[1]邓 军,屈 姣,王秋红,等.ABC/MCA粉体对铝金属粉爆炸特性的影响[J].西安科技大学学报,2020,(01):18-23.
 DENG Jun,QU Jiao,WANG Qiu-hong,et al.Inhibition of ABC/MCA powder on explosion characteristics of aluminum metal powder[J].Journal of Xi'an University of Science and Technology,2020,(01):18-23.
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ABC/MCA粉体对铝金属粉爆炸特性的影响(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2020年01期
页码:
18-23
栏目:
出版日期:
2020-02-15

文章信息/Info

Title:
Inhibition of ABC/MCA powder on explosion characteristics of aluminum metal powder
文章编号:
1672-9315(2020)01-0018-06
作者:
邓 军12屈 姣12王秋红12杨玉峰12
(1.西安科技大学 安全科学与工程学院,陕西 西安 710054; 2.西安科技大学 陕西省煤火灾害防治重点实验室,陕西 西安 710054)
Author(s):
DENG Jun12QU Jiao12WANG Qiu-hong12YANG Yu-feng12
(1.College of Safety Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China; 2.Shaanxi Key Laboratory of Prevention and Control of Coal Fire,Xi'an University of Science and Technology,Xi'an 710054,China)
关键词:
竖直管道 复配粉体 最大爆炸压力 抑爆效能
Keywords:
vertical pipeline composite powder maximum explosion pressure explosion suppression
分类号:
X 932
文献标志码:
A
摘要:
为了研究ABC/MCA粉体对铝金属粉爆炸的抑制作用,采用竖直管道粉尘爆炸装置,分别测试了Al/ABC,Al/MCA,Al/ABC/MCA混合粉体的爆炸严重程度,探讨了ABC+MCA复配粉体的协同抑爆机理,并对不同粉体的抑爆效果进行了对比分析,研究结果表明,ABC/MCA粉体的添加,使铝粉爆炸危险性大大降低。与ABC粉相比,MCA粉对铝粉的抑爆作用更加显著。随着MCA粉质量分数的增加,铝粉最大爆炸压力降幅增大,且当MCA粉的质量分数达15.8%,Al/MCA混合粉体未发生爆炸,ABC+MCA复配粉体对铝粉爆炸也具有抑制作用,添加剂总质量一定时,随着复配比的减小,铝粉最大爆炸压力减小,且降幅增大。复配粉体吸热分解出惰性气体和P2O5,降低反应速率,稀释O2浓度,且P2O5覆盖在铝粉表面,隔绝空气,从而达到协同抑爆作用。最后对比得到不同粉体对铝粉爆炸的抑制效果为:ABC<ABC+MCA<MCA.
Abstract:
To investigate the inhibition effect of ABC/MCA powder for aluminum metal dust explosions,a self-designed vertical pipeline dust explosion test equipment was employed to determine the explosion severity of Al/ABC,Al/MCA,and Al/ABC/MCA mixtures,respectively.The synergistic anti-explosion mechanism of ABC+MCA composite powder was investigated.The anti-explosion effects of different powders were analyzed.The results showed that:The addition of ABC/MCA powder greatly reduced the risk of aluminum powder explosion.The inhibition effect of MCA powder for aluminum powder was more remarkable than that of ABC powder.As the mass fraction of MCA powder increased,Pmax and(dP/dt)max of Al/MCA mixture decreased,and when the mass fraction of MCA powder reached to 15.8%,explosion would be inhibited.The ABC+MCA composite powder also had an inhibition effect on the aluminum powder explosion.When the total mass of the additive was constant,Pmax decreased with the decrease of the mixing ratio,and the decreasing range increased.The composite powder absorbed a large amount of heat and then decomposed to generate inert gases and the reaction product P2O5,which reduced the reaction rate and diluted O2 concentration.Meanwhile,P2O5 covered the surface of aluminum powder and protected it from air.Thereby synergistic explosion suppression was achieved.Finally,the ranking of inhibition effect of different suppressants on aluminum powder explosion was as follows:ABC<ABC+MCA<MCA.

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备注/Memo

备注/Memo:
收稿日期:2019-07-12 责任编辑:李克永
基金项目:国家自然科学基金(41702298,41602359); 陕西省自然科学基础研究计划(2017JQ4020); 陕西省教育厅专项科研计划(17JK0515)
通信作者:段 钊(1985-),男,陕西西安人,博士,副教授,E-mail:landsliders@163.com
更新日期/Last Update: 2020-02-15