环氧丙烷蒸气-铝粉-空气杂混合物的爆炸特性研究

谭汝媚; 张奇

doi:10.11858/gywlxb.2014.01.008

环氧丙烷蒸气-铝粉-空气杂混合物的爆炸特性研究

doi: 10.11858/gywlxb.2014.01.008

谭汝媚^{1, 2,},
张奇^1,*, ,

1.
北京理工大学爆炸科学与技术国家重点实验室，北京 100081
2.
西南科技大学环境与资源学院，四川绵阳 621010

基金项目: 国家自然科学基金(11372044)

详细信息

作者简介:
谭汝媚(1976-), 女, 博士研究生, 讲师, 主要从事事故演化动力学研究.E-mail:yiran76@163.com

通讯作者:
张奇(1956-), 男, 博士, 教授, 主要从事爆炸安全研究.E-mail:qzhang@bit.edu.cn

中图分类号: O382.1; X932
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出版历程
- 收稿日期: 2012-04-07
- 修回日期: 2012-07-02

Research on the Explosibility of Gaseous Epoxypropane-Aluminum Dust-Air Hybrid Mixtures

TAN Ru-Mei^{1, 2
,},
ZHANG Qi^{1,*
, ,}

1.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
2.
School of Environmental Resources and Engineering, Southwest University of Science and Technology, Mianyang 621010, China

摘要

摘要: 为了评估环氧丙烷蒸气-铝粉-空气杂混合物的爆炸危险性，在5 L圆柱形爆炸装置中分别对铝粉、环氧丙烷蒸气及铝粉与环氧丙烷蒸气共存条件下的杂混合物进行了爆炸浓度下限的实验研究。结果表明：环氧丙烷蒸气可使杂混合物的爆炸下限浓度降低；杂混合物的最大爆炸压力上升速率由于环氧丙烷蒸气的存在而增强；当铝粉浓度较低时，环氧丙烷蒸气的加入使最大爆炸压力明显增加，之后随着铝粉浓度的增加，最大爆炸压力反而减小。
- 粉尘爆炸 /
- 杂混合物 /
- 环氧丙烷蒸气 /
- 爆炸严重度 /
- 爆炸浓度下限
Abstract: To evaluate the hazard of combined gaseous epoxypropane-aluminum dust explosions, a 5 L spherical exploding device was used to measure the lower limit of explosion densities of aluminum dust in aluminum dust-air mixtures and gaseous epoxypropane-aluminum dust-air hybrid mixtures, and gaseous epoxypropane in gaseous epoxypropane-air mixtures.The results show that the existence of gas epoxypropane can reduce the lower limit of explosion density of the hybrid mixtures, and enlarge the rate of pressure rise of the hybrid mixtures; at low aluminum dust concentration, the maximum overpressures rise due to the existence of gaseous epoxypropane, and then fall with increasing aluminum dust concentration.
- dust explosions /
- hybrid mixture /
- gaseous epoxypropane /
- explosion severity /
- lower limit of explosion density

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图 1 蒸气-粉尘爆炸实验装置

Figure 1. Explosive experimental devices of vapour-dust

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图 2 环氧丙烷蒸气浓度为零和1.4%时不同浓度铝粉的最大爆炸压力

Figure 2. Maximum overpressures as a function of the aluminum dust content at the volume fraction of gaseous epoxypropane of 0 or 1.4%

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图 3 环氧丙烷蒸气浓度为零和1.4%时不同浓度铝粉的最大爆炸压力上升速率

Figure 3. Maximum rates of pressure rise as a function of the aluminum dust content at the volume fraction of gaseous epoxypropane of 0 or 1.4%

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图 4 310 g/m³铝粉-空气混合物的爆炸压力曲线

Figure 4. Pressure evolution for 310 g/m³ aluminum dust-air hybrid mixture

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图 5 1.4%环氧丙烷-310 g/m³铝粉-空气混合物的爆炸压力曲线

Figure 5. Pressure evolution for the 1.4% gaseous epoxypropane-310 g/m³ aluminum dust-air hybrid mixture

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表 1 不同点火延迟时间下不同浓度铝粉-空气混合物的爆炸参数

Table 1. Explosion parameters of aluminium dust-air mixtures at different ignition delay time

