摘要
对高硅含量的麦草浆的ECF漂白进行了研究,并分析了高硅含量对其漂白性能的影响。研究了浆料在D段经过二氧化氯不同用量和不同温度时的漂白效果,以及P段不同过氧化氢用量时的漂白效果。实验结果表明:当D段二氧化氯用量为0.8%,温度为70℃,P段过氧化氢用量为2.5%时,浆料经DEQP漂白白度可达到84.73%ISO,黏度为576ml/g,灰分含量为6.13%,硅含量为3.11%。对比漂白前后浆料的性质以及显微镜观察硅在浆中存在的状态,证实了漂白后硅以某种形式仍然存在于麦草浆中,且对其漂白性能没有影响。
The study of ECF bleaching for wheat straw with high silica content was carried out. The effects of the high silica content on the bleaching performance were also analyzed. The research was mainly focused on the bleaching effects of the pulp in D stage through various dosage of chlorine dioxide and different bleaching temperature, as well as P stage of different dosage of hydrogen peroxide. Results show that the process with the addition of 0.8% chlorine dioxide in D stage, the temperature 70℃, and 2.5% hydrogen peroxide in P stage, the pulps can be bleached to 84.73%ISO brightness by DEQP sequences. The viscosity is 576 ml/g, ash content is 6.13% and silica content is 3.11% in the bleached pulps. Compared with the pulp properties and the state of the silica cells observed by using optical microscope with the brown pulp, the silica exists in the forms of compounds in the pulp and has no effect on wheat straw pulp bleaching performance.
出处
《中华纸业》
CAS
北大核心
2010年第14期12-14,共3页
China Pulp & Paper Industry
基金
国家自然科学基金项目(20876092)
陕西省自然科学基金项目(SJ08B02)
陕西科技大学博士科研启动基金项目(BJ08-03)
关键词
高硅含量
ECF漂白
麦草
high silicon content
ECF bleaching
wheat straw
作者简介
徐永健，教授，博士，主要从事低污染/溶剂制浆技术和植物纤维资源化研究工作。
