OXYGEN PULPING OF HARDWOODS.

被引：0

作者：

Fujii, John S.

Hannah, Mark A.

机构：

来源：

| 1978年 / 61卷 / 08期

关键词：

CHEMICAL REACTION - OXYGEN - PULP MATERIALS - Wood;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A process concept based on oxygen-bicarbonate digestion of thin chips, wet combustion liquor recovery, and ozone bleaching is described for fully bleached hardwood pulp. Pulp yield is in the range of 52-55%, and pulp quality, though lower than that of kraft, is probably acceptable for many paper grades in which hardwood pulps are used. The process has a very low pollution potential because it is sulfur- and chlorine-free. Reaction engineering studies have defined the requirements of an oxygen pulping digester using 1-2-mm chips. The most important feature of this digester is high liquor circulation, which supplies adequate and uniformly distributed oxygen for delignification and for temperature control.

引用

页码：37 / 40