公开(公告)号：US20130269891A1

公开(公告)日：2013-10-17

申请号：US13996597

申请日：2011-12-19

申请人： Douglas W. Reid ,  John Atwood ,  Scott Carmichael ,  Daniel Connell

发明人： Douglas W. Reid ,  John Atwood ,  Scott Carmichael ,  Daniel Connell

IPC分类号： D21C9/14

CPC分类号： D21C9/144 ,  D21C9/1036 ,  D21C9/14 ,  D21C9/142

摘要： The invention is directed to a method for increasing brightness of pulp, wherein the method includes: contacting a pulp slurry with chlorine dioxide in a final D (ClO2) bleaching stage; and adding a brightening additive to the final D bleaching stage after at least a portion of the chlorine dioxide has been consumed, in an amount sufficient to increase brightness of the pulp; wherein the brightening additive is an inorganic compound chosen from hypochlorous acid, one or more precursor compounds that form hypochlorous acid in said final D bleaching stage, or a mixture thereof.

摘要翻译： 本发明涉及一种提高纸浆亮度的方法，其中所述方法包括：在最终的D（ClO 2）漂白阶段使纸浆与二氧化氯接触; 并且在至少一部分二氧化氯已被消耗之后，将其加入到最后的D漂白阶段，其量足以提高纸浆的亮度; 其中所述增亮添加剂是选自次氯酸，在所述最终D漂白阶段中形成次氯酸的一种或多种前体化合物或其混合物的无机化合物。

公开(公告)号：US09057156B2

公开(公告)日：2015-06-16

申请号：US13996597

申请日：2011-12-19

申请人： Douglas W. Reid ,  John Atwood ,  Scott Carmichael ,  Daniel Connell

发明人： Douglas W. Reid ,  John Atwood ,  Scott Carmichael ,  Daniel Connell

IPC分类号： D21C9/14 ,  D21C9/10

CPC分类号： D21C9/144 ,  D21C9/1036 ,  D21C9/14 ,  D21C9/142

摘要： The invention is directed to a method for increasing brightness of pulp, wherein the method includes: contacting a pulp slurry with chlorine dioxide in a final D (ClO2) bleaching stage; and adding a brightening additive to the final D bleaching stage after at least a portion of the chlorine dioxide has been consumed, in an amount sufficient to increase brightness of the pulp; wherein the brightening additive is an inorganic compound chosen from hypochlorous acid, one or more precursor compounds that form hypochlorous acid in said final D bleaching stage, or a mixture thereof.

摘要翻译： 本发明涉及一种提高纸浆亮度的方法，其中所述方法包括：在最终的D（ClO 2）漂白阶段使纸浆与二氧化氯接触; 并且在至少一部分二氧化氯已被消耗之后，将其加入到最后的D漂白阶段，其量足以提高纸浆的亮度; 其中所述增亮添加剂是选自次氯酸，在所述最终D漂白阶段中形成次氯酸的一种或多种前体化合物或其混合物的无机化合物。