| 碱-氧-蒽醌蒸煮麦草脱木素 |
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| 引用本文： | 张建安,刘德华,张小勇,韩润林,李佐虎. 碱-氧-蒽醌蒸煮麦草脱木素[J]. 化工学报, 2001, 52(10): 916-920 |
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| 作者姓名： | 张建安 刘德华 张小勇 韩润林 李佐虎 |
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| 作者单位： | 清华大学化学工程系; 中国科学院过程工程研究所 |
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| 摘 要： | 引 言木素、纤维素和半纤维素是构成麦草的主要成分 ,是自然界中较为丰富的可再生资源 .木素在制浆造纸过程中生成碱木素 ,溶于黑液 ,排入江河后 ,不仅污染了环境 ,而且浪费了大量的木素资源 ,因此寻求对可再生资源的工业化应用途径越来越受到人们的重视 .通常 ,脱木素的方法有亚硫酸盐法和碱法 ,后来许多研究者对其进行了改进 ,不过这些研究的目是为了提高纸浆得率 ,在不破坏纤维素的条件下得到白度好、易漂白、易成浆的纸浆 ,这些方法只考虑了对纤维素进行造纸的利用 ,而没有考虑对纤维素的其他利用途径以及对木素资源的利用[1～ 8] .纤…
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| 关 键 词： | 麦草 碱－氧－蒽醌 脱木素 蒸煮 纸浆 造纸工业 资源利用 |
| 文章编号： | 0438-1157(2001)10-0916-05 |
| 修稿时间： | 2000-10-13 |
DELIGNIFICATION OF WHEAT STRAW BYNaOH-O2-ANTHRAQUINONE COOKING |
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| ZHANG Jian''an,LIU Dehua,ZHANG Xiaoyong,HAN Runlin,LI Zuohu. DELIGNIFICATION OF WHEAT STRAW BYNaOH-O2-ANTHRAQUINONE COOKING[J]. Journal of Chemical Industry and Engineering(China), 2001, 52(10): 916-920 |
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| Authors: | ZHANG Jian''an LIU Dehua ZHANG Xiaoyong HAN Runlin LI Zuohu |
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| Abstract: | The delignification of wheat straw by alkali-oxygen-anthraquinone cooking was studied.The results showed that when temperature was 140℃,anthraquinone was 0.6%, the concentration of NaOH was 6%,the pressure of oxygen was 0.8 MPa,the ratio of solid(wheat straw) to liquid was 0.13, the rate of delignification and lignin in cellulose were 88% and 2.2%, respectively.The structures of lignin analyzed by means of IR and GC-MS spectrum indicated that there were syringyl and guaiacyl in lignin and the macro-molecules of lignin were changed into micro-molecules of lignin after cooking. |
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| Keywords: | wheat straw oxygen-alkali-anthraquinone delignification |
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