低阶煤微波辅助催化热解焦油特性研究_中国煤炭行业知识服务平台

低阶煤微波辅助催化热解焦油特性研究

Title

Study on characteristics of tar from low-rank coal viamicrowave-assisted catalytic pyrolysis
作者

脱凯用王卓雅蒋本杰王莉萍陈钢刘淑琴
Author

TUO Kaiyong,WANG Zhuoya,JIANG Benjie,WANG Liping,CHEN Gang,LIU Shuqin
单位

中国矿业大学（北京）化学与环境工程学院山西高碳能源低碳化利用研究设计院有限公司
Organization

1.School of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing), Beijing ,China;2.Shangxi High Carbon Energy Low Carbon Utilization Research and Design Institute Co. ,Ltd. ,Taiyuan , China
摘要

为提升低阶煤热解焦油产品的品质，在微波管式热解炉内，考察了K、Ca和Fe对煤热解焦油生成特性的影响，研究了不同焦油产品的族组分分布和芳香烃组成结构的变化规律。结果表明：负载K、Ca和Fe的煤样会快速响应微波产生极化损耗和电导损耗，使得活性组分周围被选择性加热因而诱发焦油催化裂解反应进行。微波辅助金属组分可催化调节焦油族组分分布，K、Fe使苯及其衍生物含量分别增加了12.8%和25.15%，Ca使脂肪烃含量显著增加了212%。K、Ca和Fe显著促进了三环、四环芳烃的开环裂解并使得四环以上芳烃几乎消失，其中Fe可将三环芳烃芴、苊和菲及其衍生物含量分别降低62.68%，67.25%和58.33%，表明微波辅助金属组分改变了重质芳烃的裂解途径，促进了焦油产品的轻质化。
Abstract

In order to improve the quality of tar products from low-rank coal,the effects of K,Ca and Fe on the formation characteristics of tar from coal catalytic pyrolysis were investigated in a microwave tube prolysis furnace.The distribution of group components and the changing law of composition of aromatic hydrocarbons in different tar products were studied. The results showed that the coal samples loaded with K,Ca and Fe quickly responded to the polarization loss and conductance loss of the microwave,so that the active component was selectively heated to induce the catalytic cracking reaction of the tar.Microwave-assisted metal components could catalyze the distribution of tar component groups.K and Fe increased the content of benzene and its derivatives by 12.8% and 25.15% respectively,and Ca significantly increased the aliphatic hydrocarbon content by 212%.K, Ca and Fe significantly promoted the ring-opening cracking reaction of tricyclic and tetracyclic aromatic hydrocarbons and made the aromatics above four rings almost disappear. Among them, Fe reduced the content of tricyclic aromatic hydrocarbons fluorene, osmium, phenanthrene and their derivatives by 62.68%, 67.25% and 58.33%, indicating that the microwave-assisted metal components could change the cracking pathway of heavy aromatics and improve the quality of tar products.
关键词

低阶煤催化热解微波加热煤焦油
KeyWords

low-rank coal; catalytic pyrolysis; microwave heating;coal tar
基金项目(Foundation)

中央高校科研业务专项资金资助项目（2009QH13）；大学生创新创业资助项目（C201703323）
相关文章

[1]低阶煤微波辅助热提质研究进展
[2]四种低阶煤中多环芳烃的分布特征
[3]煤炭微波热解技术研究进展
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