BLEACHING OF SOFTWOOD KRAFT PULP WITH OXYGEN AND PEROXIDE

被引：0
|
作者：
Gavrilescu, Dan [1 ]
Puitel, Adrian Catalin [1 ]
机构：
[1] Gheorghe Asachi Tech Univ Iasi, Fac Chem Engn & Environm Protect, Dept Nat & Synthet Polymers, Iasi, Romania
来源：
CELLULOSE CHEMISTRY AND TECHNOLOGY | 2015年 / 49卷 / 3-4期
关键词：
pulp bleaching; oxygen; hydrogen peroxide; DELIGNIFICATION;
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 bleaching of spruce kraft pulp with oxygen and peroxide according to the (OP)-Q-(EOP)-P sequence is investigated. Pulp brightness and properties highly depend on unbleached pulp Kappa number and on the residual lignin content after the EOP stage. At the same time, the final P stage conditions strongly influence the bleaching results. In order to achieve satisfactory pulp brightness, it is necessary to split the chemical charge in the P stage, so that the peroxide is added in two or three consecutive steps. The successive addition of peroxide significantly improves pulp brightness in the P stage.
引用
收藏
页码：341 / 346
页数：6
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