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1. 发明申请

US20080277083A1 METHOD OF MONITORING AND INHIBITING SCALE DEPOSITION IN PULP MILL EVAPORATORS AND CONCENTRATORS 有权
标题翻译：脉冲蒸发器和浓缩器中监测和抑制定标沉积的方法
公开(公告)号：US20080277083A1
公开(公告)日：2008-11-13
申请号：US11746947
申请日：2007-05-10
申请人： Sergey M. Shevchenko , Prasad Y. Duggirala , Dmitri L. Kouznetsov
发明人： Sergey M. Shevchenko , Prasad Y. Duggirala , Dmitri L. Kouznetsov
IPC分类号： D21C7/14
CPC分类号： D21C11/106 , D21C3/226 , D21C9/008
摘要： A method of monitoring and inhibiting scale precipitation and deposition from spent liquor in pulp mill evaporators and concentrators is disclosed. The method includes connecting a black liquor deposition monitor to a pulp mill evaporator or concentrator and measuring the thermal conductivity on the outer surface of the monitor. A controller interprets the measured thermal conductivity and determines a level of scale deposition. If the level of scale deposition is above a predetermined level, the controller is operable to introduce a scale-inhibiting composition to the spent liquor. The scale-inhibiting composition may include organic polycarboxylic acids; organic fatty acids; low molecular weight and polymeric aromatic acids; organic acid esters, anhydrides, and amides; low molecular weight and polymeric aliphatic and aromatic sulfonic acids; and low molecular weight and polymeric amines; and any combinations.
摘要翻译：公开了一种在纸浆厂蒸发器和浓缩器中监测和抑制废液中沉淀和沉积废水的方法。该方法包括将黑液沉积监测器连接到纸浆厂蒸发器或浓缩器并测量监测器外表面上的热导率。控制器解释所测量的热导率并确定刻度沉积程度。如果水垢沉积高于预定水平，则控制器可操作地将废垢组合物引入废液中。抑垢组合物可以包括有机多元羧酸; 有机脂肪酸; 低分子量和聚合芳香酸; 有机酸酯，酸酐和酰胺; 低分子量和聚合的脂族和芳族磺酸; 和低分子量和聚合胺; 和任何组合。

2. 发明授权

US06942782B2 Method and apparatus for measuring deposit forming capacity of fluids using an electrochemically controlled pH change in the fluid proximate to a piezoelectric microbalance 有权
标题翻译：使用靠近压电微量天平的流体中的电化学控制的pH变化来测量流体的沉积物形成能力的方法和装置
公开(公告)号：US06942782B2
公开(公告)日：2005-09-13
申请号：US10127380
申请日：2002-04-22
申请人： Sergey M. Shevchenko , Dmitri L. Kouznetsov , Prasad Y. Duggirala
发明人： Sergey M. Shevchenko , Dmitri L. Kouznetsov , Prasad Y. Duggirala
IPC分类号： G01N27/416 , G01N1/00 , G01N5/02 , G01N27/00 , G01N27/26 , G01N27/27 , G01N27/42 , G01N29/02 , G01N29/22 , G01N29/30 , G01N33/02 , G01N33/18
CPC分类号： G01N17/008 , G01N27/42 , G01N29/022 , G01N29/222 , G01N29/30 , G01N33/1853 , G01N2291/0256 , G01N2291/0426
摘要： A method and apparatus for measuring the deposit forming propensity of a continuously flowing fluid having a bulk pH of about 1 to about 12 comprising measuring the rate at which deposit forms on a quartz crystal microbalance having a top side comprising a working electrode in contact with the fluid and a bottom side isolated from the fluid, wherein the pH of the fluid proximate to the microbalance is controlled electrochemically at about 1 to about 14 by applying to the working electrode a cathodic current of about −0.001 to about −100 mA/cm2 or an anodic current of from about 0.001 to about 100 mA/cm2 and wherein the working electrode is coated with or made of a conductive material on which the rate of hydrogen gas evolution is at least 10 times lower than on a gold cathode in acidic solution.
摘要翻译：一种用于测量体积pH为约1至约12的连续流动流体的沉积物形成倾向的方法和装置，包括测量在具有顶面的石英晶体微量天平上形成沉积物的速率，所述顶面包含与流体和与流体隔离的底侧，其中通过向工作电极施加约-0.001至约-100mA / cm 2的阴极电流，靠近微量天平的流体的pH在约1至约14℃下电化学地控制， SUP> 2或大约0.001至大约100mA / cm 2的阳极电流，并且其中工作电极涂覆有导电材料或其上的氢气的速率进化比酸性溶液中的金阴极至少低10倍。

