典型堆积可燃粉尘自燃特性实验研究  

Experimental study on the spontaneous combustion characteristics of typical accumulated combustible dust

作　　者：孟双 任常兴 张琰 张欣 王丽[1] MENG Shuang;REN Chang-xing;ZHANG Yan;ZHANG Xin;WANG Li(School of Environmental Science and Safety Engineering,Tianjin University of Technology,Tianjin 300384,China;Tianjin Fire Science and Technology Research Institute of MEM,Tianjin 300381,China)

机构地区：[1]天津理工大学环境科学与安全工程学院,天津300384 [2]应急管理部天津消防研究所火灾理论研究室,天津300381 [3]应急管理部天津消防研究所,天津300381

出　　处：《消防科学与技术》2020年第9期1194-1197,共4页Fire Science and Technology

基　　金：国家重点研发计划项目(2017YFC0804703);应急管理部天津消防研究所基科费项目(2018SJ05)。

摘　　要：以标准堆积粉尘自然温度测定实验装置,开展堆积状态下典型褐煤、木粉的自燃特性实验研究,分析其在自然通风条件下堆积自燃的温度与时间变化特征,明确了堆积粉尘自燃现象的判断依据和测定方法。结果表明:依据测定堆积粉尘体积量的自燃温度可以预测较大体积量粉尘的自燃温度,堆积体积量越大,自燃温度越低;同一温度下,体积量越大堆积粉尘不稳定。该研究可为堆积粉尘自燃火灾防控和事故调查提供实验数据支撑。The experimental study on the spontaneous combustion characteristics of typical lignite and wood powder under the condition of stacking was carried out by using the standard stack dust natural temperature measuring device.This paper analyzes the characteristics of temperature and time changes of combustible dust accumulation and spontaneous combustion under natural ventilation,and defines the criteria basis and measurement method of accumulation and spontaneous combustion.The experimental results show that the spontaneous combustion temperature of large volume of dust can be predicted based on the measurement of the volume of accumulated dust:the larger the volume of accumulated dust is,the lower the spontaneous combustion temperature is;at the same temperature,the larger the volume of accumulated dust is,the more unstable the accumulated dust is.This study can provide experimental data support for the prevention and control of spontaneous combustion fire and accident investigation of accumulated dust.

关 键 词：堆积粉尘 自燃温度 体积量 自燃特性 

分 类 号：X928.1[环境科学与工程—安全科学] X932