C_Al/(g/m³)	t_d/(ms)	p_max/(MPa)	(dp/dt)_max/(MPa/s)
500	60	0.851	47.8
500	60	0.766	51.9
500	60	0.817	62.8
500	70	0.715	25.3
500	70	0.670	36.0
500	70	0.813	48.5
500	50	0.772	50.3
500	50	0.762	40.1
500	50	0.758	57.6
500	40	0.794	55.2
500	40	0.722	39.4
500	40	0.701	54.9
310	80	0.434	7.5
310	80	0.377	12.1
310	80	0.484	8.5
310	70	0.500	16.0
310	70	0.528	15.5
310	70	0.546	15.2
310	60	0.670	22.5
310	60	0.637	18.8
310	60	0.694	24.0
310	50	0.601	19.0
310	50	0.511	18.3
310	50	0.624	16.1
200	60	─	─
200	60	─	─
200	60	─	─
200	60	0.413	6.6
200	60	─	─
200	60	0.270	2.1
200	60	─	─
200	60	─	─
200	60	0.382	3.4
200	20	─	─
200	20	─	─
200	20	─	─
200	20	─	─
200	20	─	─
200	20	0.607	17.7
200	20	─	─
200	20	─	─
200	20	0.546	11.0
200	20	─	─
200	20	─	─
200	20	─	─
200	20	─	─
200	20	0.570	18.6
200	30	─	─
200	30	─	─
200	30	─	─
200	30	0.605	12.3
200	30	0.451	5.0
200	30	─	─
200	30	─	─
200	30	0.432	21.4
200	40	─	─
200	40	─	─
200	40	─	─
200	40	0.444	6.8
200	40	─	─
200	40	─	─
200	40	─	─
200	40	─	─
200	40	─	─
200	40	0.590	8.9
200	40	─	─
200	40	─	─
200	40	─	─
200	40	0.486	5.9
150	20	─	─
150	20	─	─
150	30	─	─
150	30	─	─
150	60	─	─
150	60	─	─
150	40	─	─
150	40	─	─
Note:“─” denotes that the mixture in the vessel was not initiated in the experiment.

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表 2 环氧丙烷蒸气-空气混合物的爆炸参数

Table 2. Explosion parameters of gaseous epoxypropane-air mixtures

φ_PO/(%)	p_max/(MPa)	(dp/dt)_max/(MPa/s)
2.8	0.320	13.20
2.8	0.227	3.51
2.8	0.234	3.93
2.8	0.290	9.13
2.1	0.240	4.08
2.1	0.221	4.93
2.1	0.258	4.62
1.4	─	─
1.4	─	─
1.4	─	─
1.4	─	─
1.4	─	─
1.4	─	─
1.4	─	─
Note:“─” denotes that the mixture in the vessel was not initiated in the experiment.

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表 3 环氧丙烷的体积分数为1.4%时环氧丙烷蒸气-铝粉-空气杂混合物的爆炸参数

Table 3. Explosion parameters of gaseous epoxypropane-aluminum dust-air hybrid mixtures with a volume fraction of gaseous epoxypropane of 1.4%

C_Al/(g/m³)	t_d/(ms)	p_max/(MPa)	(dp/dt)_max/(MPa/s)
500	60	0.685	72.3
500	60	0.694	85.9
500	60	0.707	68.8
310	60	0.645	40.7
310	60	0.716	50.4
310	60	0.674	37.2
200	20	0.748	131.0
200	20	0.749	102.6
200	20	0.721	74.2
100	20	0.484	14.2
100	20	0.485	11.4
100	20	0.528	37.0
80	20	0.345	11.4
80	20	0.417	8.5
80	20	0.445	12.3
60	20	0.203	4.3
60	20	0.403	11.1
60	20	0.435	16.2
50	20	─	─
50	20	─	─
50	20	─	─
50	20	─	─
50	20	0.218	4.2
30	20	─	─
30	20	─	─
30	20	─	─
30	20	─	─
30	20	─	─
30	20	─	─
30	20	0.035	2.3
25	20	─	─
25	20	─	─
25	20	─	─
25	20	─	─
25	20	─	─
25	20	─	─
25	20	─	─
Note:“─” denotes that the mixture in the vessel was not initiated in the experiment.

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参考文献(19)

[1]	Britton L G. Avoiding Static Ignition Hazards in Chemical Operations[M]. New York, USA: Center for Chemical Process Safety/AIChE, 1999: 172.
[2]	Dufaud O, Perrin L, Traore M, et al. Explosions of vapour/dust hybrid mixtures: A particular class[J]. Powder Technol, 2009, 190(1/2): 269-273. http://www.sciencedirect.com/science/article/pii/S0032591008002301
[3]	Cashdollar K L, Sapko M J, Weiss E S, et al. Laboratory and mine dust explosion research at the Bureau of Mines[C]//Cashdollar K L, Hertzberg M. Industrial Dust Explosions: Symposium on Industrial Dust Explosions. West Conshohocken, USA: ASTM International, 1987: 107-123.
[4]	Cashdollar K L. Coal dust explosibility[J]. J Loss Prev Process Ind, 1996, 9(1): 65-76. doi: 10.1016/0950-4230(95)00050-X
[5]	Chatrathi K. Dust and hybrid explosibility in a 1 m³ spherical chamber[J]. Process Saf Prog, 1994, 13(4): 183-189. doi: 10.1002/prs.680130403
[6]	Pilão R, Ramalho E, Pinho C. Explosibility of cork dust in methane/air mixtures[J]. J Loss Prev Process Ind, 2006, 19(1): 17-23. doi: 10.1016/j.jlp.2005.05.001
[7]	Denkevits A. Explosibility of hydrogen-graphite dust hybrid mixtures[J]. J Loss Prev Process Ind, 2007, 20: 698-707. doi: 10.1016/j.jlp.2007.04.033
[8]	Foniok R. Hybrid dispersive mixtures and inertized mixtures of coal dust: Explosiveness and ignitability[J]. Staub Reinhalt Luft, 1985, 45(4): 151-154. http://www.researchgate.net/publication/283749099_EXPLOSIVENESS_AND_IGNITABILITY
[9]	Liu Y, Sun J, Chen D. Flame propagation in hybrid mixture of coal dust and methane[J]. J Loss Prev Process Ind, 2007, 20(4/5/6): 691-697. http://www.sciencedirect.com/science/article/pii/S0950423007000629
[10]	司荣军, 王春秋.瓦斯对煤尘爆炸特性影响的实验研究[J].中国安全科学学报, 2006, 16(12): 86-91. http://d.wanfangdata.com.cn/Periodical/zgaqkxxb200612016 Si R J, Wang C Q. Experimental research on the influence of gas on the character of coal dust explosion[J]. China Safety Science Journal, 2006, 16(12): 86-91. (in Chinese) http://d.wanfangdata.com.cn/Periodical/zgaqkxxb200612016
[11]	Garcia-Agreda A, Di Benedetto A, Russo P, et al. Dust/gas mixtures explosion regimes[J]. Powder Technol, 2011, 205(1/2/3): 81-86. http://www.sciencedirect.com/science/article/pii/S0032591010004705
[12]	Nifuku M, Tsujita H, Fujino K, et al. Ignitability assessment of shredder dusts of refrigerator and the prevention of the dust explosion[J]. J Loss Prev Process Ind, 2006, 19(2/3): 181-186. http://www.sciencedirect.com/science/article/pii/S0950423005000471
[13]	Dufaud O, Perrin L, Traoré M. Dust/vapour explosions: Hybrid behaviours?[J]. J Loss Prev Process Ind, 2008, 21(4): 481-484. doi: 10.1016/j.jlp.2007.11.005
[14]	Zhang Q, Li W, Lin D C, et al. Influence of nitromethane concentration on ignition energy and explosion parameters in gaseous[J]. J Hazard Mater, 2011, 185(2/3): 756-762. http://www.ncbi.nlm.nih.gov/pubmed/20965653
[15]	谭汝媚, 张奇, 黄莹.环境湿度对环氧丙烷蒸气爆炸参数的影响[J].高压物理学报, 2013, 27(3): 325-330. http://www.cnki.com.cn/Article/CJFDTotal-GYWL201303002.htm Tan R M, Zhang Q, Huang Y. Ambient humidity influence on explosion characteristics parameters of gaseous epoxypropane[J]. Chinese Journal of High Pressure Physics, 2013, 27(3): 325-330. (in Chinese) http://www.cnki.com.cn/Article/CJFDTotal-GYWL201303002.htm
[16]	Liu Q M, Li X D, Bai C H. Deflagration to detonation transition in aluminum dust-air mixture under weak ignition condition[J]. Combust Flame, 2009, 156(4): 914-921. doi: 10.1016/j.combustflame.2008.10.025
[17]	汪佩兰, 王海福, 李盛, 等.含能材料粉尘爆炸压力和压力上升速率的研究[J].兵工学报, 1995(3): 59-63. http://www.cqvip.com/Main/Detail.aspx?id=1697930 Wang P L, Wang H F, Li S, et al. A study on the pressure and rate of pressure rise in energetic material dusts[J]. Acta Armamentarii, 1995(3): 59-63. (in Chinese) http://www.cqvip.com/Main/Detail.aspx?id=1697930
[18]	Zhang Q, Tan R, Huang Y, et al. Effects of humidity on minimum ignition energy of gaseous epoxypropane/air mixtures[J]. J Loss Prev Process Ind, 2012, 25(6): 982-988. doi: 10.1016/j.jlp.2012.05.013
[19]	Dufaud O, Traoré M, Perrin L, et al. Experimental investigation and modelling of aluminum dusts explosions in the 20 L sphere[J]. J Loss Prev Process Ind, 2010, 23(2): 226-236. doi: 10.1016/j.jlp.2009.07.019