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

页码：341 / 346

页数：6

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