煤矿井下输送机胶带燃烧特性实验研究  

Experimental study on combustion characteristics and application of conveyor belt in underground coal mine

作　　者：音勇 YIN Yong(Yan'an Hecaogou Coal Industry Co.,Ltd.,Yan'an 717300,China)

机构地区：[1]延安市禾草沟煤业有限公司,陕西延安717300

出　　处：《煤炭科技》2024年第6期51-56,共6页Coal Science & Technology Magazine

摘　　要：为系统分析煤矿井下PVC与PVG胶带的燃烧特性,探讨PVC及PVG胶带在煤矿井下的应用推广价值,利用锥形量热仪分析了2种胶带在4种热辐射强度下的热释放速率、总热释放量、烟生成速率和总烟气产生量等燃烧参数。结果表明,PVC及PVG胶带在受热辐射过程中存在4个较为明显的变化阶段,分别是预热、点燃与稳定燃烧、燃烧减弱与炭层形成、无焰氧化与残留物。当辐射强度为35、50 kW/m^(2)时PVG胶带的PHRR略低,当热辐射强度为50 kW/m^(2)时PVC胶带的SPR为0.146 m^(2)/s,PVG胶带的SPR为0.076 m^(2)/s,仅为PVC胶带的52.1%。PVG胶带拥有更好的热稳定性及阻燃性,在煤矿井下实际使用过程中拥有更好的应用推广价值。In order to systematically analyze the combustion characteristics of PVC and PVG belts in underground coal mines,and to explore the application and promotion value of PVC and PVG belts in underground coal mines,the combustion parameters such as heat release rate,total heat release,smoke generation rate and total smoke generation of the two types of belts were analyzed by using a cone calorimeter under four types of thermal radiation intensities.The results showed that there were 4 more obvious stages of changes in PVC and PVG belts during the process of thermal radiation,which were preheating,ignition and stable combustion,weakening of combustion and formation of charcoal layer,and flameless oxidation and residue,respectively.When the radiation intensity is 35 and 50 kW/m^(2),the PHRR of PVG belt is slightly lower,when the thermal radiation intensity is 50 kW/m^(2),the SPR of PVC belt is 0.146 m^(2)/s,and that of PVG belt is 0.076 m^(2)/s,which is only 52.1%of that of PVC belt,and the PVG tape has a better thermal stability and flame retardant,and has a better value of application and promotion during the process of underground coal mine.

关 键 词：输送机胶带 锥形量热仪 燃烧特性 

分 类 号：TD752[矿业工程—矿井通风与安全]