163 ,  D21C9/1036 ,  D21C9/1042 ,  D21C9/1084

Abstract: A process for peroxide bleaching of mechanical or high yield pulp, the process comprising adding to a pulp slurry at least one stabilizer for stabilizing low valency states of transition metal ions in the slurry; subsequently adding caustic soda to said slurry simultaneously with or subsequent to adding said at least one stabilizer; adding hydrogen peroxide to the slurry at a preselected point; and subjecting the slurry to preselected conditions to complete the bleaching process.

Abstract translation: 一种用于机械或高产量纸浆的过氧化物漂白的方法，该方法包括向纸浆中加入至少一种用于稳定浆料中过渡金属离子的低价态的稳定剂; 随后在添加所述至少一种稳定剂的同时或之后向所述浆料中加入苛性钠; 在预选点向浆液中加入过氧化氢; 并对浆料进行预选的条件以完成漂白过程。

公开(公告)号：US20050061455A1

公开(公告)日：2005-03-24

申请号：US10668387

申请日：2003-09-23

Applicant: Zheng Tan ,  Xuan Nguyen ,  Karen Maurer

Inventor： Zheng Tan ,  Xuan Nguyen ,  Karen Maurer

IPC: D21B1/16 ,  D21C9/00 ,  D21C9/10 ,  D21C9/16

CPC classification number: D21C9/007 ,  D21B1/16 ,  D21C3/006 ,  D21C3/02 ,  D21C9/002 ,  D21C9/004 ,  D21C9/1036 ,  D21C9/163 ,  Y10T428/298

Abstract: A method for alteration of the morphology of cellulose fibers, particularly softwood fibers, by (a) subjecting the fibers to a metal ion-activated peroxide treatment carried out at a pH of between about 1 and about 9, preferably between 3 and 7, and (b) subjecting the treated fibers to a refining treatment thereby converts SW fibers to HW-like fibers in many respects. The metal ion-activated peroxide treatment has been noted to act on pulp cellulose and hemi-cellulose, causing oxidation and oxidative degradation of cellulose fibers. The chemical treatment of the pulp, taken alone, is not sufficient to attain the desired modification of the morphology of the fibers, however, subsequent refining or like mechanical treatment of the chemically-treated fibers to achieve a given degree of refinement of the fibers requires dramatically less refining energy to achieve a desired end point of refinement and to impart other desirable properties to the pulp. A pulp of modified SW fibers and a mixture of HW fibers and modified HW fibers are disclosed.

Abstract translation: 通过（a）使纤维进行在约1至约9，优选3至7之间的pH下进行的金属离子活化的过氧化物处理，改变纤维素纤维，特别是软木纤维的形态的方法，以及 （b）经处理的纤维进行精制处理，从而在许多方面将SW纤维转化成HW样纤维。 已经注意到金属离子活化的过氧化物处理作用于纸浆纤维素和半纤维素，引起纤维素纤维的氧化和氧化降解。 单独使用纸浆的化学处理不足以达到对纤维形态的所需改性，然而，随后的精炼或类似机械处理化学处理的纤维以达到纤维的一定程度的细化需要 显着减少精炼能量以实现期望的精制终点并赋予纸浆其它所需特性。 公开了改性SW纤维的纸浆和HW纤维和改性的HW纤维的混合物。

公开(公告)号：US06746568B1

公开(公告)日：2004-06-08

申请号：US09662801

申请日：2000-09-15

Applicant: Hans Terelius ,  Anette Olsson ,  Margareta Nilsson ,  Jessica Svensson ,  Christos Rampotas

Inventor： Hans Terelius ,  Anette Olsson ,  Margareta Nilsson ,  Jessica Svensson ,  Christos Rampotas

IPC: D21C902

CPC classification number: D21C9/1036 ,  D21C9/163 ,  D21C11/0028 ,  D21C11/0085

Abstract: A method in bleaching of pulp is described, in which the pulp is subjected to a peroxide bleaching step, whereupon the pulp is washed and the washing liquid from the washing is separated from the pulp in the form of a filtrate. The method is characterised in that the filtrate is treated with an aluminium compound, such as aluminium sulphate or polyaluminium sulphate, for precipitation of interfering substances, such as oxygen-demanding organic material and metals, that the precipitated material is removed from the filtrate, that the aluminium content of the filtrate after precipitation of interfering substances is adjusted to at most 20 ppm, and that the filtrate is then recirculated to the peroxide bleaching step. By the method, a reduced consumption of hydrogen peroxide in the peroxide bleaching step is achieved.

