Study on suppression effects of H2/TiH2 mixed explosion with composite modified dry water

doi:10.16265/j.cnki.issn1003-3033.2026.09.0592

Abstract

Abstract:

Metal hydride-based solid-state hydrogen storage has the advantage of high energy density. However, metal hydride dust/H₂ gas-powder two-phase mixtures are easily formed during production. This leads to an extremely high explosion risk. To efficiently suppress suppression of metal hydride dust/H₂ gas-powder two-phase mixture, a novel C₆F₁₂O and K₂CO₃ composite modified dry water, denoted as PC-PMDW, This material was developed based on inert dilution, physical cooling, and chemical chain inhibition. A closed explosion pipeline system was used. The explosion-suppression performance of PC-PMDW at mass fractions of 40%-100% was compared with that of single K₂CO₃-modified dry water (PC-DW). The results show that the explosion-suppression performance of PC-PMDW is significantly better than that of PC-DW. At a mass fraction of 100%, the explosion pressure is reduced by 70.27%. The average flame propagation velocity is reduced by 91.08%, and the flame can no longer propagate to the end of the pipeline. Based on test of the microstructure and composition of the explosion products, the suppression effect is mainly attributed to synergistic effects. These effects include heat absorption evaporation of C₆F₁₂O and water, dilution of combustible gases by CO₂ released from K₂CO₃,thermal decomposition, capture of key radicals such as H, O, and OH by active potassium compounds and fluorine-containing radicals, and oxygen isolation through surface coating, thereby weakening thermal feedback and interrupting the explosion chain reaction.

Key words: H₂/TiH₂ mixed explosion, perfluorohexanone (C₆F₁₂O) and potassium carbonate (K₂CO₃) composite modified dry water (PC-PMDW), explosion suppression performance, flame propagation, explosion suppression mechanism

CLC Number:

X932爆炸安全与防火、防爆

Pei Bei, Lyu Hang, Zhou Lei, Lu Chang, Ji Wentao, Kan Qiang. Study on suppression effects of H₂/TiH₂ mixed explosion with composite modified dry water[J]. China Safety Science Journal, 2026, 36(9): 17-25.

