牛俊天,乔晓磊,余欣月,杨丽,刘海玉,樊保国,金燕
NIU Juntian,QIAO Xiaolei,YU Xinyue,YANG Li,LIU Haiyu,FAN Baoguo,JIN Yan

• 1:太原理工大学电气与动力工程学院

摘要(Abstract)：

国内外缺乏有效手段对废弃的热固性塑料进行回收利用，大部分只能填埋或焚烧处理，不仅占用大量土地资源，且由于含有多种有害物质，通常造成二次污染，若以废弃酚醛塑料为黏结剂，可达到废弃物资源化利用的目的。同时，酚醛塑料以酚醛树脂为基体，结构中含有大量苯环，具有较大的交联密度，作为活性焦黏结剂具有可行性。因此以酚醛塑料作为黏结剂，褐煤、焦煤为原料煤制备成型活性焦，通过FTIR和氮气吸附脱附法等表征手段探究了酚醛塑料含量和活化温度对活性焦性能的影响。结果表明，随酚醛塑料含量增加，活性焦强度增强，而碱性官能团含量和比表面积均减小，其质量分数为20%时，活性焦的耐压强度和耐磨强度达到国家优级品标准，比表面积262 m~2/g、硫容可达9.88 mg/g,高于工业焦硫容。随活化温度升高，活性焦碱性官能团含量及比表面积先增大后减小，活化温度为800℃时碱性官能团含量和比表面积最大，活性焦表面C—C及C与其他原子之间连接方式发生改变，芳香环不断压缩，侧链支链减少，活化效果明显，此时硫容最大，具有最佳脱硫性能。
There is a lack of effective means to recycle waste thermosetting plastics at home and abroad, and most of them can only be landfilled or incinerated, which not only occupies a large amount of land resources, but also causes re-pollution due to a variety of harmful substances. If waste phenolic plastic is used as binder, the purpose of waste resource utilization can be achieved. At the same time, phenolic plastic is based on phenolic resin, which contains a large number of benzene rings in its structure and has a large cross-linking density, so it is feasible to use it as an active coke binder. In addition, phenolic plastic was prepared as binder and activated coke was made from lignite and charred coal, and the effects of phenolic plastic content and activation temperature on the performance of activated coke were explored by FTIR and N_2 adsorption/desorption. The results show that with the increase of the content of phenolic plastics, the strength of activated coke is enhanced, while both the basic functional group content and the specific surface area are decreased. When the content of phenolic plastics is 20%, pressure resistance strength and wear resistance strength of activated coke can meet the national high-grade standards. Meanwhile, the specific surface area of activated coke reaches to 262 m~2/g and sulfur capacity reaches to 9.88 mg/g, which is higher than that of industrial coke. With the increase of the activation temperature, the content of basic functional group and specific surface of activated coke area firstly increases and then decreases. When the activation temperature reaches to 800 ℃, the content of basic functional group and specific surface area reach to the maximum, the connection way between activated coke C—C and C with other atoms of surface has changed, aromatic ring is continuously compressed, side and branched chain is decreased, the activation effect is obvious. At this time, the sulfur capacity is the largest, and the desulfurization performance is the best.

关键词(KeyWords)： 酚醛塑料;活性焦;微观结构;硫容
phenolic plastics;activated coke;microstructure;sulfur content

Abstract:

Keywords:

基金项目(Foundation): 山西省重点研发计划资助项目(201903D321075);; 山西省留学人员科技活动择优资助项目(20200016)

作者(Author): 牛俊天,乔晓磊,余欣月,杨丽,刘海玉,樊保国,金燕
NIU Juntian,QIAO Xiaolei,YU Xinyue,YANG Li,LIU Haiyu,FAN Baoguo,JIN Yan

DOI: 10.13226/j.issn.1006-6772.21122902

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