Abstract translation: 描述了纸浆漂白方法，其中对纸浆进行过氧化物漂白步骤，然后清洗纸浆，将洗涤液中的洗涤液与纸浆以滤液的形式分离。 该方法的特征在于用铝化合物如硫酸铝或聚硫酸铝处理滤液，用于沉淀出需要有机物质和金属的干扰物质，使沉淀物从滤液中除去， 将干燥物质沉淀后的滤液的铝含量调节至至多20ppm，然后将滤液再循环至过氧化物漂白步骤。 通过该方法，可以实现过氧化氢漂白工序中的过氧化氢消耗量的降低。

公开(公告)号：US20030168190A1

公开(公告)日：2003-09-11

申请号：US10240685

申请日：2003-03-26

Inventor： Petri Juhana Jokinen ,  Jarmo Tapio Kahala ,  Hannu Sakari Sonni

IPC: D21C009/02 ,  D21C009/14 ,  D21C009/147

CPC classification number: D21C9/1036

Abstract: The invention relates to a process for the bleaching of an aqueous lignocellulosic pulp under acidic conditions in the bleaching plant of a pulp mill. The bleached pulp is used for the production of paper or pulp. The selectivity of the bleaching agent towards primary reactions with lignin is enhanced by the use of a carbon dioxide providing medium in the pulp.

Abstract translation: 本发明涉及在纸浆厂的漂白设备中在酸性条件下漂白木质纤维素水性纸浆的方法。 漂白纸浆用于生产纸张或纸浆。 通过在纸浆中使用提供二氧化碳的介质，增强漂白剂对木质素初级反应的选择性。

公开(公告)号：US20030089472A1

公开(公告)日：2003-05-15

申请号：US10027164

申请日：2001-12-20

Inventor： Huai N. Cheng ,  Simon Delagrave ,  Qu-Ming Gu ,  Daniel Michalopoulos ,  Dennis J. Murphy

IPC: D21C003/20 ,  D21H025/02

CPC classification number: D21C9/1036 ,  C12N9/96

Abstract: A composition comprising an enzyme exhibiting laccase activity and an enzyme enhancing agent, also referred to as a mediator, is disclosed. A process for oxidizing a substrate that comprises treating the substrate with a composition comprising an enzyme exhibiting laccase activity and an enzyme enhancing agent is disclosed. The process when used on lignin-containing material bleaches the lignin-containing material. A process for enhancing the activity of an enzyme exhibiting laccase activity that comprises adding an enzyme enhancing agent to the enzyme is also disclosed.

Abstract translation: 公开了一种组合物，其包含显示漆酶活性的酶和酶增强剂，也称为介体。 公开了一种用于氧化底物的方法，其包括用包含显示漆酶活性的酶和酶增强剂的组合物处理底物。 当用于含木质素的材料漂白含木质素材料时的过程。 还公开了增加显示漆酶活性的酶的活性的方法，其包括向酶中加入酶增强剂。

公开(公告)号：US20020066541A1

公开(公告)日：2002-06-06

申请号：US09878125

申请日：2001-06-08

Applicant: LONZA INC.

Inventor： Bill Ney ,  Richard Sinden ,  Philip Gerdon Sweeny ,  Patrick Jay Lutz ,  Olga Borokhov

IPC: D21C009/16

CPC classification number: D21C9/163 ,  D21C9/1036

Abstract: The present invention is a method of stabilizing hydrogen peroxide in an aqueous solution, such as a circulating water slurry, comprising a peroxide, such as hydrogen peroxide. The aqueous solution may include organic matter. The method comprises adding an aldehyde donor, such as a methylolhydantoin, to the solution (or slurry). The inventors have discovered that aldehyde donors significantly reduce the decomposition of hydrogen peroxide by catalase and other peroxide decomposing enzymes, which are often present in recycled paper. As a result, less hydrogen peroxide needs to be added to a solution to effectively bleach organic matter in the solution. Furthermore, aldehyde donors are safe to handle and cost effective. Another embodiment is a method of bleaching recycled papers in a circulating water slurry comprising organic matter. The method comprises adding hydrogen peroxide and an aldehyde donor to the slurry. Yet another embodiment is a method of inhibiting catalase and/or other peroxide decomposing enzymes in an aqueous solution, such as a circulating water slurry, comprising adding an aldehyde donor to the aqueous solution.

Abstract translation: 本发明是一种在过氧化氢如过氧化氢等水溶液例如循环水淤浆中稳定过氧化氢的方法。 水溶液可以包括有机物质。 该方法包括向溶液（或浆液）中加入醛供体，例如羟甲基乙内酰脲。 发明人已经发现，醛供体通过过氧化氢酶和其它过氧化物分解酶显着降低过氧化氢的分解，这些酶通常存在于再生纸中。 因此，需要将较少的过氧化氢加入到溶液中以有效地漂白溶液中的有机物质。 此外，醛供体可以安全处理和具有成本效益。 另一个实施方案是在包含有机物质的循环水浆液中漂白再循环纸的方法。 该方法包括向浆液中加入过氧化氢和醛供体。 另一个实施方案是在水溶液如循环水浆液中抑制过氧化氢酶和/或其它过氧化物分解酶的方法，包括向所述水溶液中加入醛供体。

