煤矿安全2024，Vol.55Issue(1)：126-131,6.DOI:10.13347/j.cnki.mkaq.20230267
镁盐阻化剂抑制煤自燃特性的实验研究
Experimental study on the inhibition of spontaneous combustion characteristics of coal by magnesium salt inhibitor
程子朦 1李绍英 1白丽梅 1郭立稳 1马玉新 1赵留成1
作者信息
- 1. 华北理工大学 矿业工程学院,河北 唐山 063210
- 折叠
摘要
Abstract
In order to study the effect of magnesium salt(magnesium chloride hexahydrate + magnesium hydroxide)on the retarding characteristics of coal spontaneous combustion,the effects of inhibitor dosage and silane coupling agent on the characteristic temper-ature and thermal effect of coal spontaneous combustion were studied by synchronous thermal analysis and programmed heating-gas chromatography.The results of simultaneous thermal analysis showed that the inhibitory effect was relatively best when the mag-nesium salt inhibitor was added at 30%,the pyrolysis temperature T3 was delayed by 40 ℃ compared with the raw coal sample,and the total heat release was reduced by 165.14 J/mg.F@M30%·G resisted coal sample adding silane coupling agent mainly delayed the occurrence of coal pyrolysis and ignition,in which the pyrolysis temperature T3 was 49 ℃ higher than that of raw coal,and the igni-tion temperature T4 was increased by 26 ℃.F@M30%inhibited coal samples can reduce the volume fraction of CO,and the effect of inhibiting spontaneous combustion of coal is gradually enhanced with the increase of temperature.After adding silane coupling agent,the volume fraction of CO of inhibited coal samples can be reduced by about 4×10-6.The inhibition rate of F@M30%inhibited coal samples is 30.87%,and that of F@M30%·G inhibited coal samples is as high as 91.57%.关键词
阻化剂/镁盐/煤自燃/特征温度/放热特性/阻化率/防灭火Key words
resisting agents/magnesium salts/spontaneous combustion of coal/characteristic temperature/exothermic properties/resistivity rate/fire control分类
矿业与冶金引用本文复制引用
程子朦,李绍英,白丽梅,郭立稳,马玉新,赵留成..镁盐阻化剂抑制煤自燃特性的实验研究[J].煤矿安全,2024,55(1):126-131,6.
