编号
zgly0000332947
文献类型
期刊论文
文献题名
STUDY ON THE ELEMENTAL CHLORINE FREE BLEACHING OF BAMBOO KRAFT PULP
学科分类
220.5570;林产化学加工学
作者
ChengrongQin
HuaiyuZhan
BingyunLi
JiriBasta
ThomasGreschiri
作者单位
StateKeyLabofPulpandPaperEngineering
母体文献
天津科技大学学报
年卷期
2004,19(A02)
页码
281-284
年份
2004
分类号
TS745
关键词
竹牛皮纸纸浆
螯合作用
过氧化氢漂白
DQP
污染
文摘内容
The influential factors of DQP bleaching, chlorine dioxide bleaching, chelation and hydrogen peroxide bleaching, of bamboo kraft pulp were studied. The pH value in D stage, dosage of EDTA in Q stage and charge of MgSO4 in P stage were optimized. The results indicated that good results of chlorine dioxide bleaching were obtained under the conditions of C1O2 2.0% ,pH 4, and the highest final brightness (86.4% ISO) and the lowest final Kappa number(1.37) were attained when the charge of EDTA in Q stage was 0.4%, charge of MgSO4 in P stage was 0.2%, and the other conditions of P stage : pulp consistency 10%, H2O2 charge 2.5%, Na)H charge 1.4%, temperature 90℃ and time 120 min. A comparison of bleaching results, pulp strength and effluent characteristics of bamboo kraft pulp between DQP and CEH sequences was done. The results indicated that bamboo kraft pulp could be bleached to brightness of above 83% ISO by both DQP andCEH sequences. Compared with CEH bleached pulp, DQP bleached pulp had slightly lower brightness, better brightness stability, higher pulp viscosity, better strength properties and lower pollution loads。