公开(公告)号：US20010018956A1

公开(公告)日：2001-09-06

申请号：US09757252

申请日：2001-01-09

Applicant: CONSORTIUM FUR ELEKTROCHEMISCHE INDUSTRIE GmbH

Inventor： Jurgen Stohrer ,  Hans-Peter Call ,  Johannes Freudenreich ,  Manfred Amann ,  Robert Muller

IPC: D21C003/20 ,  D21C009/147 ,  D21C009/16 ,  D21H025/02

CPC classification number: C07G1/00 ,  D21C5/005 ,  D21C9/1036

Abstract: Multi-component system for modifying, degrading or bleaching lignin, lignin-containing materials or similar substances, includes (a) if appropriate at least one oxidation catalyst; (b) at least one suitable oxidizing agent; and (c) at least one mediator, wherein the mediator is chosen from the group consisting of N-aryl-N-hydroxyamides.

Abstract translation: 用于改性，降解或漂白木质素，含木质素的材料或类似物质的多组分体系包括（a）如果合适的话至少一种氧化催化剂; （b）至少一种合适的氧化剂; 和（c）至少一种介体，其中介体选自N-芳基-N-羟基酰胺。

公开(公告)号：US06258209B1

公开(公告)日：2001-07-10

申请号：US08906524

申请日：1997-08-05

Applicant: Jürgen Stohrer ,  Hans-Peter Call ,  Johannes Freudenreich ,  Manfred Amann ,  Robert Müller

Inventor： Jürgen Stohrer ,  Hans-Peter Call ,  Johannes Freudenreich ,  Manfred Amann ,  Robert Müller

IPC: D21C9147

CPC classification number: C07G1/00 ,  D21C5/005 ,  D21C9/1036

Abstract: Multi-component system for modifying, degrading or bleaching lignin, lignin-containing materials or similar substances, includes (a) if appropriate at least one oxidation catalyst; (b) at least one suitable oxidizing agent; and (c) at least one mediator, wherein the mediator is chosen from the group consisting of N-aryl-N-hydroxyamides.

Abstract translation: 用于改性，降解或漂白木质素，含木质素的材料或类似物质的多组分体系包括（a）如果合适的话至少一种氧化催化剂; （b）至少一种合适的氧化剂; 和（c）至少一种介体，其中介体选自N-芳基-N-羟基酰胺。

公开(公告)号：US06255118B1

公开(公告)日：2001-07-03

申请号：US09224147

申请日：1998-12-31

Applicant: Joseph C. Alfano ,  Michael J. Fehr ,  Martin R. Godfrey ,  John E. Hoots ,  Karen R. Tubergen ,  James E. Whitten ,  Narasimha M. Rao

Inventor： Joseph C. Alfano ,  Michael J. Fehr ,  Martin R. Godfrey ,  John E. Hoots ,  Karen R. Tubergen ,  James E. Whitten ,  Narasimha M. Rao

IPC: G01N2176

CPC classification number: G01N21/643 ,  D21C9/1036 ,  D21C9/163 ,  Y10T436/117497 ,  Y10T436/12

Abstract: A solid-state fluorometry instrument is provided. The instrument is based on either diode laser or light-emitting diode (LED) excitation sources that are capable of being used in a wide range of applications. The solid-state diode laser based fluorometer instrument monitors fluorescent tracers, particularly suitable for industrial water sample stream applications. Using the instrument, a solid-state diode laser or light-emitting diode (LED) is used as an excitation source to excite fluorescent tracer molecules. The fluorescence resulting from the diode laser excitation is imaged with a lens onto a silicon photodiode detector. An optical filter is placed between the sample cell and the photodiode detector to reject scattered laser light. The output from the photodiode is amplified to produce an output voltage proportional to the quantity of fluorescence striking the photodiode detector. Since fluorescence is proportional to the concentration of a fluorophore present in the sample stream, continuous monitoring of a voltage output may be performed which further allows real time measurement of concentration of a fluorescent tracer present in, for example, a sample stream.

Abstract translation: 提供固体荧光测定仪。 该仪器基于能够在广泛应用中使用的二极管激光器或发光二极管（LED）激发源。 基于固态二极管激光器的荧光计仪器监测荧光示踪剂，特别适用于工业水样品流应用。 使用仪器，使用固态二极管激光器或发光二极管（LED）作为激发源来激发荧光示踪剂分子。 由二极管激光激发产生的荧光用透镜成像到硅光电二极管检测器上。 将滤光器放置在样品池和光电二极管检测器之间以抑制散射的激光。 来自光电二极管的输出被放大以产生与触发光电二极管检测器的荧光量成比例的输出电压。 由于荧光与存在于样品流中的荧光团的浓度成比例，因此可以进行电压输出的连续监测，其进一步允许实时测量存在于例如样品流中的荧光示踪剂的浓度。