煤矿安全2024，Vol.55Issue(2)：99-106,8.DOI:10.13347/j.cnki.mkaq.20230478
硫含量对煤自燃特性的影响实验与模拟研究
Experimental and simulation study on the effect of sulfur content on spontaneous combustion charcateristics of coal
摘要
Abstract
To explore the influence of sulfur content on the spontaneous combustion characteristics of coal and find efficient ways to prevent and control the spontaneous combustion disaster of high sulfur coal,the oxidation processes of typical high sulfur coal and typical low sulfur coal were analyzed using a comprehensive thermal analyzer(TG/DSC)and a programmed heating experimental system.The complexation of commonly used inhibitors,Ca(OH)2,Na2CO3,MgCl2 and two typical organic sulfur structures,diphen-yl sulfide(C12H10S)and benzenethiol(C6H5SH),in high sulfur coal and coal were calculated using quantum chemistry simulation software.The results showed that the mass loss rate during the oxidation process of high sulfur coal was faster,and the heat release was greater.The activation energies of high sulfur coal in the pyrolysis and combustion stages were 9.16%and 15.07%lower than those of low sulfur coal,respectively,indicating a higher tendency to spontaneous combustion.Na+,Mg2+,Ca2+ in the commonly used inhibitors in coal mines can form complexes with diphenyl sulfide and benzenethiol,and the chemical reactivity of the two or-ganic sulfur structures decreases after forming complexes,which can inhibit the spontaneous combustion of coal.关键词
煤自燃特性/煤中硫/特征温度点/有机硫/阻化剂Key words
coal spontaneous combustion charcateristics/sulfur in coal/characteristic temperature point/organic sulfur/inhibitor分类
矿业与冶金引用本文复制引用
刘军见,唐一博,刘洪刚..硫含量对煤自燃特性的影响实验与模拟研究[J].煤矿安全,2024,55(2):99-106,8.基金项目
山西省自然科学基金基础研究计划资助项目(20210302124062) （20210302124062）
山西省留学人员科技活动择优资助项目(20220010) （20220010）
