| 两段氧脱木素的段间DMD活化处理 |
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| 引用本文： | 黄干强,韩克涛,伍红.两段氧脱木素的段间DMD活化处理[J].中国造纸,1999,18(2):5-9. |
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| 作者姓名： | 黄干强 韩克涛 伍红 |
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| 作者单位： | 华南理工大学制浆造纸工程国家重点实验室 |
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| 基金项目： | 国家自然科学基金,广东省自然科学基金 |
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| 摘 要： | 氧脱木素率一般不超过５０％，利用段间活化处理可以提高脱木素率。采用二甲基二环氧乙烷的段间活化处理，整个脱木素率达８８％以上。
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| 关 键 词： | 氧脱木素 选择性 段间处理 |
| 修稿时间： | 1998-07-10 |
Dimethyldioxirane as Interstage Treatment in Two stage Oxygen Delignification |
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| Huang Ganqiang,Han Ketao,Wu Hong.Dimethyldioxirane as Interstage Treatment in Two stage Oxygen Delignification[J].China Pulp & Paper,1999,18(2):5-9. |
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| Authors: | Huang Ganqiang Han Ketao Wu Hong |
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| Abstract: | Only half of the lignin in kraft pulps can be removed
by oxygen delignification before serious strength losses occur.Dimethyldiozirane(T)was tested
as the interstage treatment preceding the second oxygen stage in an OTO sequence,the results
were compared to an OCO sequence.Lab.studies have shown that overall delignification
selectivity of Masson's pine kraft pulp can be improved with 1% AO interstage treatment in two
stage oxygen delignification.Over 88% lignin removal can be achieved by using this
nonchlorine OTO sequence.As an interstage treatment,dimethyldioxirane shows a greater
brightness gain per kappa unit reduction.Acetone of effuent from T stage can be recovered by a
distillation. |
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| Keywords: | oxygen delignification selectivity interstage treatment |
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