辽宁工程技术大学学报（自然科学版）2017，Vol.36Issue(8)：796-800,5.DOI:10.11956/j.issn.1008-0562.2017.08.003
不同变质程度煤尘云最小点火能试验研究
Experimental study on coal dust cloud minimum ignition energy of different metamorphic grade
摘要
Abstract
To study the E characteristics and its influencing factors of different metamorphism,seven kinds of different kinds of coal dust are selected,Hartmann tube test systems is used,and the E values under different c,t and P are tested.The result shows that there are significant limits among E values of different metamorphic grade,and the higher the grade,the greater the E.Under the condition of same particle size,ignition oxidation speed is limited,so the optimum ignition mass concentration decreases with increasing metamorphic grade.With increasing of t,E shows an upward trend after the first fall,and the optimum ignition delay time is about 1 s.t plays a more important role on E of lignite than c.Relationship curve of anthracite between P and E is "funnel-shaped",optimum dusting pressure decreases with decreasing metamorphic grade.Mathematical model of E is established under the coupling condition of c,t and P.Based on this,the optimum testing condition (c,t,P) is determined with considering of more factor relevant,which is more close to the real situation.关键词
煤尘云/最小点火能/变质程度/粉尘质量浓度/延迟时间Key words
coal dust cloud/minimum ignition energy/metamorphic grade/dust mass concentration/delay time分类
资源环境引用本文复制引用
李雨成,刘天奇,周磊..不同变质程度煤尘云最小点火能试验研究[J].辽宁工程技术大学学报（自然科学版）,2017,36(8):796-800,5.基金项目
国家自然科学基金(51204089) （51204089）
辽宁省教育厅科研项目(L2014131) （L2014131）
辽宁省自然科学基金(201602355) （201602355）
