Influence of dispersion pressure on methane explosion suppression effect of KHCO3 cold aerosol

doi:10.16265/j.cnki.issn1003-3033.2021.07.010

Abstract

Abstract: In order to achieve optimum suppression effect of active dusting explosion suppression system, influence of dispersion pressure on dispersion of KHCO₃ cold aerosols was tested, and suppression experiment of the aerosol on explosion of 9.5% methane-air premixed gas was carried out via a 5 L tube testing platform. And suppression effect of KHCO₃ cold aerosols on methane explosion pressure and flame propagation under different dispersion pressure was investigated. The results show that dispersion pressure significantly impacts dispersion of KHCO₃ cold aerosol, thereby affecting its suppression performance on methane explosion. When at low pressure, the aerosol is hard to disperse, so it shows poor explosion suppression effect and can only inhibit early stage flame. But as the pressure increases, its suppression effect gradually improves. However, when it is fully dispersed, such effect can rarely be improved by continuing to increase dispersion pressure.

Key words: dispersion pressures, KHCO₃ cold aerosol, explosion suppression effect, methane explosion suppression, dispersion condition

CLC Number:

X932

WANG Yan, LIN Sen, LI Zhong, WEN Xiaoping, ZHENG Ligang , JI Wentao. Influence of dispersion pressure on methane explosion suppression effect of KHCO₃ cold aerosol[J]. China Safety Science Journal, 2021, 31(7): 70-75.

References

[1] 张津嘉, 许开立, 王延瞳, 等. 特别重大瓦斯爆炸事故致因机制研究[J]. 中国安全科学学报, 2017, 27(1):48-52.
ZHANG Jinjia, XU Kaili, WANG Yantong, et al. Study on causation mechanism of extraordinary serious gas explosion accidents in coalmines[J]. China Safety Science Journal, 2017, 27(1):48-52.
[2] 孙超伦, 张一民, 裴蓓, 等. 惰气/赤泥两相抑爆剂抑制瓦斯爆炸试验研究[J]. 中国安全科学学报, 2020, 30(10):112-118.
SUN Chaolun, ZHANG Yimin, PEI Bei, et al. 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.
[3] WANG Bing, RAO Zhuming, XIE Qiaofeng, et al. Brief review on passive and active methods for explosion and detonation suppression in tubes and galleries[J]. Journal of Loss Prevention in the Process Industries, 2017,49: 280-290.
[4] 田丹青, 胡双启, 周温, 等. ZYBG型瓦斯输送管道主动抑爆装置技术研究[J]. 煤炭技术, 2015,34(2): 154-156.
TIAN Danqing, HU Shuangqi, ZHOU Wen, et al. Research on ZYBG type gas pipeline active explosion suppression device technology[J]. Coal Technology, 2015,34(2): 154-156.
[5] 刘德奇. 瓦斯输送管道爆炸自动喷粉抑爆技术[J]. 煤炭技术, 2014,33(5): 49-51.
LIU Deqi. Active powder explosion suppression technology for gas carried in pipelines explosion[J]. Coal Technology, 2014,33(5): 49-51.
[6] 刘福燕, 刘天军, 刘娟, 等. 冷气溶胶灭火剂作用下狭长隧道火灾的扑救降温过程的数值模拟[J]. 工业安全与环保, 2019,45(6): 15-18.
LIU Fuyan, LIU Tianjun, LIU Juan, et al. Numerical simulation of the cooling process of a narrow tunnel fire under the action of cold aerosol fire extinguishing agentset[J]. Industrial Safety and Environmental Protection, 2019,45(6): 15-18.
[7] 张莹, 王琪, 汪大占. 环保型冷气溶胶灭火剂的研究与发展[J]. 决策探索(中), 2019(1): 70.
[8] 任常兴, 张玉贤, 王婕, 等. 冷气溶胶油气环境抑爆效能研究[J]. 消防技术与产品信息, 2018,31(11): 57-60.
REN Changxing, ZHANG Yuxian, WANG Jie, et al. Study on explosion suppression effectiveness of cold aerosol in oil gas environment[J]. Fire Technique and Products Information, 2018,31(11): 57-60.
[9] 戴彪, 张树海, 陈亚红. 新型冷气溶胶灭火剂灭火性能的研究[J]. 科学技术与工程, 2016, 16(28): 308-312.
DAI Biao, ZHANG Shuhai, CHEN Yahong. Novel cold aerosol fire extinguishing agent performance[J]. Science Technology and Engineering, 2016, 16(28): 308-312.
[10] 黄超, 李继红. 钇稳定氧化锆气溶胶阻爆效率研究[J]. 消防科学与技术, 2013,32(8): 897-899.
HUANG Chao, LI Jihong. Study on the explosion retardant property of ZrO₂(Y₂O₃) nanopowder aerosol[J]. Fire Science and Technology, 2013,32(8): 897-899.
[11] REN Changxing, SUN Xiaotao, ZHANG Xin, et al. Research on suppressing premixed fuel-air explosion by ultra-fine cold aerosol[J]. Procedia Engineering, 2014,84: 340-346.
[12] 张博, 张奇, 谭汝媚. 喷粉压力及点火延迟时间对粉尘爆炸参数的影响[J]. 高压物理学报, 2014,28(2): 183-190.
ZHANG Bo, ZHANG Qi, TAN Rumei. Influence of dispersion pressure and ignition delay time on the dust explosion parameters[J]. Chinese Journal of High Pressure Physics, 2014,28(2): 183-190.
[13] 李菲, 刘义, 赵东风, 等. 反溶剂重结晶法制备超细碳酸氢钾粉体[J]. 现代化工, 2012,32(4): 73-75.
LI Fei, LIU Yi, ZHAO Dongfeng, et al. Preparation of ultrafine potassium bicarbonate by anti-solvent recrystallization[J].Modern Chemical Industry, 2012,32(4): 73-75.
[14] 陈春燕, 龙思华, 肖国清, 等. 点火延迟时间对甘薯粉尘爆炸的影响研究[J]. 中国安全生产科学技术, 2016,12(12): 171-175.
CHEN Chunyan, LONG Sihua, XIAO Guoqing, et al. Study on influence of ignition delay time on explosion of sweet potato dust[J]. Journal of Safety Science and Technology, 2016,12(12): 171-175.
[15] 王亚磊, 郑立刚, 于水军, 等. NaHCO₃分散状况对其抑制甲烷爆炸的影响研究[J]. 中国安全科学学报, 2018,28(11): 80-85.
WANG Yalei, ZHENG Ligang, YU Shuijun, et al. Effect of dispersion condition of NaHCO₃ on inhibiting methane-air mixture explosion[J]. China Safety Science Journal, 2018,28(11): 80-85.

