矿业科学学报2024，Vol.9Issue(2)：135-143,9.DOI:10.19606/j.cnki.jmst.2024.02.001
阻燃输送带火灾早期温度变化与烟气成分研究
Temperature variation and smoke composition of flame-retardant conveyor belt in the early stage of friction accident
摘要
Abstract
This study improves the roller friction experiment platform for monitoring the temperature of flame-retardant conveyor belt in order to realize the early warning of belt conveyor fire.Mass spectrometry is used to analyze the patterns of temperature rise and smoke composition of steel cord flame-retardant conveyor belt in the early stage of friction accident.Results show that as friction progresses,the flame-re-tardant conveyor belt exhibits symmetrical distribution of surface temperature,where the highest tempera-ture gradually approaches to the center of the conveyor belt and the composition of smoke changes with temperature.The steel cord flame retardant conveyor belt warming process could be divided into three sta-ges according to their warming rate and smoke composition output:stage of oxidation reaction(ambient temperature to 100℃),stage of substitution reaction(100～160.2℃),and pyrolysis reaction(after 160.2℃).The initial stage features low heat capacity of the conveyor belt with quickly-rising tempera-ture,where the products are mostly alkyl and ester compounds.The second stage exhibits gradual increase of heat capacity,slowly-rising temperature,where the products are mostly nitro,ether,and carboxylic acid compounds.The last stage features stable heat capacity of the conveyor belt,the lowest heating rate,where the chlorine-containing compound is detected for the first time in the smoke composition.关键词
阻燃输送带/滚筒摩擦实验/质谱分析/升温规律/烟气成分Key words
flame-retardant conveyor belt/roller friction/mass spectrometry/temperature rise law/smoke composition分类
矿业与冶金引用本文复制引用
段佳磊,梁运涛,贾宝山,孙勇,王睿德,罗奕杭,崔鑫峰..阻燃输送带火灾早期温度变化与烟气成分研究[J].矿业科学学报,2024,9(2):135-143,9.基金项目
国家自然科学基金(52174229,52174230) （52174229,52174230）
辽宁省自然科学基金面上项目(2023-MS-355) （2023-MS-355）
