CO<sub>2</sub>-多孔材料协同抑制甲烷爆炸特性

CO₂-多孔材料协同抑制甲烷爆炸特性

Co-Inhibition of Methane Explosion by CO₂-Porous Materials

doi: 10.11858/gywlxb.20230730

作者简介:
向开军（1980－），男，博士，高级工程师，主要从事矿山安全研究. E-mail：39724374@qq.com

通讯作者:
段玉龙（1982－），男，博士，副教授，主要从事油气爆炸动力学研究. E-mail：dylnhz@126.com

向开军; 段玉龙; 何国钦; 黄维

doi:10.11858/gywlxb.20230730

向开军^1,,
段玉龙^{2, 3,*, ,},
何国钦^{2, 3},
黄维^{2, 3}

1.
海南拓力特科技有限公司, 海南海口　570100
2.
重庆科技学院安全工程学院, 重庆　401331
3.
油气生产安全与风险控制重庆市重点实验室, 重庆　401331

基金项目: 重庆市教委科学技术研究项目（KJQN202101503, KJQN201901549）

详细信息

中图分类号: O382.1; X932
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- 文章访问数: 102
- HTML全文浏览量: 20
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出版历程
- 收稿日期: 2023-08-28
- 修回日期: 2023-10-30
- 网络出版日期: 2024-02-01
- 刊出日期: 2024-02-05

CO₂ pressure/MPa

Porosity/PPI

CO₂ pressure/MPa

Porosity/PPI

XIANG Kaijun^1
,,
DUAN Yulong^{2, 3,*
, ,},
HE Guoqin^{2, 3},
HUANG Wei^{2, 3}

1.
Hainan Tuolite Technology Co., Ltd., Haikou 570100, Hainan, China
2.
School of Safety Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
3.
Chongqing Key Laboratory of Oil and Gas Production Safety and Risk Control, Chongqing 401331, China

摘要

摘要: 为探究CO₂协同多孔材料对甲烷爆炸特性的影响，自主设计了100 mm×100 mm×1000 mm爆炸管道并搭建实验平台，研究不同多孔材料孔隙度及CO₂喷气压力对甲烷爆炸火焰结构、火焰传播速度和爆炸超压的影响。结果表明：多孔材料对火焰波有衰减和促进2种效果，当多孔材料孔隙度为10和20 PPI时，未能成功阻爆，而当孔隙度为40 PPI时，阻爆效果明显；CO₂喷气压力有一定的阻爆效果，当多孔材料为10和20 PPI时，随着CO₂喷气压力的升高，火焰速度峰值逐渐减小，衰减率最大可达13.64%，且爆炸超压峰值也随之下降，其衰减率最大可达52.83%。综合火焰速度和压力变化分析可知，当多孔材料的孔隙度为40 PPI、CO₂喷气压力为0.4 MPa时，阻抑爆效果最显著。
- CO₂ /
- 多孔材料 /
- 甲烷爆炸 /
- 协同抑爆 /
- 孔隙度
Abstract: In order to explore the influence of CO₂ and porous materials on methane explosion characteristics, the 100 mm×100 mm×1000 mm explosion pipeline was independently designed. The influence of porosity of different porous materials and CO₂ injection pressure on methane explosion flame structure, flame propagation velocity and explosion overpressure were examined. The results show that: the porous material has two opposite effects on flame wave attenuation and promotion. When the porosity of the porous material is 10 and 20 PPI, it fails to resist the explosion, but when the porosity is 40 PPI, the explosion resistance is evident. CO₂ jet pressure has a certain effect on explosion resistance. When the porous material is 10 and 20 PPI, the peak flame velocity decreases gradually with an increase in CO₂ jet pressure, the maximum attenuation rate is 13.64%, and the maximum attenuation rate of the peak explosion overpressure is 52.83%. According to the variations of flame velocity and pressure, the porosity of the porous material is 40 PPI, and the CO₂ jet pressure is 0.4 MPa, the explosion suppression effect is the optimal.
- CO₂ /
- porous material /
- methane explosion /
- coordinated detonation suppression /
- porosity

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图 1 实验装置

Figure 1. Experimental device

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图 2 0 MPa时火焰结构的变化

Figure 2. Changes of the flame structure at 0 MPa

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图 3 0.2 MPa时火焰结构的变化

Figure 3. Changes of the flame structure at 0.2 MPa

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图 4 0.4 MPa时火焰结构的变化

Figure 4. Changes of the flame structure at 0.4 MPa

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图 5 火焰锋面速度变化曲线

Figure 5. Velocity curves of flame front

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图 6 各工况下爆炸超压变化曲线

Figure 6. Explosion overpressure curve under different conditions

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图 7 各工况下压力峰值的对比

Figure 7. Comparison of peak pressure under different conditions

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表 1 实验工况

Table 1. Experimental conditions

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表 2 各工况下爆炸超压峰值及超压峰值衰减率

Table 2. Peak overpressure under each working condition and the attenuation rate of peak overpressure

