典型堆积可燃粉尘自燃特性实验研究

消防科学与技术 ›› 2020, Vol. 39 ›› Issue (9): 1194-1197.

典型堆积可燃粉尘自燃特性实验研究

孟双¹，任常兴²，张琰²，张欣²，王丽¹

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，天津300381

出版日期:2020-09-15 发布日期:2020-09-15
通讯作者: 任常兴（1979-），男，应急管理部天津消防研究所火灾理论研究室副主任，副研究员。
作者简介:孟双（1994-），女，河北保定人，天津理工大学环境科学与安全工程学院硕士研究生，主要从事粉尘爆炸研究，天津市西青区宾水西道391 号，300384。
基金资助:
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）

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

MENG Shuang¹，REN Chang-xing²，ZHANG Yan²，ZHANG Xin²，WANG Li¹

1. School of Environmental Science and Safety Engineering,Tianjin University of Technology, Tianjin 300384,China;2. Tianjin Fire Science and Technology Research Institute of MEM, Tianjin 300381,China

Online:2020-09-15 Published:2020-09-15

摘要/Abstract

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。

关键词: 堆积粉尘, 自燃温度, 体积量, 自燃特性

Abstract: 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.

Key words: accumulated dust, spontaneous combustion temperature, volume of accumulated dust, characteristics of spontaneous combustion

孟双, 任常兴, 张琰, 张欣, 王丽. 典型堆积可燃粉尘自燃特性实验研究[J]. 消防科学与技术, 2020, 39(9): 1194-1197.

MENG Shuang, REN Chang-xing, ZHANG Yan, ZHANG Xin, WANG Li. Experimental study on the spontaneous combustion characteristics of typical accumulated combustible dust[J]. Fire Science and Technology, 2020, 39(9): 1194-1197.