不同粒度煤样高温燃烧特性研究_中国煤炭行业知识服务平台

不同粒度煤样高温燃烧特性研究

Title

Study on high temperature combustion characteristics of coal samples with different particle size
作者

文辰辰张雷林张美琴
Author

WEN Chenchen;ZHANG Leilin;ZHANG Meiqin
单位

安徽理工大学安全科学与工程学院煤矿安全高效开采省部共建教育部重点实验室郑煤集团裴沟煤矿筛选厂
Organization

School of Safety Science and Engineering,Anhui University of Science and Technology
Key Laboratory of Mining Coal Safety and Efficiently Constructed by Anhui Province and the Ministry of Education
Sizing Plant of Peigou Coal Mine,Zhengzhou Coal Industry(Group) Co. ,Ltd.
摘要

为研究不同粒度煤样高温条件下的燃烧特性及燃烧效率,采用锥形量热仪测试了6种粒度煤样在热辐射作用下的燃烧特性参数。研究结果表明,煤样点燃时间与煤颗粒大小总体呈正相关关系;热释放速率峰值随煤样粒径减小而逐渐下降,在热释放速率曲线稳定阶段(>150s),不同粒径煤样热释放速率由大到小依次为>0~0.12、>0.12~0.15、>0.15~0.18、>0.18~0.25、>0.25~0.38、>0.38~0.83mm;总热释放量随粒径减小而逐渐增加;总烟释放量随煤样粒径增大而上升,最大粒径煤样(>0.38~0.83mm)的烟气生成速率和总烟释放量均为最大;煤样燃烧过程中CO生成速率和CO2生成速率均随煤样粒径减小而逐渐增大。引入煤样的火灾性能指数(FFPI)和火灾增长指数(FFGI),对比分析不同粒度煤样的燃烧效率得出:最小粒径煤样(>0~0.12mm)的燃烧效率最高,FFPI最小(0.27m2·s/kW),FFGI最大(3.70kW/(m2·s))。研究结果对揭示高温环境下粒度对煤样燃烧特性的影响具有一定的借鉴意义。
Abstract

In order to study the combustion characteristics and combustion efficiency of coal samples with different particlehas the highest combustion efficiency. The lowest value of fire performance index (FFPI) is 0. 27 m2·s/ kW,and the highest value of fire growth index (FFGI) is 3. 70 kW/ (m2·s). The research results have a certain reference significance for revealing the influence of particle size on the combustion characteristics of coal samples under high temperature environment.
关键词

煤样粒度燃烧特性参数热释放烟释放燃烧效率
KeyWords

particle size of coal sample;combustion characteristic parameter;heat release;smoke release;combustion efficiency
基金项目(Foundation)

国家自然科学基金项目(51874008)
DOI

10.19835/j.issn.1008-4495.2023.06.010
引用格式

文辰辰,张雷林,张美琴. 不同粒度煤样高温燃烧特性研究[J]. 矿业安全与环保,2023,50(6):60-64.
Citation

WEN Chenchen,ZHANG Leilin,ZHANG Meiqin. Study on high temperature combustion characteristics of coal samples with different particle size[J]. Mining Safety & Environmental Protection,2023,50(6):60-64.