煤矿安全2019，Vol.50Issue(9)：46-50,5.DOI:10.13347/j.cnki.mkaq.2019.09.013
阻燃剂甲基膦酸二甲酯对褐煤的阻燃效果研究
Study on Flame Retardant Effect of Dimethyl Methylphosphonate on Lignite Coal
摘要
Abstract
In order to study the effect of organophosphorus dimethyl methylphosphonate ester on coal spontaneous combustion characteristics, select the Doren lignite coal sample as the experimental coal sample, and thermogravimetric experiments were carried out using the combination of temperature-gas chromatograph and STA-449C synchronous thermal analyzer. The calculation model of the volume fraction generated by CO and the temperature of coal body in the process of simulating the spontaneous combustion heating of coal by comparing four kinds of resistance agents with different concentrations was studied. The activation energy was obtained by fitting, and the flame retardant effects of different concentrations of flame retardants were analyzed by combining the results of thermogravimetric experiments. The results show that the CO release rate of coal samples with 20%dimethyl methylphosphonate ester is the minimum during the heating process, and in the process of coal spontaneous combustion, the best inhibiting effect on coal is achieved. Moreover, E value of activation energy of the inhibitor with a concentration of 20%was the largest, with the best inhibiting effect and the most difficult spontaneous combustion.关键词
煤自燃/阻化剂/活化能/有机磷/CO体积分数Key words
coal spontaneous combustion/inhibitor agent/activation energy/organic phosphorus/CO volume fraction分类
矿业与冶金引用本文复制引用
王福生,寇雅芳,董宪伟,侯欣然..阻燃剂甲基膦酸二甲酯对褐煤的阻燃效果研究[J].煤矿安全,2019,50(9):46-50,5.基金项目
国家自然科学基金资助项目(51474086) （51474086）
河北省自然科学基金资助项目(E2014209138) （E2014209138）