Influence of dispersion pressure on methane explosion suppression effect of KHCO₃ cold aerosol

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	LI Sen, WANG Shaopeng, LIN Jin, LU Shouxiang, LI Qian, CHEN Guoqing. Experimental study on ship fire smoke control in large flat-space [J]. China Safety Science Journal, 2024, 34(5): 162-167.
[2]	LIU Chunyuan, ZHANG Guowei, YANG Lin, OUYANG Chenliang, ZHANG Zuorui. Study on inhibition effect of hydrogel on thermal runaway of ternary lithium-ion battery [J]. China Safety Science Journal, 2024, 34(5): 186-194.
[3]	ZHANG Ying, HUANG Guohong, LONG Yujiao. Simulation study on fire spread of different exterior insulation facade structures in high rise buildings [J]. China Safety Science Journal, 2024, 34(5): 122-128.
[4]	PENG Min, PAN Xiangxiao, HE Kun, LI Zhonghui, ZHU Guoqing. Study on smoke transport characteristics of fire inside rail train with multiple lateral openings [J]. China Safety Science Journal, 2024, 34(5): 129-138.
[5]	ZHANG Mingzhen, DUAN Jiangzhong, LIANG Zhaowei, GUO Junjie, CHAI Dashan. Firework detection method based on improved YOLO-V5 algorithm [J]. China Safety Science Journal, 2024, 34(5): 155-161.
[6]	ZHANG Licong, LI Siman. Analysis of gas-liquid two-phase coordinated explosion and flame retardant effect based on fundamental reaction [J]. China Safety Science Journal, 2024, 34(3): 101-108.
[7]	XU Yongliang, SUN Meng, WANG Lanyun, WANG Yungang. Review of fire smoke flow characteristics and early warning prevention and control of mine belt conveyor [J]. China Safety Science Journal, 2024, 34(3): 117-128.
[8]	KANG Wendong, LU Yi, ZHANG Zuobin, LI He, XING Yuting, ZHOU Qinyun. Effects of inorganic salt and polysaccharide mixtures on physicochemical properties of foam extinguishing agents [J]. China Safety Science Journal, 2024, 34(3): 137-147.
[9]	CHEN Dawei, PANG Shijun, XI Yanhong. Study on evacuation of passengers from train compartment fires in low-vacuum tunnels [J]. China Safety Science Journal, 2024, 34(3): 186-191.
[10]	BAI Yangyang, LIU Changchun, LI Cunying, AI Guodong, LIU Siqi, SONG Fangzhi. Jet trajectory model of fire water cannon based on Euler method [J]. China Safety Science Journal, 2024, 34(3): 200-205.
[11]	ZHANG Shaoyu, WANG Yue, DONG Haibin, CHEN Ye. Analysis of thermal runaway explosion overpressure and liquid nitrogen inerting effect of lithium battery [J]. China Safety Science Journal, 2024, 34(3): 39-44.
[12]	HU Yang, TAO Hong, SONG Minhang, LYU Shuo, ZHANG Haixia. Study on evolution process of deflagration wave system of premixed gas in long straight pipeline [J]. China Safety Science Journal, 2024, 34(3): 55-62.
[13]	MA Tianming, HUANG Chuyuan, CHEN Xianfeng. Heterogeneous vehicle routing problem of hazardous materials transportation considering carbon emissions [J]. China Safety Science Journal, 2024, 34(1): 193-199.
[14]	PENG Shanbi, LI Wei, TANG Ping. Numerical simulation of gas explosion in underground unventilated kitchen based on FLACS [J]. China Safety Science Journal, 2024, 34(1): 215-222.
[15]	WANG Xiaoling, LIU Zhenqi. Study on explosion suppression characteristics of water mist containing potassium compounds outside methane-air premixed area [J]. China Safety Science Journal, 2024, 34(1): 150-157.