氢氧化镁用于杨木KP浆D_1EpD_2漂白的研究  

The Research of Magnesium Hydroxide Application in Poplar KP D_1EpD_2 Bleaching Process

作　　者：张红丹[1] 孔凡功[2] 武书彬[1] 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广东广州510640 [2]山东轻工业学院制浆造纸科学与技术教育部重点实验室,山东济南250353

出　　处：《造纸科学与技术》2011年第3期22-24,共3页Paper Science & Technology

基　　金：山东省自然科学基金(ZR2010C0004);山东省科技攻关计划(2010GXF10625)项目

摘　　要：本文对Mg(OH)2用于杨木硫酸盐浆D1EpD2漂白的可行性进行探讨。分析了Mg(OH)2与NaOH用于D1EpD2漂白后纸浆性能差异,并得出Mg(OH)2用于漂白的最优工艺条件。研究表明,在Ep段中使用Mg(OH)2作为碱源,与传统的NaOH为碱源的碱抽提相比,处理后纸浆白度相当,强度指标虽略有下降,但是漂液中CODCr值下降了50%以上,且消耗较少的H2O2。D2段漂白时,与常规NaOH为控制剂的D2段漂白相比,均在初始pH为4.0时具有最佳漂白效果,且漂后纸浆白度较高,并有较高的撕裂指数。In this study,poplar kraft pulp was used as raw materials to study magnesium hydroxide application in D1EpD2 bleaching process.The aim is to explore the differences between magnesium hydroxide-based and sodium hydroxide-based D1EpD2 bleaching process,especially in Ep and D2 bleaching stages,and get the best results of magnesium hydroxide-based D1EpD2 bleaching process.The results showed that compared with NaOH-based Ep treatment,the Mg（OH）2-based Ep treatment can lead the pulp to similar brightness,slightly lower strength properties,but the CODCr of the bleaching effluent can reduce more than 50% and consume less hydrogen peroxide.When Mg（OH）2 is used in D2 stage,compared with NaOH-based D2 treatment,better results can be obtained if the original pH is 4.0.It can get better brightness and higher tear index.

关 键 词：MG(OH)2 NAOH 杨木硫酸盐浆 漂白 

分 类 号：TS745[轻工技术与工程—制浆造纸工程]