天津科技大学学报2004，Vol.19Issue(z2)：281-284,4.
STUDY ON THE ELEMENTAL CHLORINE FREE BLEACHING OF BAMBOO KRAFT PULP
STUDY ON THE ELEMENTAL CHLORINE FREE BLEACHING OF BAMBOO KRAFT PULP
摘要
Abstract
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 ClO2 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%, NaOH 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 and CEH 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.关键词
bamboo kraft pulp/chelation/hydrogen peroxide bleachingKey words
bamboo kraft pulp/chelation/hydrogen peroxide bleaching分类
轻工纺织引用本文复制引用
Chengrong Qin,Huaiyu Zhan,Bingyun Li,Jiri Basta,Thomas Greschiri..STUDY ON THE ELEMENTAL CHLORINE FREE BLEACHING OF BAMBOO KRAFT PULP[J].天津科技大学学报,2004,19(z2):281-284,4.基金项目
The authors are grateful for the financial support of this research from Eka Chemicals, Sweden. （）
