汉麻浆全无氯漂白工艺研究  

The Study of TCF Bleaching T Technology for Hemp Pulp

作　　者：张瑞霞[1] 刘秋娟[1] 刘英政 李静[1] 胡勤勇[2] 葛敬云[2] Zhang Ruixia;Liu Qiujuan;Liu Yingzheng;Li Jing;Hu Qinyong;Ge Jingyun(Tianjin Key Laboratory of Pulp and Paper,Tianjin University of Science&Technology,Tianjin 300457,China;Mudanjiang Hengfeng Paper Co.,Ltd.,Mudanjiang,Heilongjiang 157020,China)

机构地区：[1]天津科技大学,天津市制浆造纸重点实验室,天津300457 [2]牡丹江恒丰纸业股份有限公司,黑龙江牡丹江157020

出　　处：《中华纸业》2023年第22期14-19,共6页China Pulp & Paper Industry

基　　金：黑龙江省重点研发计划项目(GA21A110)。

摘　　要：用于生产卷烟纸的汉麻麻皮纤维含量高、易漂白,但是残留在麻皮中的麻秆木素含量高,不易漂白,在全无氯漂白中会产生纤维性尘埃。本文研究了“高温高p H值下H2O2强化的碱抽提(Ep)-螯合预处理(Q)一段H2O2漂白(P1)二段H2O2漂白(P2)”四段漂白技术用于汉麻浆漂白的可行性,发现白度可以达到85%以上,但是无法彻底解决由麻秆产生的尘埃问题。在P1段加入乙酸使之变为乙酸和H2O2混合漂白(A P),将漂白工艺改良为Ep(A P)P三段漂白工艺的实验结果显示,可以彻底解决由麻秆产生的尘埃问题,且纸浆白度可达到88%以上。此工艺方案无需利用特殊漂白设备,采用现有的CE M P等含氯漂白工艺设备即可实现,为目前麻浆厂漂白工段升级改造成全无氯漂白提供了有效的方法。The hemp bark used to produce cigarette paper is high in cellulose content and easy to bleach,but the hemp core left in the bark is high in lignin content and difficult to bleach,so the fibrous dust will be generated during TCF bleaching of hemp pulp.The possibility of Ep(Alkali extraction enhanced by hydrogen peroxide at high temperature and high pH),Q(chelation pre-treatment),P1(The first stage hydrogen peroxide bleaching),P2(The second stage hydrogen peroxide bleaching)for hemp bleaching was studied.And it was found that the whiteness can reach more than 85%,but it cannot completely clear the dirt generated by hemp core.Adding acetic acid in P1 section(named AP)and the bleaching process of Ep(AP)P were discussed,and it was found that:not only the dirt problem can be completely solved,but also the whiteness of pulp can reach more than 88%.This bleaching process can be realized by using existing chlorine-containing bleaching process equipment such as CEMP without the use of special bleaching equipment.It provides an effective method for upgrading the bleaching section of the hemp pulp mill to total chlorine-free bleaching.

关 键 词：汉麻浆 麻秆 漂白 H2O2 乙酸 

分 类 号：TS745[轻工技术与工程—制浆造纸工程] TS749.4TS721.4