3. 发明授权

US07985318B2 Method of monitoring and inhibiting scale deposition in pulp mill evaporators and concentrators 有权
标题翻译：监测和抑制纸浆蒸发器和浓缩器中垢垢沉积的方法
公开(公告)号：US07985318B2
公开(公告)日：2011-07-26
申请号：US11746947
申请日：2007-05-10
申请人： Sergey M. Shevchenko , Prasad Y. Duggirala , Dmitri L. Kouznetsov
发明人： Sergey M. Shevchenko , Prasad Y. Duggirala , Dmitri L. Kouznetsov
IPC分类号： D21C7/14
CPC分类号： D21C11/106 , D21C3/226 , D21C9/008
摘要： A method of monitoring and inhibiting scale precipitation and deposition from spent liquor in pulp mill evaporators and concentrators is disclosed. The method includes connecting a black liquor deposition monitor to a pulp mill evaporator or concentrator and measuring the thermal conductivity on the outer surface of the monitor. A controller interprets the measured thermal conductivity and determines a level of scale deposition. If the level of scale deposition is above a predetermined level, the controller is operable to introduce a scale-inhibiting composition to the spent liquor. The scale-inhibiting composition may include organic polycarboxylic acids; organic fatty acids; low molecular weight and polymeric aromatic acids; organic acid esters, anhydrides, and amides; low molecular weight and polymeric aliphatic and aromatic sulfonic acids; and low molecular weight and polymeric amines; and any combinations.
摘要翻译：公开了一种在纸浆厂蒸发器和浓缩器中监测和抑制废液中沉淀和沉积废水的方法。该方法包括将黑液沉积监测器连接到纸浆厂蒸发器或浓缩器并测量监测器外表面上的热导率。控制器解释所测量的热导率并确定刻度沉积程度。如果水垢沉积高于预定水平，则控制器可操作地将废垢组合物引入废液中。抑垢组合物可以包括有机多元羧酸; 有机脂肪酸; 低分子量和聚合芳香酸; 有机酸酯，酸酐和酰胺; 低分子量和聚合的脂族和芳族磺酸; 和低分子量和聚合胺; 和任何组合。

4. 发明授权

US06375829B1 Method and apparatus for measuring scaling capacity of calcium oxalate solutions using an electrochemically controlled pH change in the solution proximate to a piezoelectric microbalance 有权
标题翻译：用于在靠近压电微量天平的溶液中使用电化学控制的pH变化来测量草酸钙溶液的结垢能力的方法和设备
公开(公告)号：US06375829B1
公开(公告)日：2002-04-23
申请号：US09519688
申请日：2000-03-07
申请人： Sergey M. Shevchenko , Dmitri L. Kouznetsov , Prasad Y. Duggirala
发明人： Sergey M. Shevchenko , Dmitri L. Kouznetsov , Prasad Y. Duggirala
IPC分类号： G01N2742
CPC分类号： G01N29/30 , G01N29/022 , G01N29/222 , G01N33/1853 , G01N2291/0256 , G01N2291/0426
摘要： This invention is directed to a method and apparatus for measuring the rate of calcium oxalate scale formation in a continuously flowing solution having a pH of from about 2 to about 3 comprising measuring the rate of deposition of calcium oxalate scale from the solution on to a quartz crystal microbalance having a top side comprising a working electrode in contact with the solution and a second, bottom side isolated from the solution, wherein the pH of the solution proximate to the microbalance is measured using a pH measuring module and is controlled electrochemically at from about 3.5 to about 9 and wherein the working electrode is coated with or made of a conductive material on which the intensive evolution of hydrogen gas proceeds at potentials more negative than those necessary to achieve a pH of 3.5-9 proximate to the microbalance.
摘要翻译：本发明涉及一种用于测量pH为约2至约3的连续流动的溶液中草酸钙结垢速率的方法和装置，包括测量草酸钙垢从溶液沉积到石英上的速率晶体微量天平具有顶面，其包括与溶液接触的工作电极和与溶液分离的第二底侧，其中使用pH测量模块测量接近微量天平的溶液的pH，并且从约 3.5至约9，并且其中所述工作电极涂覆或由导电材料制成，在所述导电材料上，氢气的强烈演变以比实现微量天平附近pH为3.5-9所需的电位更负的电势进行。

