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公开(公告)号：US08834675B2
公开(公告)日：2014-09-16
申请号：US12781827
申请日：2010-05-18
申请人： Sebastien Tixier
发明人： Sebastien Tixier
摘要： Scale formation on the electrode(s) of a liquor sensor can be prevented by continuously delivering a water-soluble scale inhibitor or dispersant into the vicinity of the electrodes of a liquor sensor device. Scale inhibitors include, for instance, polymers that are derived from acrylic acid, maleic acid, acrylamide acid, phosphonate, and combinations thereof. An aqueous mixture of scaling inhibitor continuously delivered to the probe tip of the liquor sensor that was placed in a kraft pulping liquor allowed the sensor to operate accurately for over a month without having to be cleaned of scale.
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2.发明授权Method of monitoring and inhibiting scale deposition in pulp mill evaporators and concentrators 有权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
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。
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3.发明授权Batch process for producing chemical pulp by removing and reintroducing calcium-containing spent liquor in the digester 失效通过在蒸煮器中除去并重新引入含钙废液来生产化学纸浆的分批方法公开(公告)号：US06939439B1
公开(公告)日：2005-09-06
申请号：US10089022
申请日：2000-10-04
申请人： Asko Paakki , Päivi Uusitalo , Mikael Svedman
发明人： Asko Paakki , Päivi Uusitalo , Mikael Svedman
CPC分类号： D21C3/226 , D21C1/00 , D21C11/106
摘要： Methods for producing chemical pulp from lignocellulose-containing material in processes for kraft pulp production are disclosed including charging the lignocellulose-containing material to a digester, initially treating the lignocellulose-containing material with an impregnation liquor, and then treating the impregnated lignocellulose-containing material with hot liquor and displacing calcium-containing spent liquor from the digester during that treatment, heating and cooking the heated lignocellulose-containing material to produce cooked lignocellulose-containing material and cooking liquor and displacing the cooking liquor from the digester using at least a portion of the displaced calcium-containing spent liquor.
摘要翻译： 公开了在含硫酸盐纸浆生产方法中从含木素纤维素材料生产化学纸浆的方法，其中包括将含木素纤维素的材料装入消化器，首先用浸渍液处理含木素纤维素的材料，然后处理含浸木素纤维素材料 在该处理期间用热液和从消化器中取代含钙废液，加热和烹饪加热的含木素纤维素的材料以产生煮熟的含木素纤维素的材料和蒸煮液，并使蒸煮器从蒸煮器中移出至少一部分 置换的含钙废液。
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公开(公告)号：US20030075290A1
公开(公告)日：2003-04-24
申请号：US10164331
申请日：2002-06-05
IPC分类号： D21C011/00 , C02F005/02 , C02F005/14 , C02F001/58 , C02F001/66 , C02F001/68
摘要： Compositions and method of improving inhibition of calcium salt scale formation under the conditions found in chemical pulp processes in which an effective amount of selected phosphonates or phosphonate blends is admixed with the black liquor composition recovered from the digester in a chemical pulping process. The compositions and method are especially well suited for use in the Kraft pulping process.
摘要翻译： 在化学纸浆工艺中发现的条件下改进钙盐垢形成抑制的组合物和方法，其中将有效量的选择的膦酸酯或膦酸酯共混物与在化学制浆过程中从蒸煮器回收的黑液组合物混合。 组合物和方法特别适用于硫酸盐法制浆工艺。
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公开(公告)号：US5407583A
公开(公告)日：1995-04-18
申请号：US92171
申请日：1993-07-15
CPC分类号： C02F5/10 , C02F5/12 , C02F5/14 , D21C11/106 , D21C3/226
摘要： An anionic/cationic polymer mixture comprising:(a) a polyanion selected from polyacrylic acid, polymethacrylic acid, and polymaleic anhydride, each optionally copolymerized with each other, or optionally copolymerized with acrylamide up to a molar unit ratio of 1:1, provided that the total polyanionic weight average molecular weight is from about 1 to 5 thousand, and(b) the polycation poly(dimethyldiallylammonium chloride) having a weight average molecular weight of from about 25 thousand to 1 million,wherein the weight ratio of polyanion (a) to polycation (b) is from 1:2 to 1:8, has been found to give excellent inhibition of the formation, deposition and adherence of various alkali metal and alkaline earth metal scales, e.g., sodium sulfate, sodium carbonate and calcium carbonate scales in the stringent conditions which characterize black liquor heaters, evaporators, etc. in paper mills, particularly in association with Kamyr and similar wood chip digesters, characterized by elevated pH's of 12 and higher, high dissolved organic and inorganic solids concentrations, and elevated temperatures and pressures.
