林产化学与工业 ›› 2017, Vol. 37 ›› Issue (6): 35-42.doi: 10.3969/j.issn.0253-2417.2017.06.005
李伟振1,2,3, 姜洋1,2,3, 饶曙4, 阴秀丽1,2,3, 蒋恩臣4
收稿日期:
2017-04-11
出版日期:
2017-12-25
发布日期:
2018-01-05
通讯作者:
姜洋,副研究员,研究领域为生物质能利用技术;E-mail:jiangyang@ms.giec.ac.cn
E-mail:jiangyang@ms.giec.ac.cn
作者简介:
李伟振(1983-),男,河南开封人,助理研究员,硕士,主要从事生物质成型技术研究
基金资助:
LI Weizhen1,2,3, JIANG Yang1,2,3, RAO Shu4, YIN Xiuli1,2,3, JIANG Enchen4
Received:
2017-04-11
Online:
2017-12-25
Published:
2018-01-05
摘要: 为了研究碱性木质素对玉米秸秆成型特性的影响及其软化黏结作用,以玉米秸秆为原料进行压缩成型,考察添加碱性木质素对成型效果的影响。结果表明:碱性木质素能够促进成型,改善成型效果,当添加量由0提高到20%时,玉米秸秆成型颗粒的松弛密度由1 005 kg/m3增大到1 157 kg/m3,径向最大抗压力由1 353 N增大到1 930 N。采用DSC对玉米秸秆和碱性木质素的热转变特征温度进行了研究,结果表明:玉米秸秆和碱性木质素的玻璃态转变温度分别在92.5~103℃、61~137℃之间;在玻璃态转变过程中,100℃时存在比能耗最低点;100~130℃为碱性木质素起较好黏结作用的温度范围。采用SEM对颗粒微观形态进行观察,发现碱性木质素发生玻璃态转变后在颗粒内部能够形成"局部熔融"和"机械互锁"两种结合形式,适合的碱性木质素添加量为10%~15%。
中图分类号:
李伟振, 姜洋, 饶曙, 阴秀丽, 蒋恩臣. 碱性木质素对玉米秸秆成型特性的影响[J]. 林产化学与工业, 2017, 37(6): 35-42.
LI Weizhen, JIANG Yang, RAO Shu, YIN Xiuli, JIANG Enchen. Effect of Alkali Lignin on Corn Stalk Pelleting Process[J]. Chemistry and Industry of Forest Products, 2017, 37(6): 35-42.
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