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1. 发明申请

US20070246176A1 Pulp Bleaching Processes 审中-公开
标题翻译：纸浆漂白工艺
公开(公告)号：US20070246176A1
公开(公告)日：2007-10-25
申请号：US11628961
申请日：2005-06-08
申请人： Shoichi Miyawaki , Kazuhiro Kurosu , Takashi Ochi
发明人： Shoichi Miyawaki , Kazuhiro Kurosu , Takashi Ochi
IPC分类号： D21C9/10
CPC分类号： D21C9/1005 , D21C9/1084 , D21C9/16
摘要： The present invention aims to further advance the acid treatment or irradiation technology for pulp to develop a bleaching process using smaller amounts of chlorine chemicals with higher efficiency as compared with conventional bleaching processes. It also aims to provide an excellent high brightness pulp having a low environmental impact and no discoloration as well as a paper containing it. The present invention provides a chlorine-free bleaching process with very high efficiency by irradiating a pulp washed after an acid treatment with UV light and/or visible light at a wavelength of 100-400 nm under alkaline conditions, preferably in a pH range of 10-13. The acid treatment can be performed under conditions of pH 1-6 and a temperature of 80° C. or more. The irradiation treatment can be performed in the presence of at least one compound selected from the group consisting of reducing agents, peroxides, and hydrogen-donating organic compounds. The present invention also provides a high brightness chemical pulp having an ISO brightness of 88% or more and a brightness loss of 1.0% or less in a specific fading test.
摘要翻译：本发明旨在进一步推进纸浆的酸处理或照射技术，与常规漂白方法相比，使用较少量的氯化学品与更高效率开发漂白工艺。它还旨在提供具有低环境影响和不变色的优异的高亮度纸浆以及含有它的纸。本发明通过在碱性条件下，优选在pH范围为10的范围内，用紫外光和/或波长为100-400nm的紫外线和/或可见光照射经过酸洗处理的纸浆，提供了非常高的效率的无氯漂白方法 -13。酸处理可以在pH 1-6和温度为80℃以上的条件下进行。辐射处理可以在至少一种选自还原剂，过氧化物和给氢有机化合物的化合物存在下进行。本发明还提供了在特定的褪色试验中，ISO亮度为88％以上，亮度损失为1.0％以下的高亮度化学纸浆。

2. 发明授权

US09145642B2 Cooking process of lignocellulose material 有权
标题翻译：木质纤维素材料的烹饪过程
公开(公告)号：US09145642B2
公开(公告)日：2015-09-29
申请号：US13322729
申请日：2010-05-18
申请人： Kazuhiro Kurosu , Keigo Watanabe , Takamichi Kishi
发明人： Kazuhiro Kurosu , Keigo Watanabe , Takamichi Kishi
IPC分类号： D21C3/02 , D21C3/24
CPC分类号： D21C3/022 , D21C3/02 , D21C3/24
摘要： A continuous cooking process making use of a digester, which includes therein, from a top toward a bottom of the digester, a top zone, an upper cooking zone, a lower cooking zone and a cooking/washing zone and also includes strainers provided at the bottom of the respective zones and wherein a cooking black liquor extracted from at least one of the strainers is discharged to outside a digestion system, a process for cooking a lignocellulose characterized by feeding, upstream of the top of the digester, a first cooking liquor containing an alkaline cooking liquor having a specified composition, feeding a second cooking liquor of an alkaline cooking liquor made mainly of sodium hydroxide to the upper cooking zone, and feeding a third cooking liquor of an alkaline cooking liquor similar to the second cooking liquor to the cooking/washing zone.
摘要翻译：使用包括其中的消化器从蒸煮器的顶部到底部的蒸煮器的连续烹饪过程，顶部区域，上部烹饪区域，下部烹饪区域和烹饪/洗涤区域，并且还包括设置在蒸煮器底部，并且其中从至少一个过滤器提取的烹饪黑液排出到消化系统的外部，用于烹饪木质纤维素的方法，其特征在于，在蒸煮器顶部的上游供给含有将具有特定组成的碱性蒸煮液，将主要由氢氧化钠制成的碱性蒸煮液的第二蒸煮液供给到上部烹饪区域，并将与第二烹饪液类似的碱性蒸煮液的第三蒸煮液送入烹饪 /洗涤区。

