摘要
为分析惰性介质对煤尘升温燃烧的影响,有效预防煤尘自燃,利用微机差热天平和气相色谱仪监测样品质量变化以及升温过程中一氧化碳和二氧化碳的释放量,对比分析惰性介质:水、磷酸二氢铵、碳酸钙对煤尘燃烧的抑制性能,考察单一惰性介质、不同配比的磷酸二氢铵和碳酸钙、不同粒径的磷酸二氢铵对煤尘升温燃烧的抑制效果。研究结果表明:碳酸钙和磷酸二氢铵混合物作为惰性介质,其抑制效果优于水和碳酸钙,但弱于磷酸二氢铵,瞬间爆炸与缓慢氧化过程中惰性介质的效果并不完全相同,混合物对煤尘燃烧无协同抑制作用。随着磷酸二氢铵粒径的减小,抑制性能增强。
The study aims to analyze the effect of inert medium on coal combustion and effectively prevent spontaneous combustion of coal dust.Thermal analyzer and gas chromatograph were used to measure changes of quality and concentration of CO and CO2.The inert mediums are H2O,NH4H2PO4 and Ca CO3.Tests of single inert medium,NH4H2PO4 and Ca CO3 with different proportions and particle sizes on the inhibition of combustion were conducted.The results show that the inhibition effect of NH4H2PO4 and Ca CO3 mixture is better than that of H2O and Ca CO3but weaker than NH4H2PO4 alone.The effect of inert medium in the process of instantaneous explosion and slow oxidation is not identical and there is no synergistic suppression effect on coal dust combustion.With the decrease of the size of NH4H2PO4,the inhibition performance is enhanced.
作者
谷恭天
王飞
王成
韩晋鑫
GU Gongtian;WANG Fei;WANG Cheng;HAN Jinxin(Institute of Safety and Emergency Management Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Center of Shanxi Mine Safety for Graduate Education Innovation,Taiyuan 030024,China;State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China)
出处
《煤矿安全》
CAS
北大核心
2020年第3期28-31,37,共5页
Safety in Coal Mines
基金
国家自然科学基金资助项目(51804212)
爆炸科学与技术国家重点实验室(北京理工大学)开放课题资助项目(KFJJ19-03M)
山西省重点研发计划资助项目(201803D31053)。
关键词
煤尘
升温燃烧
惰性介质
抑制性能
不同粒径
coal dust
heating and combustion
inert medium
inhibition performance
different particle sizes
