漂液的穿透特性对蓝桉CTMP H_2O_2置换漂白的影响  

Effect of Breakthrough Characteristics on Hydrogen Peroxide Displacement Bleaching of E．globulus CTMP

作　　者：李新平[1] 马邕文[2] 陈中豪[2] 

机构地区：[1]西北轻工业学院,陕西咸阳712081 [2]华南理工大学,广州510641

出　　处：《中国造纸》2001年第4期9-12,共4页China Pulp & Paper

基　　金：国家自然科学基金(29806007)

摘　　要：研究了包含穿透曲线、穿透时所用漂液量和漂液穿透时的表观流速等因素在内的穿透特性对单段蓝桉CTMP过氧化氢置换漂白的影响。结果表明：在实验用置换漂白反应器中进行H2O2置换漂白实验时，存在较严重的沟流现象，要用约2倍于浆层中液体的漂液才能基本置换完浆层中的液体；漂液穿透浆层时的表观流速对漂白有较大影响，漂后浆白度和H2O2消耗量都随表观流速增加而下降。The effect of breakthrough characteristics including breakthrough curve，bleach liquor volume and apparent velocity on one stage H2O2 displacement bleaching of E．globulus CTMP was studied． The results showed that the phenomenon of channeling was relatively serious in laboratory displacement bleaching reactor． The volume of bleach liquor using to completely displace the liquor in the pulp pad was about twice as much as the volume of the liquor in the pulp pad． The brightness of bleached pulp and H2O2 consumption decreased along with the increase of apparent velocity．

关 键 词：化学热磨机械浆 H2O2置换漂白 穿透曲线 表观流速 造纸 制浆 漂液 

分 类 号：TS713[轻工技术与工程—制浆造纸工程]