激波卷扬三通管内铝粉致二次爆炸及抑爆研究
|
摘要
设计粉尘爆炸综合测试平台,研究激波卷扬铝粉致二次爆炸的现象及其抑爆规律。结果显示,中位粒径为35μm的铝粉在质量浓度为500 g/m3时的最大爆炸压力等爆炸特性参数值高于其他浓度。基于工业管道集尘系统特点设计实验室水平三通管抑爆系统进行试验,结果表明:封闭三通管的分岔结构增强了主管道分岔口的爆炸压力和火焰传播速度,同时削弱了垂直分管道的爆炸压力和火焰传播速度;铝粉最大爆炸压力和火焰传播速度随加入抑爆剂浓度的增加而减小,磷酸二氢铵抑爆剂质量分数为10%时可以完全抑制铝粉爆炸。
In order to study the secondary explosion of aluminum dust diffused by shock wave from the primary explosion and its explosion suppression regularity,an integrated dust explosion laboratory pipeline is designed.The results show that the explosion characteristic parameters such as the maximum explosion pressure of the aluminum dust with a median particle size of 35 μm at a mass concentration of 500 g/m3 are higher than that of other concentrations.Based on the characteristics of dust collection system of industrial polishing process,the explosion suppression system of horizontal T-branch pipeline in laboratory is designed.The analysis results show that the bifurcation structure of the closed Tbranch pipeline enhances the explosive pressure and flame propagation velocity at the bifurcation of the main pipe,and weakens the explosive pressure and flame propagation velocity at the vertical bifurcation pipe; The maximum explosion pressure and flame propagation velocity of aluminum dust decrease with the increase of explosion suppressant concentration,and when the content of ammonium dihydrogen phosphate is 10%(mass fraction),the explosion of aluminum dust used in the experiment can be completely suppressed.
In order to study the secondary explosion of aluminum dust diffused by shock wave from the primary explosion and its explosion suppression regularity,an integrated dust explosion laboratory pipeline is designed.The results show that the explosion characteristic parameters such as the maximum explosion pressure of the aluminum dust with a median particle size of 35 μm at a mass concentration of 500 g/m3 are higher than that of other concentrations.Based on the characteristics of dust collection system of industrial polishing process,the explosion suppression system of horizontal T-branch pipeline in laboratory is designed.The analysis results show that the bifurcation structure of the closed Tbranch pipeline enhances the explosive pressure and flame propagation velocity at the bifurcation of the main pipe,and weakens the explosive pressure and flame propagation velocity at the vertical bifurcation pipe; The maximum explosion pressure and flame propagation velocity of aluminum dust decrease with the increase of explosion suppressant concentration,and when the content of ammonium dihydrogen phosphate is 10%(mass fraction),the explosion of aluminum dust used in the experiment can be completely suppressed.
引文
[1]LI G,YANG H X,YUAN C M,et al.A catastrophic aluminiumalloy dust explosion in China[J].Journal of Loss Prevention in the Process Industries,2016,39:121-130.
[2]曹杭,程道来,张志凯,等.铝镁合金粉尘安全特性实验研究[J].消防科学与技术,2015,34(10):1324-1332.
[3]王以革.铝粉爆炸特性与涉铝粉场所防爆对策探讨[J].消防科学与技术,2017,36(6):850-852.
[4]谭迎新,薄涛.激波诱导下煤粉的爆炸压力测试[J].中国安全科学学报,2009,19(7):74-77.
[5]沈世磊,张奇,马秋菊,等.湍流对铝粉爆炸特性的影响[J].兵工学报,2016,37(3):455-461.
[6]叶圣军.除尘管道内沉积颗粒物(铝合金粉)形成爆炸规律研究[D].上海:上海应用技术学院,2016.
[7]JOHNSTON H G,CHOWDHURY A Y,MANNAN M S,et al.Effect of coal-limestone mixtures on dust dispersion behind a moving shock wave[J].Journal of Loss Prevention in the Process Industries,2016,44:551-563.
