Acta Scientiarum Naturalium Universitatis Pekinensis ›› 2020, Vol. 56 ›› Issue (6): 975-982.DOI: 10.13209/j.0479-8023.2020.030

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Preparation and Pyrolysis Kinetics of Phenolic Resins of Main Phenols in Semi-coking Wastewater

WANG Yali, WANG Yufei, LI Jian, PENG Jiajia, CAO Shuai, YAN Long   

  1. School of Chemistry and Chemical Engineering, Yulin University, Yulin 719000
  • Received:2019-11-22 Revised:2020-01-07 Online:2020-11-20 Published:2020-11-20
  • Contact: WANG Yali, E-mail: yaw32(at)yulinu.edu.cn; YAN Long, E-mail: 175526421(at)qq.com

兰炭废水主要酚类制备酚醛树脂及热解动力学研究

王亚俐†, 王玉飞, 李键, 彭佳佳, 曹帅, 闫龙†   

  1. 榆林学院化学与化工学院, 榆林 719000
  • 通讯作者: 王亚俐, E-mail: yaw32(at)yulinu.edu.cn; 闫龙, E-mail: 175526421(at)qq.com
  • 基金资助:
    国家自然科学基金(21663034)和榆林学院博士科研启动基金(18GK26)资助

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Abstract:

The composition and concentration of organic compounds in semi-coking wastewater were determined by GC-MS. The mixtures of a few of the five most representative phenolic substances (phenol, m-cresol, 2,3-dimethylphenol, catechol and 2,6-dimethylphenol) were utilized to simulate semi-coking wastewater. Phenolic resins in the simulated semi-coking wastewater were prepared in the presence of formaldehyde. The phenolic resins were characterized by in-situ infrared and thermal analysis. The pyrolysis kinetic parameters obtained from analyzing thermogravimetric analysis data indicated that a mixture of phenolic compounds had higher crosslinking degree and the phenolic resin was more stable. This study provides a theoretical basis for optimizing of semicoking wastewater treatment by utilizing formaldehyde.

Key words: semi-coking water, phenolic compounds, phenolic resins, pyrolysis kinetics

摘要：

使用GC-MS测定兰炭废水中有机物的成分及含量, 然后用兰炭废水中最具代表性的 5 种酚类物质(苯酚、间甲酚、2,3-二甲基苯酚、邻苯二酚和2,6-二甲基苯酚)组成的单酚或混合酚模拟兰炭废水, 在甲醛存在条件下制备酚醛树脂。通过对制备的酚醛树脂进行原位红外表征及热分析表征检测, 从热重分析数据获得热解动力学参数。结果表明, 混合酚的交联度更高, 酚醛树脂更稳定。研究结果可为优化甲醛法处理兰炭废水提供理论依据。

关键词: 兰炭废水, 酚类物质, 酚醛树脂, 热解动力学

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