燃烧反应过程中胜利脱灰褐煤微结构演变特性研究

发布时间：2018-05-23 20:51

本文选题：胜利褐煤 + 煤自燃　；参考：《燃料化学学报》2017年12期

【摘要】：对胜利脱灰褐煤的燃烧反应性进行了测试,并利用FT-IR、XPS、XRD和Raman等对不同条件下的未反应残留物进行了表征,以分析胜利脱灰褐煤在燃烧过程中微结构演变特性。结果表明,在燃烧反应过程中,煤样的脂肪族官能团不断消耗,碳氧官能团和芳烃骨架的消耗与生成交替进行,褐煤表面C-C/C-H键合结构所占比例先增加后减少,碳-氧键合结构所占比例先减小后增加,未反应残留物的芳香度不断升高,褐煤的石墨缺陷指数先增加后降低,而脂肪族侧链指数则呈现先减少后增加的变化规律,表明随着燃烧反应进行对褐煤未反应残留物的石墨化程度逐渐提高,特别是在燃烧反应后期,石墨化程度显著提高。
[Abstract]:The combustion reactivity of Shengli descaling lignite was tested, and the unreacted residues under different conditions were characterized by FT-IRN XPS XRD and Raman in order to analyze the microstructure evolution characteristics of Shengli descaling lignite during combustion. The results showed that during the combustion reaction, the aliphatic functional groups of coal samples were continuously consumed, the consumption and formation of carbon oxygen functional groups and aromatics skeleton were alternately carried out, and the proportion of C-C/C-H bonding structure on lignite surface increased first and then decreased. The proportion of carbon-oxygen bonding structure decreased first and then increased, the aromaticity of unreacted residues increased, the graphite defect index of lignite first increased and then decreased, while the aliphatic side chain index decreased first and then increased. The results showed that the graphitization degree of unreacted residues of lignite was gradually increased with the combustion reaction, especially in the late stage of combustion reaction.
【作者单位】：内蒙古工业大学化工学院内蒙古自治区低阶碳质资源高值化利用重点实验室;
【基金】：国家自然科学基金(21676149,21606134,21566029,21566028,21266017,21766023) 内蒙古自然科学基金(2014MS0220,2015BS0206,2016BS0204,2017MS0201) 内蒙古科技计划内蒙古科技引导奖励基金内蒙古自治区重大基础研究开放课题资助~~
【分类号】：TD849.2

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