[8]张一博,谭迎新.激波诱导铝粉二次爆炸的试验研究[J].中国安全科学学报,2012,22(10):61-64.
[9]杜扬,李国庆,李阳超,等.T型分支管道对油气爆炸压力的影响[J].爆炸与冲击,2017,37(2):323-331.
[10]林柏泉,叶青,翟成,等.瓦斯爆炸在分岔管道中的传播规律及分析[J].煤炭学报,2008,33(2):136-139.
[11]雷伟刚,毕海普,王凯全.弯管内铝粉二次爆炸及抑爆试验研究[J].中国安全科学学报,2017,27(11):43-48.
[12]JIANG H,BI M,GAO W,et al.Inhibition of aluminum dust explosion by NaHCO3with different particle size distributions[J].Journal of Hazardous Materials,2018,344:902-912.
[13]李亚男.磷酸二氢铵对金属粉尘的爆炸抑制研究[D].山西:中北大学,2015.
[14]任一丹,刘龙,袁旌杰,等.粉尘爆炸中惰性介质抑制机理及协同作用[J].消防科学与技术,2015,34(2):158-162.
[15]白春华.工业粉尘“二次爆炸”过程研究[J].中国安全科学学报,1995,5(1):6-11.
[16]雷伟刚,毕海普,王凯全.铝粉抑爆剂适用性能评估研究[J].安全与环境工程,2018,25(2):121-125+138.
[2]曹杭,程道来,张志凯,等.铝镁合金粉尘安全特性实验研究[J].消防科学与技术,2015,34(10):1324-1332.
[3]王以革.铝粉爆炸特性与涉铝粉场所防爆对策探讨[J].消防科学与技术,2017,36(6):850-852.
[4]谭迎新,薄涛.激波诱导下煤粉的爆炸压力测试[J].中国安全科学学报,2009,19(7):74-77.
[5]沈世磊,张奇,马秋菊,等.湍流对铝粉爆炸特性的影响[J].兵工学报,2016,37(3):455-461.
[6]叶圣军.除尘管道内沉积颗粒物(铝合金粉)形成爆炸规律研究[D].上海:上海应用技术学院,2016.
[7]JOHNSTON H G,CHOWDHURY A Y,MANNAN M S,et al.Effect of coal-limestone mixtures on dust dispersion behind a moving shock wave[J].Journal of Loss Prevention in the Process Industries,2016,44:551-563.
[8]张一博,谭迎新.激波诱导铝粉二次爆炸的试验研究[J].中国安全科学学报,2012,22(10):61-64.
[9]杜扬,李国庆,李阳超,等.T型分支管道对油气爆炸压力的影响[J].爆炸与冲击,2017,37(2):323-331.
[10]林柏泉,叶青,翟成,等.瓦斯爆炸在分岔管道中的传播规律及分析[J].煤炭学报,2008,33(2):136-139.
[11]雷伟刚,毕海普,王凯全.弯管内铝粉二次爆炸及抑爆试验研究[J].中国安全科学学报,2017,27(11):43-48.
[12]JIANG H,BI M,GAO W,et al.Inhibition of aluminum dust explosion by NaHCO3with different particle size distributions[J].Journal of Hazardous Materials,2018,344:902-912.
[13]李亚男.磷酸二氢铵对金属粉尘的爆炸抑制研究[D].山西:中北大学,2015.
[14]任一丹,刘龙,袁旌杰,等.粉尘爆炸中惰性介质抑制机理及协同作用[J].消防科学与技术,2015,34(2):158-162.
[15]白春华.工业粉尘“二次爆炸”过程研究[J].中国安全科学学报,1995,5(1):6-11.
[16]雷伟刚,毕海普,王凯全.铝粉抑爆剂适用性能评估研究[J].安全与环境工程,2018,25(2):121-125+138.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |