摘要
本研究旨在得到一种新型粉体抑爆剂,采用一系列改性工艺制备了一种新型复合多孔粉状抑爆剂。通过在自行搭建的小尺寸管道内进行甲烷抑爆试验,探讨粉体改性前后对甲烷爆炸的抑制效果。通过最大爆炸超压、火焰传播速率以及火焰传播形态等对抑爆效果进行分析。试验结果表明,改性垃圾焚烧飞灰(MFA)相比于未改性垃圾焚烧飞灰(FA)抑爆性能得到提高,0.12 g/L的MFA使9.5%甲烷的最大爆炸压力降低了30.55%,9.5%甲烷的峰值速度降低了40.24%。同时发现,与FA相比,MFA具有较高的质量损失和较低的热解温度,同时具有物理和化学抑制作用。
The purpose of this study was to obtain a new type of powder explosion suppressant,and a new type of composite porous powder explosion suppressant was prepared by a series of modification processes.The explosion suppression effect of methane before and after powder modification was discussed by carrying out methane inhibition experiments in a self-built small-sized pipeline.The explosion suppression effect was analyzed by the maximum explosion overpressure,flame propagation rate and flame propagation pattern.The experimental results show that the explosion suppression performance of modified waste incineration fly ash(MFA)is improved compared with that of unmodified waste incineration fly ash(FA),and the maximum explosion pressure of 9.5%methane is reduced by 30.55%and the peak velocity of 9.5%methane is reduced by 40.24%by 0.12 g/L MFA.At the same time,it was found that MFA had higher mass loss and lower pyrolysis temperature compared with FA,and had both physical and chemical inhibition effects.
作者
方奇明
贾岳
杨克
邢志祥
张丽
Fang Qiming;Jia Yue;Yang Ke;Xing Zhixiang;Zhang Li(School of Safety Science and Engineering,Changzhou University,Changzhou Jiangsu 213164,China)
出处
《消防科学与技术》
北大核心
2025年第3期306-312,共7页
Fire Science and Technology
基金
国家自然科学基金(51704041)
江苏省自然科学基金(BK20140264)
常州市科技支撑计划(社会发展)项目(CE20235039)。
关键词
甲烷爆炸抑制
改性垃圾焚烧飞灰
火焰传播
理化协同机理
methane explosion suppression
modified waste incineration fly ash
flame propagation
physicochemical synergistic mechanism