5. 发明授权

US07351764B2 Methods to enhance brightness of pulp and optimize use of bleaching chemicals 失效
标题翻译：提高纸浆亮度的方法，优化漂白剂的使用
公开(公告)号：US07351764B2
公开(公告)日：2008-04-01
申请号：US10814969
申请日：2004-03-31
申请人： Sergey M. Shevchenko , Prasad Y. Duggirala
发明人： Sergey M. Shevchenko , Prasad Y. Duggirala
IPC分类号： C09K15/32 , C09K3/10 , C01B15/02 , D21C9/12 , D06L3/02
CPC分类号： D21H11/20 , D21C9/001 , D21C9/1042 , D21C9/163
摘要： Mechanical or Chemical pulp is treated with about 0.01 weight % to about 5 weight % of a Mixture. The Mixture is water; diethylenetriaminepentakis(methyl)phosphonic acid or its known salts; polyacrylic acid or its known salts; and optionally one or more inert compounds. This Mixture acts to either maintain the brightness level of the pulp at the target level or to increase the brightness level of the pulp. In addition the Mixture allows for maintaining the pulp at the target level of brightness even when the amounts of other ingredients, such as hydrogen peroxide, hydrosulfite, sodium silicate and magnesium, that are typically added to the pulp, are reduced.
摘要翻译：用约0.01重量％至约5重量％的混合物处理机械或化学纸浆。混合物是水; 二亚乙基三胺（甲基）膦酸或其已知的盐; 聚丙烯酸或其已知的盐; 和任选的一种或多种惰性化合物。该混合物用于将纸浆的亮度水平保持在目标水平或增加纸浆的亮度水平。此外，即使当通常添加到纸浆中的其它成分如过氧化氢，连二亚硫酸盐，硅酸钠和镁的量减少时，混合物也允许将纸浆保持在目标的亮度水平。

6. 发明授权

US07229525B2 Methods to enhance pulp bleaching and delignification 失效
标题翻译：增强纸浆漂白和脱木质素的方法
公开(公告)号：US07229525B2
公开(公告)日：2007-06-12
申请号：US11121217
申请日：2005-05-03
申请人： Prasad Y. Duggirala , Sergey M. Shevchenko , Kristine S. Salmen
发明人： Prasad Y. Duggirala , Sergey M. Shevchenko , Kristine S. Salmen
IPC分类号： D21B1/16
CPC分类号： D21C9/1042 , D21C3/22 , D21C9/147
摘要： A method to enhance brightness in Chemical and Mechanical pulps comprising adding an organic sulfide chelant is described and claimed.A method to enhance delignification in a Chemical pulp comprising adding an organic sulfide chelant is also described and claimed.
摘要翻译：描述并要求保护包括添加有机硫化物螯合剂的化学和机械纸浆中的亮度提高方法。还描述并要求保护增加化学纸浆中脱木质素的方法，包括加入有机硫化物螯合剂。

7. 发明授权

US07914646B2 Compositions and processes for paper production 有权
标题翻译：纸张生产的组成和过程
公开(公告)号：US07914646B2
公开(公告)日：2011-03-29
申请号：US11490738
申请日：2006-07-21
申请人： Prasad Y. Duggirala , Sergey M. Shevchenko , Katherine M. Broadus
发明人： Prasad Y. Duggirala , Sergey M. Shevchenko , Katherine M. Broadus
IPC分类号： D21F11/00 , D21C9/10
CPC分类号： D21H21/32 , D21C9/002 , D21C9/004 , D21C9/005 , D21H21/30
摘要： Oxidative compositions and processes that preserve and enhance the brightness and improve color of pulp or paper when applied during different stages of the papermaking process are identified. The oxidative composition and method maintains and/or enhances brightness, prevents yellowing, and enhances the performance of paper products. Used in combination with optical brighteners and/or chelants the oxidative agents produce a synergistic effect not previously identified in the paper process.
摘要翻译：确定当在造纸过程的不同阶段应用时保持并增强纸浆或纸张的亮度和改善颜色的氧化组合物和方法。氧化组合物和方法维持和/或增强亮度，防止黄变，并提高纸产品的性能。与荧光增白剂和/或螯合剂组合使用时，氧化剂产生以前在纸张过程中未被鉴定的协同效应。