3. 发明申请

US20090242422A1 Method for recovering performance of electrolyzer for use in production of polysulfide and method for stopping holding electrolyzer 审中-公开
标题翻译：回收多硫化物生产中使用的电解槽性能的方法及停止电解槽的方法
公开(公告)号：US20090242422A1
公开(公告)日：2009-10-01
申请号：US12384063
申请日：2009-03-31
申请人： Kazuhiro Kurosu , Keigo Watanabe , Junji Tanaka
发明人： Kazuhiro Kurosu , Keigo Watanabe , Junji Tanaka
IPC分类号： C25B1/22 , C25B15/00
CPC分类号： C25B15/00 , C25B1/14
摘要： In an electrolyzer comprising an anode compartment provided with porous anodes, a cathode compartment, and a membrane providing a partition between the anode compartment and the cathode compartment, wherein a solution containing sulfide ions is introduced into the anode compartment, and an aqueous solution containing caustic soda is introduced into the cathode compartment, thereby producing a polysulfide containing polysulfide sulfur through electrolytic oxidation, wherein the anode compartment of the electrolyzer is cleaned with the use, of an aqueous solution containing at least either one of an inorganic acid, a chelating agent, and a scale-cleaning agent, thereby recovering performance of the electrolyzer. Further, when the contents of the anode compartment are replaced with an alkaline aqueous solution containing not more than 0.1 mass % of sulfide ions and not more than 0.1 mass % of carbonate ions upon stopping the electrolytic oxidation, thereby maintaining the performance of the electrolyzer.
摘要翻译：在包括设置有多孔阳极的阳极室，阴极室和在阳极室和阴极室之间提供隔板的膜的电解槽中，其中将包含硫化物离子的溶液引入阳极室中，并将含有苛性碱的水溶液将苏打引入阴极室，由此通过电解氧化生成含有多硫化硫的硫化物，其中使用含有无机酸，螯合剂，螯合剂等中的至少一种的水溶液清洗电解槽的阳极室，和垢垢清洗剂，从而回收电解槽的性能。此外，当停止电解氧化时，当含有不超过0.1质量％的硫化物离子和不超过0.1质量％的碳酸根离子的碱性水溶液代替阳极室的内容物，从而保持电解器的性能。

4. 发明申请

US20120067533A1 COOKING PROCESS OF LIGNOCELLULOSE MATERIAL 有权
标题翻译：纤维素材料的烹饪过程
公开(公告)号：US20120067533A1
公开(公告)日：2012-03-22
申请号：US13322729
申请日：2010-05-18
申请人： Kazuhiro Kurosu , Keigo Watanabe , Takamichi Kishi
发明人： Kazuhiro Kurosu , Keigo Watanabe , Takamichi Kishi
IPC分类号： D21C3/24
CPC分类号： D21C3/022 , D21C3/02 , D21C3/24
摘要： In a cooking process of a lignocellulose material, pulp yield can be improved at the same Kappa number and an effective alkali addition rate can be reduced at the same Kappa number.In a continuous cooking process making use of a digester, which includes therein, from a top toward a bottom of the digester, a top zone, an upper cooking zone, a lower cooking zone and a cooking/washing zone and also includes strainers provided at the bottom of the respective zones and wherein a cooking black liquor extracted from at least one of the strainers is discharged to outside a digestion system, a process for cooking a lignocellulose characterized by comprising feeding, upstream of the top of the digester, a first cooking liquor comprised of an alkaline cooking liquor having specified composition, feeding a second cooking liquor comprised of an alkaline cooking liquor made mainly of sodium hydroxide to the upper cooking zone, and feeding a third cooking liquor comprised of an alkaline cooking liquor similar to the second cooking liquor to the cooking/washing zone.
摘要翻译：在木质纤维素材料的烹饪过程中，可以以相同的卡伯值提高纸浆产率，并且可以以相同的卡伯值降低有效的碱添加速率。在使用包括其中的蒸煮器的连续烹饪过程中，从蒸煮器的顶部到底部，顶部区域，上部烹饪区域，下部烹饪区域和烹饪/洗涤区域，并且还包括设置在各个区域的底部，并且其中从至少一个过滤器提取的烹饪黑液排出到消化系统的外部，用于烹饪木质纤维素的方法，其特征在于包括在蒸煮器顶部的上游进料第一烹饪由具有特定组成的碱性烹调液组成的液体，将由主要由氢氧化钠制成的碱性蒸煮液组成的第二烹饪液体进料到上部烹饪区域，并且将与第二烹饪类似的碱性蒸煮液酒到烹饪/洗涤区。

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