烧碱蒽醌麦草浆过氧乙酸漂白  

Peracetic Acid Bleaching of Soda-AQ Wheat-straw Pulp

作　　者：田野[1] 陈嘉川[1] 杨桂花[1] 

机构地区：[1]山东轻工业学院制浆造纸省级重点实验室,山东济南250353

出　　处：《华东纸业》2012年第4期14-17,22,共5页Shanghai Paper Making

摘　　要：使用有机氧化剂过氧乙酸对Soda-AQ麦草浆进行漂白。讨论了单段过氧乙酸漂白烧碱蒽醌麦草浆的影响因素。试验结果表明漂白的最优使用条件为:过氧乙酸用量在3.0%,EDTA用量0.5%,时间80 min,pH维持在6,温度60℃,漂白浆浓12%。在此条件下,成浆的白度(ISO)能够达到53.6%,纸浆黏度为986 mL/g,卡伯值为8.6。通过对过氧乙酸与过氧化氢组成的多段漂研究发现:过氧乙酸的漂白能力强于过氧化氢,且稳定性好;过氧乙酸在过氧化氢前段时,整体漂白效果较好,白度(ISO)可达73.8%。A novel organic oxidant that used peracetic acid as an oxidizer to bleach Soda-AQ straw pulp was studied. The experiment which discussed the factors affecting single bleaching of Soda-AQ straw pulp showed the optimal conditions were as follows： 3.0 % pracetic acid charge, and 0.5 % EDTA charge, 80min, pH value 6, temperature 60 ℃, 12 % of pulp concentration. Under such conditions, the pulp brightness could reach to 53.6 %ISO and the viscosity of the pulp was 986 ml ~ g-l, kappa number was 8.6. The effect of peracetic acid bleaching was better than that of hydrogen peroxide bleaching. When peracetic acid bleaching stage was before peroxide stage, the effect of bleaching was the best and the brightness of bleached pulp reached up to 73.8 %ISO.

关 键 词：Soda—AQ麦草浆 过氧乙酸 漂白 最优条件 白度 

分 类 号：TQ225.122[化学工程—有机化工]