CO₂ pressure/MPa	Porosity/PPI	Peak explosion pressure/kPa		Attenuation rate/%
CO₂ pressure/MPa	Porosity/PPI	p_1-peak	p_2-peak	p_1-peak	p_2-peak
0	10	67.13	76.15
	20	55.25	52.79
	40	15.90	21.98
0.2	10	60.05	60.91	10.54	20.96
	20	51.56	47.95	6.68	9.17
	40	9.00	20.11	43.40	8.51
0.4	10	55.42	56.38	17.44	25.96
	20	48.89	46.92	11.51	11.12
	40	7.50	20.73	52.83	5.69

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参考文献(13)

[1]	武双贺. 多孔材料对管道内爆炸火焰抑制的实验研究 [D]. 北京: 北京理工大学, 2018. WU S H. Experimental study on the suppression of explosion flame in pipelines with porous materials [D]. Beijing: Beijing Institute of Technology, 2018.
[2]	陈鹏, 黄福军, 何昕, 等. 多孔材料对管道内甲烷-空气预混火焰传播的影响 [J]. 工业安全与环保, 2016, 42(1): 49–52. doi: 10.3969/j.issn.1001-425X.2016.01.015 CHEN P, HUANG F J, HE X, et al. Effects of different porous foam upon premixed methane/air flame propagation in closed ducts [J]. Industrial Safety and Environmental Protection, 2016, 42(1): 49–52. doi: 10.3969/j.issn.1001-425X.2016.01.015
[3]	DUAN Y L, WANG S, YANG Y L, et al. Experimental study on methane explosion characteristics with different types of porous media [J]. Journal of Loss Prevention in the Process Industries, 2020, 69: 104370.
[4]	王涛. 管道内甲烷爆炸特性及CO₂抑爆的实验与数值模拟研究 [D]. 西安: 西安科技大学, 2014. WANG T. Experimental and numerical studies on methane explosion and the suppression effect of CO₂ in vessel [D]. Xi’an: Xi’an University of Science and Technology, 2014.
[5]	路长, 张运鹏, 朱寒, 等. 氮气喷出对管道瓦斯爆炸的阻爆研究 [J]. 爆炸与冲击, 2020, 40(4): 042101. doi: 10.11883/bzycj-2019-0106 LU L, ZHANG Y P, ZHU H, et al. The spurted nitrogen preventing the gas explosion in pipe [J]. Explosion and Shock Waves, 2020, 40(4): 042101. doi: 10.11883/bzycj-2019-0106
[6]	钱海林, 王志荣, 蒋军成, 等. N₂/CO₂混合气体对甲烷爆炸的影响 [J]. 爆炸与冲击, 2012, 32(4): 445–448. doi: 10.3969/j.issn.1001-1455.2012.04.016 QIAN H L, WANG Z R, JIANG J C, et al. Influence of N₂/CO₂ mixture on methane explosion [J]. Explosion and Shock Waves, 2012, 32(4): 445–448. doi: 10.3969/j.issn.1001-1455.2012.04.016
[7]	YU M, LIU M, WEN X, et al. Experimental study on suppression of methane explosion by porous media and ultra-fine water mist [J]. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2022, 44(1): 1751–1764.
[8]	郭成成, 王飞, 刘红威, 等. 惰性气体-细水雾抑制瓦斯爆炸对比分析 [J]. 煤矿安全, 2018, 49(6): 164–167. doi: 10.13347/j.cnki.mkaq.2018.06.043 GUO C C, WANG F, LIU H W, et al. Comparative analysis of gas explosion suppression by water mist of inert gas [J]. Safety in Coal Mines, 2018, 49(6): 164–167. doi: 10.13347/j.cnki.mkaq.2018.06.043
[9]	PEI B, YANG Y, LI J, et al. Experimental study on suppression effect of inert gas two fluid water mist system on methane explosion [J]. Procedia Engineering, 2018, 11: 565–574.
[10]	郑露露, 龙凤英, 温子阳, 等. 多孔材料-CO₂对CH₄/H₂抑爆失效研究 [J]. 安全, 2022, 43(9): 24–30,36. ZHENG L L, LONG F Y, WEN Z Y, et al. Study on explosion suppression failure of porous material-CO₂ to CH₄/H₂ [J]. Safety & Security, 2022, 43(9): 24–30,36.
[11]	PEI B, YU M, CHEN L, et al. Experimental study on the synergistic inhibition effect of nitrogen and ultrafine water mist on gas explosion in a vented duct [J]. Journal of Loss Prevention in the Process Industries, 2016, 40: 546–553. doi: 10.1016/j.jlp.2016.02.005
[12]	WANG C, HUANG F L, ADDAI E K, et al. Effect of concentration and obstacles on flame velocity and overpressure of methane-air mixture [J]. Journal of Loss Prevention in the Process Industries, 2016, 43: 302–310. doi: 10.1016/j.jlp.2016.05.021
[13]	ZHANG J F, SUN Z Q, ZHENG Y M, et al. Coupling effects of foam ceramics on the flame and shock wave of gas explosion [J]. Safety Science, 2012, 50(4): 797–800. doi: 10.1016/j.ssci.2011.08.031