Figures/Tables 8

Fig.1

Table 1

Fig.2

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

References 16

[1]	王中华. 钛及其氢化物粉尘云的火焰传播特性及温度分布特征研究[D]. 淮南: 安徽理工大学, 2022.
	Wang Zhonghua. Research on flame propagation characteristics and temperature distribution characteristics of titanium and its hydride dust clouds[D]. Huainan: Anhui University of Science and Technology, 2022.
[2]	王瑞. 悬浮TiH₂粉尘气-固两相燃烧的互馈效应和抑爆机理研究[D]. 淮南: 安徽理工大学, 2024.
	Wang Rui. Study on the mutual feed effect and explosion suppression mechanism of gas-solid two-phase combustion of suspended TiH₂ dust[D]. Huainan: Anhui University of Science and Technology, 2024.
[3]	Cheng Yangfan, Wu Hongbo, Liu Rong, et al. Combustion behaviors and explosibility of suspended metal hydride TiH₂ dust[J]. International Journal of Hydrogen Energy, 2020, 45(21):12216-12 224. doi: 10.1016/j.ijhydene.2019.10.211
[4]	Wang Rui, Cheng Yangfan, Li Shizhou, et al. Inhibitory effects of typical inert gases on the flame propagation and structures in TiH₂ dust clouds[J]. Powder Technology, 2023, 427:DOI:10.1016/j.powtec.2023.118795.
[5]	Li Guoliang, Gao Wei, Liu Junpeng, et al. Suppression effect of CO₂ on ignition and combustion of AlH₃-nanoparticles: a molecular dynamics study[J]. International Journal of Hydrogen Energy, 2024, 84: DOI:10.1016/j.ijhydene.2024.08.217.
[6]	李世周. 典型固体抑爆剂对TiH₂粉尘云燃爆特性影响及抑爆机理研究[D] 淮南: 安徽理工大学, 2024.
	Li Shizhou. Study on the effect of typical solid explosion suppressants on the explosion characteristics and explosion suppression mechanism of TiH₂ dust cloud[D]. Huainan: Anhui University of Science and Technology, 2024.
[7]	Xue Chenlu, Jiang Haipeng, Cheng Jiafeng, et al. Inhibition mechanism and effect assessment of alkali (Earth) metal compound-based inhibitors on aluminum hydride explosion[J]. Chemical Engineering Journal, 2024, 501:DOI:10.1016/j.cej.2024.157771.
[8]	Xue Chenlu, Jiang Haipeng, Zhu Chenchen, et al. Dry water consisting of nano SiO₂ modified by fluorinated surfactant: applied to AlH₃ explosion suppression[J]. Powder Technology, 2024, 433:DOI:10.1016/j.powtec.2023.119246.
[9]	Xue Chenlu, Jiang Haipeng, Zhu Chenchen, et al. A novel dry water with perfluorohexanone for explosion suppression of AlH₃[J]. Chemical Engineering Science, 2023, 271:DOI:10.1016/j.ces.2023.118575.
[10]	Tian Siyu, Qin Botao, Ma Dong, et al. Suppressive effects of alkali metal salt modified dry water material on methane-air explosion[J]. Energy, 2023, 285:DOI:10.1016/j.energy.2023.129547.
[11]	Yang Zhe, Luo Zhenmin, Zhou Shangyong, et al. The deflagration suppression of methane-air by sodium salt-modified dry water: experimental and kinetic investigation[J]. Journal of Loss Prevention in the Process Industries, 2025, 98:DOI:10.1016/j.energy.2023.129547.
[12]	Mu Xuemeng, Cong Haiyong, Shao Zhuyu, et al. Experimental and theoretical research on the inhibition performance of ethanol gasoline/air explosion by C₆F₁₂O[J]. Journal of Loss Prevention in the Process Industries, 2023, 83:DOI:10.1016/j.jlp.2023.105088.
[13]	赵腾龙, 王枫潇, 李梓豪, 等. 活性复合粉体抑制甲烷爆炸的效能试验研究[J]. 中国安全科学学报, 2026, 36(2):180-188. doi: 10.16265/j.cnki.issn1003-3033.2026.02.0668
	Zhao Tenglong, Wang Fengxiao, Li Zihao, et al. Study on inhibition effect of active composite powder for methane explosions[J]. China Safety Science Journal, 2026, 36(2):180-188. doi: 10.16265/j.cnki.issn1003-3033.2026.02.0668
[14]	Song Shizemin, Meng Xiangbao, Shi Xunxian, et al. Characterization and microscopic mechanism analysis of urea-modified dry water powders for inhibiting dust explosion of aluminum-magnesium alloys[J]. Powder Technology, 2025, 455:DOI:10.1016/j.powtec.2025.120760.
[15]	贾进章, 田秀媛. 钾盐粉体抑制瓦斯爆炸超压特性研究[J]. 中国安全科学学报, 2025, 35(7):48-56. doi: 10.16265/j.cnki.issn1003-3033.2025.07.1624
	Jia Jinzhang, Tia Xiuyuan. Study on the overpressure characteristics of potassium salt powder inhibiting gas explosion[J]. China Safety Science Journal, 2025, 35(7):48-56. doi: 10.16265/j.cnki.issn1003-3033.2025.07.1624
[16]	李经纬, 刘旭文, 殷广煜, 等. 含氟化合物对金属燃料反应活性调控研究进展[J]. 火炸药学报, 2024, 47(11):955-977.
	Li Jingwei, Liu Xuwen, Yin Guangyu, et al. Research progress on the regulation of reactivity of metal fuels by fluorine-containing compounds[J]. Journal of Explosives and Explosives, 2024, 47(11):955-977.

