Effect of the acid stage in ECF bleaching on Eucalyptus globulus kraft pulp bleachability amd strength

被引：0
|
作者：
Furtado, FP [1 ]
Evtuguin, DV [1 ]
Gomes, TM [1 ]
机构：
[1] Res Inst Forestry & Paper, RAIZ, P-3800 Aveiro, Portugal
来源：
2000 INTERNATIONAL PULP BLEACHING CONFERENCE, POSTER PRESENTATION | 2000年
关键词：
D O I：
暂无
中图分类号：
TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];
学科分类号：
0805 ; 080502 ; 0822 ;
摘要：
The effect of;tn acidic stage implementation in conventional ECF bleaching sequences (DEDED and ODEDED) of Eucalyptus globulus kraft pulp on the bleachability and strength properties has been investigated. A reduction of 2-3 kappa units achieved in the acid pre-treatment stage resulted in 10-25 % chlorine dioxide savings without substantial losses in the yield (less than 5 %) and basic strength characteristics of fully bleached pulps. The acid pre-treatment showed negative influence on the pulp bleachability with ClO(2) which was explained partially by changes in the residual lignin structure under acidic conditions.
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页码：111 / 114
页数：4
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