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1. 发明授权

US6048437A Process for bleaching chemical pulp with chlorine dioxide, peroxide and Na.sub.2 M.sub.0 O.sub.4 as reaction catalyt 失效
标题翻译：用二氧化氯，过氧化物和Na2MOO4作为反应催化剂漂白化学纸浆的方法
公开(公告)号：US6048437A
公开(公告)日：2000-04-11
申请号：US716034
申请日：1996-09-19
申请人： Takamasa Fukushima , Tetsuo Koshitsuka , Yuh Miyauchi , Akiyo Shimada , Takahiro Cho
发明人： Takamasa Fukushima , Tetsuo Koshitsuka , Yuh Miyauchi , Akiyo Shimada , Takahiro Cho
IPC分类号： D21C9/10 , D21C9/14 , D21C9/16
CPC分类号： D21C9/1036 , D21C9/14 , D21C9/163
摘要： A process for bleaching chemical pulp for paper manufacturing comprising delignifying and bleaching chemical pulp which has been treated by cooking by simultaneous use of chlorine dioxide, a peroxide, and at least one reaction catalyst selected from the group consisting of oxoacids of elements of Groups IV, V and VI and salts of these acids. Formation of organic chlorine compounds as by-products is suppressed by decreasing the amount of chlorine dioxide used in the ECF bleaching process in the first stage, and thus environmental toxicity in the waste water discharged from the bleaching process is decreased. Chemical pulp having a high degree of brightness is economically produced because increase in the production capacity is not required at all or suppressed to the minimum, and the investment cost is reduced to the minimum when the bleaching with chlorine in the first stage is converted into the bleaching with chlorine dioxide which is an ECF bleaching process.
摘要翻译：一种漂白用于造纸的化学纸浆的方法，包括脱木素和漂白化学纸浆，其已经通过同时使用二氧化氯，过氧化物和至少一种选自以下组中的至少一种反应催化剂进行烹饪来处理，所述反应催化剂选自IV族元素的含氧酸， V和VI以及这些酸的盐。作为副产物的有机氯化合物的形成通过减少在第一阶段的ECF漂白过程中使用的二氧化氯的量来抑制，因此从漂白过程排出的废水中的环境毒性降低。经济地制造具有高亮度的化学纸浆，因为生产能力的增加根本不需要或被抑制到最低限度，并且当将第一阶段的氯漂白转化为用作为ECF漂白工艺的二氧化氯漂白。

2. 发明授权

US06432266B1 Process for bleaching chemical pulp simultaneously with chlorine dioxide, peroxide and a reaction catalyst 有权
标题翻译：用二氧化氯，过氧化物和反应催化剂同时漂白化学纸浆的方法
公开(公告)号：US06432266B1
公开(公告)日：2002-08-13
申请号：US09620439
申请日：2000-07-20
申请人： Takamasa Fukushima , Tetsuo Koshitsuka , Yuh Miyauchi , Akiyo Shimada , Takahiro Cho
发明人： Takamasa Fukushima , Tetsuo Koshitsuka , Yuh Miyauchi , Akiyo Shimada , Takahiro Cho
IPC分类号： D21C914
CPC分类号： D21C9/1036 , D21C9/14 , D21C9/163
摘要： A process for bleaching chemical pulp for paper manufacturing comprising delignifying and bleaching chemical pulp which has been treated by cooking by simultaneous use of chlorine dioxide, a peroxide, and at least one reaction catalyst selected from the group consisting of oxoacids of elements of Groups IV, V and VI and salts of these acids. Formation of organic chlorine compounds as by-products is suppressed by decreasing the amount of chlorine dioxide used in the ECF bleaching process in the first stage, and thus environmental toxicity in the waste water discharged from the bleaching process is decreased. Chemical pulp having a high degree of brightness is economically produced because increase in the production capacity is not required at all or suppressed to the minimum, and the investment cost is reduced to the minimum when the bleaching with chlorine in the first stage is converted into the bleaching with chlorine dioxide which is an ECF bleaching process.
摘要翻译：一种漂白用于造纸的化学纸浆的方法，包括脱木素和漂白化学纸浆，其已经通过同时使用二氧化氯，过氧化物和至少一种选自以下组中的至少一种反应催化剂进行烹饪来处理，所述反应催化剂选自IV族元素的含氧酸， V和VI以及这些酸的盐。作为副产物的有机氯化合物的形成通过减少在第一阶段的ECF漂白过程中使用的二氧化氯的量来抑制，因此从漂白过程排出的废水中的环境毒性降低。经济地制造具有高亮度的化学纸浆，因为生产能力的增加根本不需要或被抑制到最低限度，并且当将第一阶段的氯漂白转化为用作为ECF漂白工艺的二氧化氯漂白。

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