| 马尾松化学预热机械浆镁碱过氧化氢漂白 |
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| 引用本文： | 胡可信,黄俊,刘艳新,陈启杰,余聪.马尾松化学预热机械浆镁碱过氧化氢漂白[J].长沙理工大学学报(自然科学版),2009,6(2):83-87. |
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| 作者姓名： | 胡可信 黄俊 刘艳新 陈启杰 余聪 |
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| 作者单位： | 长沙理工大学,化学与生物工程学院,湖南,长沙,410004 |
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| 基金项目： | 湖南省自然科学基金，湖南省教育厅科研项目 |
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| 摘 要： | 研究了用镁碱代替钠碱的马尾松化学预热机械浆（CTMP）浆过氧化氢漂白工艺及其对纸浆性能的影响,分析了镁碱和钠碱过氧化氢漂白废液对环境的影响.试验结果表明,马尾松CTMP浆镁碱漂白过氧化氢的最佳漂白工艺条件为：H2O2体积浓度为4%,Mg（OH）2质量浓度为1.2%,Na2SiO3质量浓度为1.5%、漂白温度为80℃、漂白时间为120 min,其白度可至63.5%（ISO）,而经钠碱漂白后纸浆的白度值为61.4%（ISO）.镁碱过氧化氢漂白废液化学耗氧量（CODcr）为193.6 g/L,比钠碱过氧化氢漂白废液化学耗氧量（CODcr=312.86 g/L）降低了38.12%.
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| 关 键 词： | 马尾松 化学预热机械浆 H2O2漂白 白度 物理性能 |
Magnesium-based alkalis for hydrogen peroxide bleaching of masson pine CTMP |
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| HU Ke-xin,HUANG Jun,LIU Yan-xin,CHEN Qi-jie,YU Cong.Magnesium-based alkalis for hydrogen peroxide bleaching of masson pine CTMP[J].Journal of Changsha University of Science and Technology:Natural Science,2009,6(2):83-87. |
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| Authors: | HU Ke-xin HUANG Jun LIU Yan-xin CHEN Qi-jie YU Cong |
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| Institution: | School of Chemical and Biological Engineering;Changsha University ofScience and Technology;Changsha 410004;China |
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| Abstract: | Magnesium-based alkalis for hydrogen peroxide bleaching of chemithermomechanical pulp from masson pine are investigated. The results show that the optimum conditions for magnesium-based alkalis for hydrogen peroxide bleaching of masson pine CTMP are as follows, hydrogen peroxide concentration 4 %, Mg （OH）2 concentration 1. 2 %, Na2SiO3 concentration 1.5%, time 120 min, temperature 80 ℃. Under the optimum conditions, the brightness of bleached pulp would reach 63. 5% （ISO）, while the brightness of pulp bleached by using the NaOH as alkali is only 61.4M （ISO）. Compared with NaOH-based bleaching, the CODe, of effluent from bleaching process is cut down by 38. 12% in Mg （OH）2-based hydrogen peroxide bleaching. |
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| Keywords: | masson pine chemithermomechanical pulp peroxide bleaching brightness physical strength |
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