摘要翻译： 阴离子/阳离子聚合物混合物，其包含：（a）选自聚丙烯酸，聚甲基丙烯酸和聚马来酸酐的聚阴离子，各自任选地彼此共聚，或任选地与丙烯酰胺共聚，直到摩尔单位比为1:1，条件是 总聚阴离子重均分子量为约1〜5万，（b）重均分子量为约2.5万〜1万的聚阳离子聚（二甲基二烯丙基氯化铵），其中聚阴离子（a） 聚阳离子（b）的摩尔比为1:2至1:8，已被发现能够对各种碱金属和碱土金属垢的形成，沉积和粘附产生极好的抑制作用，例如硫酸钠，碳酸钠和碳酸钙垢 在造纸厂的黑液加热器，蒸发器等特征的严格条件下，特别是与Kamyr和类似的木屑消化器相关联，其特征在于： pH为12以上，高溶解有机和无机固体浓度，以及升高的温度和压力。
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公开(公告)号：US5254286A
公开(公告)日：1993-10-19
申请号：US988544
申请日：1992-12-10
CPC分类号： C02F5/10 , C02F5/12 , C02F5/14 , D21C11/106 , D21C3/226
摘要： An anionic/cationic polymer mixture comprising:(a) a polyanion selected from polyacrylic acid, polymethacrylic acid, and polymaleic anhydride, each optionally copolymerized with each other, or optionally copolymerized with acrylamide up to a molar unit ratio of 1:1, provided that the total polyanionic weight average molecular weight is from about 1 to 5 thousand, and(b) the polycation poly(dimethyldiallylammonium chloride) having a weight average molecular weight of from about 25 thousand to 1 million,wherein the weight ratio of polyanion (a) to polycation (b) is from 1:2 to 1:8, has been found to give excellent inhibition of the formation, deposition and adherence of various alkali metal and alkaline earth metal scales, e.g., sodium sulfate, sodium carbonate, and calcium carbonate scales in the stringent conditions which characterize black liquor heaters, evaporators, etc. in paper mills, particularly in association with Kamyr and similar wood chip digesters, characterized by elevated pH's of 12 and higher, high dissolved organic and inorganic solids concentrations, and elevated temperatures and pressures.
摘要翻译： 一种阴离子/阳离子聚合物混合物，其包含：（a）选自聚丙烯酸，聚甲基丙烯酸和聚马来酸酐的聚阴离子，各自任选地彼此共聚，或任选地与丙烯酰胺共聚，直到摩尔单位比为1:1，条件是 总聚阴离子重均分子量为约1〜5万，（b）重均分子量为约2.5万〜1万的聚阳离子聚（二甲基二烯丙基氯化铵），其中聚阴离子（a） 对于聚阳离子（b）为1:2至1:8，已经发现对各种碱金属和碱土金属垢的形成，沉积和粘附具有极好的抑制作用，例如硫酸钠，碳酸钠和碳酸钙 在造纸厂的黑液加热器，蒸发器等特征的严格条件下，特别是与Kamyr和类似的木屑消化器相关联，其特征是eleva pH为12以上，高溶解有机和无机固体浓度，以及升高的温度和压力。
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公开(公告)号：US11905655B2
公开(公告)日：2024-02-20
申请号：US16941931
申请日：2020-07-29
申请人： ECOLAB USA INC.
CPC分类号： D21C11/106 , D21C3/226 , D21C11/0092
摘要： The disclosure provides methods and compositions for reducing the viscosity of black liquor. Also provided are methods of inhibiting deposition of scale and methods of processing black liquor. In some embodiments, the compositions include a carboxylate-containing polymer and an inorganic salt. In some embodiments, the compositions include a carboxylate-containing polymer, an inorganic salt, and a surfactant.
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8.发明申请METHOD OF MONITORING AND INHIBITING SCALE DEPOSITION IN PULP MILL EVAPORATORS AND CONCENTRATORS 有权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：US20110277948A1
公开(公告)日：2011-11-17
申请号：US13189965
申请日：2011-07-25
IPC分类号： D21C7/12
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。
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9.发明授权Compositions and processes to increase pulp yield, reduce extractives, and reduce scaling in a chemical pulping process 有权在化学制浆过程中增加纸浆产量，减少萃取物并减少结垢的组合物和方法公开(公告)号：US07807021B2
公开(公告)日：2010-10-05
申请号：US11472498
申请日：2006-06-21
摘要： In general, the present disclosure is directed to compositions and processes to increase pulp yield, reduce extractives, and reduce scaling in a chemical pulping process. In one particular embodiment, for instance, the present disclosure is directed to a composition comprising a surface active agent, an alkaline mixture, at least one polymer, the polymer having a linear backbone segment having two ends, at least one phosphorus component, the phosphorus component chemically linked along the linear backbone segment of the polymer, and at least one end component, the end component chemically linked to one or both ends of the linear backbone segment of the polymer.
摘要翻译： 通常，本公开涉及在化学制浆过程中增加纸浆产量，减少萃取物并减少结垢的组合物和方法。 在一个具体实施方案中，例如，本公开涉及包含表面活性剂，碱性混合物，至少一种聚合物，所述聚合物具有具有两个末端的直链骨架部分，至少一种磷成分，磷 沿着聚合物的线性主链段化学连接的组分和至少一个末端组分，该末端组分与聚合物的线性主链段的一个或两个末端化学连接。
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公开(公告)号：US20040256070A1
公开(公告)日：2004-12-23
申请号：US10895589
申请日：2004-07-21
IPC分类号： D21H021/02
摘要： Compositions and method for improving inhibition of calcium salt scale formation under the conditions found in chemical pulp processes in which an effective amount of selected phosphonates or phosphonate blends is admixed with the aqueous digester composition in a chemical pulping process during the digestion stage. The compositions and method are especially well suited for use in the Kraft pulping process.
摘要翻译： 在化学纸浆工艺中发现的条件下改善钙盐垢形成抑制的组合物和方法，其中在消化阶段期间在化学制浆过程中将有效量的选择的膦酸酯或膦酸酯共混物与水性消化器组合物混合。 组合物和方法特别适用于硫酸盐法制浆工艺。
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