Removal of extractives during TCF bleaching of radiata pine bisulfite pulp

被引：0

作者：

Nelson, PJ ^{[1
]}

Chin, CW ^{[1
]}

Mulcahy, JP ^{[1
]}

机构：

[1] CSIRO, Forestry & Forest Prod, Clayton, Vic 3169, Australia

来源：

APPITA JOURNAL | 1998年 / 51卷 / 04期

关键词：

alkali extraction; bisulfite pulp; bleaching; hydrogen peroxide; oxygen; radiata pine; resin;

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：

Two-stage bleaching of radiata pine bisulfite pulp with totally chlorine free chemicals was studied. A range of alkaline treatments was examined for the first stage. These included extraction with alkali, oxidative extraction, alkaline peroxide and peroxide reinforced oxidative extraction. Peroxide under steep bleaching conditions was used for the second stage. The most practical way of preparing a high brightness pulp with a low content of extractives was by the use of an alkali extraction, followed by washing and then with steep bleaching.

引用

页码：287 / 291

页数：5