8. 发明授权

US08262858B2 Compositions and processes for paper production 有权
标题翻译：纸张生产的组成和过程
公开(公告)号：US08262858B2
公开(公告)日：2012-09-11
申请号：US13074092
申请日：2011-03-29
申请人： Prasad Y. Duggirala , Sergey M. Shevchenko , Katherine M. Broadus
发明人： Prasad Y. Duggirala , Sergey M. Shevchenko , Katherine M. Broadus
IPC分类号： D21F11/00 , D21C9/10
CPC分类号： D21H21/32 , D21C9/002 , D21C9/004 , D21C9/005 , D21H21/30
摘要： Oxidative compositions and processes that preserve and enhance the brightness and improve color of pulp or paper when applied during different stages of the papermaking process are identified. The oxidative composition and method maintains and/or enhances brightness, prevents yellowing, and enhances the performance of paper products. Used in combination with optical brighteners and/or chelants the oxidative agents produce a synergistic effect not previously identified in the paper process.
摘要翻译：确定当在造纸过程的不同阶段应用时保持并增强纸浆或纸张的亮度和改善颜色的氧化组合物和方法。氧化组合物和方法维持和/或增强亮度，防止黄变，并提高纸产品的性能。与荧光增白剂和/或螯合剂组合使用时，氧化剂产生以前在纸张过程中未被鉴定的协同效应。

9. 发明授权

US08092649B2 Method of decreasing the rate of photoyellowing with thiocyanic acid 有权
标题翻译：用硫氰酸降低光合速率的方法
公开(公告)号：US08092649B2
公开(公告)日：2012-01-10
申请号：US11302862
申请日：2005-12-14
申请人： Sergey M. Shevchenko , Prasad Y. Duggirala
发明人： Sergey M. Shevchenko , Prasad Y. Duggirala
IPC分类号： D21H17/62 , D21H21/38 , D21H17/11
CPC分类号： D21H21/14 , D21H17/09 , D21H21/30
摘要： A method of decreasing the rate of photoyellowing in paper containing mechanical pulp comprising: applying an aqueous solution containing an effective amount of one or more salts of thiocyanic acid on the surface of a paper sheet in a papermaking process.
摘要翻译：一种降低含纸机械纸浆中光胶化速率的方法，包括：在造纸过程中，将含有有效量的一种或多种硫氰酸盐的水溶液施加到纸张表面上。

10. 发明申请

US20080017337A1 Compositions and processes for paper production 有权
标题翻译：纸张生产的组成和过程
公开(公告)号：US20080017337A1
公开(公告)日：2008-01-24
申请号：US11490738
申请日：2006-07-21
申请人： Prasad Y. Duggirala , Sergey M. Shevchenko , Katherine M. Broadus
发明人： Prasad Y. Duggirala , Sergey M. Shevchenko , Katherine M. Broadus
IPC分类号： D21C9/10 , D21C9/16 , D21H21/30 , D21H21/32
CPC分类号： D21H21/32 , D21C9/002 , D21C9/004 , D21C9/005 , D21H21/30
摘要： Oxidative compositions and processes that preserve and enhance the brightness and improve color of pulp or paper when applied during different stages of the papermaking process are identified. The oxidative composition and method maintains and/or enhances brightness, prevents yellowing, and enhances the performance of paper products. Used in combination with optical brighteners and/or chelants the oxidative agents produce a synergistic effect not previously identified in the paper process.
摘要翻译：确定当在造纸过程的不同阶段应用时保持并增强纸浆或纸张的亮度和改善颜色的氧化组合物和方法。氧化组合物和方法维持和/或增强亮度，防止黄变，并提高纸产品的性能。与荧光增白剂和/或螯合剂组合使用时，氧化剂产生以前在纸张过程中未被鉴定的协同效应。

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