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生物质化学工程 ›› 2014, Vol. 48 ›› Issue (6): 1-5.doi: 10.3969/j.issn.1673-5854.2014.06.001

• 研究报告 •    下一篇

甘蔗渣在水与四氢萘混合溶剂中的液化工艺优化实验

操江飞, 李存龙, 谢宁, 周欣欣, 洪亚明, 李志霞   

  1. 广西大学 化学化工学院, 广西 南宁 530004
  • 收稿日期:2014-07-04 出版日期:2014-11-30 发布日期:2014-12-10
  • 通讯作者: 李志霞, 女, 教授, 博士, 硕士生导师, 主要从事新能源化工及生物材料的研发工作;E-mail: zhixiali@hotmail.com. E-mail:zhixiali@hotmail.com
  • 作者简介:操江飞(1989-), 男, 安徽安庆人, 硕士生, 从事能源化工研究;E-mail:jiangfei1989@yeah.net
  • 基金资助:
    国家自然科学基金资助项目(21266002);广西自然科学基金(2013GXNSFFA019005);广西大学科研基金(XGZ120081);广西高校2014-2015大学生创新创业训练计划项目资助 (No.53)

Optimization of Liquefaction Technology of Bagasse in Water-tetralin Mixed Solvents

CAO Jiang-fei, LI Cun-long, XIE Ning, ZHOU Xin-xin, HONG Ya-ming, LI Zhi-xia   

  1. School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
  • Received:2014-07-04 Online:2014-11-30 Published:2014-12-10

摘要: 通过正交试验考察了蔗渣在水与四氢萘混合溶剂中液化过程的5个因素对蔗渣转化率的影响.蔗渣在混合溶剂中的优化工艺为:反应温度270 ℃、反应时间30 min、固液比(蔗渣与溶剂质量比)1:6、碱浸预处理NaOH用量4%、四氢萘用量(占总溶剂质量分数)50%.各因素的影响次序:NaOH用量>反应温度>四氢萘用量>固液比>反应时间.在此工艺条件下,蔗渣转化率可达到97.9%.实验结果表明,四氢萘部分取代液化溶剂中的水,可以有效提高蔗渣液化效率,同时降低反应温度及压力,促进实验操作条件的改善.

关键词: 正交试验, 甘蔗渣, 液化工艺, 水-四氢萘混合溶剂

Abstract: The effects of five factors on conversion rate during the liquefaction of bagasse in water-tetralin (W-T) mixed solvents were investigated by orthogonal test.The optimal conditions were reaction temperature 270 ℃, reaction time 30 min,mass ratio of bagasse to solvent 1:6,NaOH dosage in alkali-soaking pretreatment 4%, and tetralin dosage 50%(mass fraction in the total solvent). The sequence of influence factors was NaOH dosage>reaction temperature>tetralin dosage>mass ratio of bagasse to solvent>reaction time.The conversion rate of bagasse was 97.9% under the optimal conditions.The results also showed that partial substitute for water with tetralin in liquefaction solvents could increase liquefaction efficiency,reduce reaction temperature and pressure,and improve experimental operating condition.

Key words: orthogonal test, bagasse, liquefaction, water-tetralin mixed solvents

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