中国造纸2026，Vol.45Issue(6)：165-169,5.DOI:10.11980/j.issn.0254-508X.2026.06.018
硫酸盐法制浆漂前洗涤效率的改进实践
Improvement Practice of Pre-bleaching Washing Efficiency in Sulfate Pulping
孟祥岩 1杨泽广 1郭彩虹 1刘天勇 1杜彦护 1张庆伟1
作者信息
- 1. 海南金海浆纸业有限公司,海南洋浦,578101
- 折叠
摘要
Abstract
To address the production challenges of high COD and significant alkali loss in the pulp of the sulfate pulp production line,this paper systematically analyzed the mechanisms underlying multiple adverse factors,including capacity expansion,water supply constraints,and fluctuations in raw material composition,tailor-made and implemented comprehensive process optimization and improvement measures.By installing baffles on the twin-roll pulp washer,the discharge concentration of the washed pulp was effectively increased.Replacing the ex-isting pulp washing equipment in the oxygen bleaching section with a high-efficiency drum displacement pulp washer had significantly im-proved pulp washing efficiency and cleanliness.Optimizing the gas condensation system at the rear end of the oxygen bleaching section had resolved the issue of poor washing performance under high-temperature mist conditions.Additionally,the condensate water from the evapora-tion system was recycled for use as process wash water,and circular wood chip piles were established to stabilize the raw material composi-tion.After the process optimization and upgrading,the pulp concentration at the production line increased by approximately 5%,and the al-kali loss in the pulp decreased by 4.25 kg/adt.The production results indicated that the aforementioned comprehensive improvement mea-sures could effectively reduce the COD of the pulp entering the D0 bleaching stage,decrease the amount of bleaching chemicals and sodium sulfate required,and significantly lower production costs.关键词
硫酸盐制浆/洗涤效率/COD/碱损Key words
sulfate pulping/washing efficiency/COD/alkali loss分类
轻工纺织引用本文复制引用
孟祥岩,杨泽广,郭彩虹,刘天勇,杜彦护,张庆伟..硫酸盐法制浆漂前洗涤效率的改进实践[J].中国造纸,2026,45(6):165-169,5.