Study on suppression effects of H₂/TiH₂ mixed explosion with composite modified dry water

RichHTML

PDF

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 8

References 16

Related Articles 15

Recommended Articles

Metrics

Comments

编号	工况条件	质量分数/%	编号	工况条件	质量分数/%
1	无添加	0	2	PC-DW	40
3	PC-DW	60	4	PC-DW	80
5	PC-DW	100	6	PC-PMDW	40
7	PC-PMDW	60	8	PC-PMDW	80
9	PC-PMDW	100

[1]	Luo Zhenmin, Hao Ruolin, Su Bin, Liu Litao, Liu Lu, Wang Tao. Review on explosion hazard characteristics of syngas and its inerting suppression technology [J]. China Safety Science Journal, 2026, 36(9): 1-8.
[2]	Mao Xiangzheng, Xu Guan'gan, Song Peng, Hu Yufeng, Xing Huadao, Xie Lifeng. Effects of flame arrester aperture ratio on propagation characteristics of premixed gasoline vapor-air flames [J]. China Safety Science Journal, 2026, 36(9): 217-224.
[3]	Yang Xufeng, Jiang Baoping, Yang Wen, Zhang Kun, Zhang Yuchun. Effects of directional venting duct structure on flame propagation and overpressure evolution of hydrogen-blended natural gas [J]. China Safety Science Journal, 2026, 36(9): 94-102.
[4]	ZHAO Tenglong, WANG Fengxiao, LI Zihao, YIN Xiaotong. Study on inhibition effect of active composite powder for methane explosions [J]. China Safety Science Journal, 2026, 36(2): 180-188.
[5]	LI Shengnan, YU Dingqi, GAO Ke. Study on explosion characteristics of mixture of methane/ammonia/air in tunneling roadways [J]. China Safety Science Journal, 2026, 36(1): 121-129.
[6]	DING Qingquan, YUAN Bihe, CHEN Xianfeng, HUANG Chuyuan, HE Yunlong, ZHANG Yuduo. Study on explosion suppression performance of PVDF spherical porous material [J]. China Safety Science Journal, 2023, 33(1): 177-182.
[7]	WANG Yan, LI Zhong, ZHANG Yimin, WANG Yang, YANG Jingjing, JI Wentao. Suppression characteristics and mechanism of different hydrogen phosphates on ethylene explosion [J]. China Safety Science Journal, 2022, 32(5): 48-54.
[8]	YU Yangyang, LIU Lehai, ZHANG Junhong, JI Ning, MENG Xiangde, ZHOU Tianyi. Comparative analysis of explosion suppression performance of nonmetallic spherical spacers and mesh aluminum alloys [J]. China Safety Science Journal, 2022, 32(10): 100-106.
[9]	YUAN Bihe, ZHANG Yuduo, YUN Yalong, HUANG Chuyuan, CHEN Xianfeng, CHEN Gongqing. Study on explosion suppression performance of porous polypropylene [J]. China Safety Science Journal, 2021, 31(8): 91-96.
[10]	WANG Lei. Experimental study on effect of spherical obstacle on gas deflagration flame [J]. China Safety Science Journal, 2021, 31(3): 54-59.
[11]	SHI Yongguo, TANG Qing, HU Siyuan, DING Chao, WANG Xinqun. Inerting effects of flue gas on explosion of powder coating/air mixtures [J]. China Safety Science Journal, 2021, 31(11): 71-77.
[12]	HUANG Zichao, SI Rongjun. Experimental study on suppression of gas and coal dust explosion by powder clouds [J]. China Safety Science Journal, 2020, 30(3): 74-81.
[13]	JING Guoxun, ZHANG Shengqi, DUAN Xinwei, GUO Shaoshuai, LIU Chuang. Impact of coal dust concentration on gas explosion in vertical pipelines [J]. China Safety Science Journal, 2020, 30(3): 15-20.
[14]	CHENG Fangming, CHANG Zhuchuan, GAO Tongtong, JI Pengfei, LUO Zhenmin. Influence of multi-hole obstacles at different locations on premixed flame's propagation [J]. China Safety Science Journal, 2020, 30(11): 114-120.
[15]	SUN Chaolun, ZHANG Yimin, PEI Bei, WANG Yan, MENG Xiangqing, JI Wentao. Experimental study on suppression effects of inert gas/red mud two-phase inhibitors on gas explosion [J]. China Safety Science Journal, 2020, 30(10): 112-118.