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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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煤及其拔头半焦的燃烧反应特性研究
, PP. 513-518
Keywords: 粒径,燃烧,着火点,热重分析
Abstract:
？采用热天平研究了贵州褐煤、三江原煤及其拔头半焦的燃烧行为,考察了粒径和升温速率对样品着火点和燃烧稳定性的影响。减小样品的粒径可显著降低样品的着火点,改善样品的燃烧性能,在粒径100～120目和升温速率25℃/min下,样品的燃烧稳定性最好。根据coats-redfern方法求解燃烧反应动力学参数。燃烧反应动力学分析表明,三种样品的热天平燃烧反应均为一级反应,并得到了实验样品的燃烧反应动力学参数,表观活化能e和指前因子a。贵州褐煤的活化能为100.0～163.6kj/mol,三江原煤的活化能为73.4～161.2kj/mol,三江煤焦的活化能为68.3～178.1kj/mol。
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