微米铝粉在氢气/水蒸气氛围下燃烧机制研究

doi:10.16265/j.cnki.issn1003-3033.2023.S1.2479

中国安全科学学报 ›› 2023, Vol. 33 ›› Issue (S1): 196-202.doi: 10.16265/j.cnki.issn1003-3033.2023.S1.2479

微米铝粉在氢气/水蒸气氛围下燃烧机制研究

张术琳(), 严翔, 龙睿基, 鲁义, 施式亮

湖南科技大学资源环境与安全工程学院, 湖南湘潭 411201

收稿日期:2023-02-14 修回日期:2023-04-08 出版日期:2023-06-30
作者简介:
张术琳 (1992—),女,山东烟台人,博士,讲师,主要从事矿井热动力灾害防治、爆炸安全防护技术等方向的研究。E-mail:1010111@hnust.edu.cn。
鲁义教授
施式亮教授
基金资助:
湖南省重点研发计划项目(2022GK2042); 湖南省自然科学基金资助(2023JJ40292); 湖南省教育厅科学研究项目(22C0240); 湖南科技大学博士后科研基金资助(E62203)

Study on combustion mechanism of micron-sized aluminum powder in hydrogen/water vapor atmosphere

ZHANG Shulin(), YAN Xiang, LONG Ruiji, LU Yi, SHI Shiliang

School of Resource & Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan Hunan 411201, China

Received:2023-02-14 Revised:2023-04-08 Published:2023-06-30

摘要/Abstract

摘要：

为探究铝制品在生产加工过程中蕴含的气粉两相体系爆炸风险,揭示铝粉在潮湿环境下燃烧机制,基于Chemkin软件模拟微米铝粉在氢气/水蒸气氛围下微观反应进程,结合铝粉气相燃烧机制,构建包含Al、O、AlO、AlO₂、AlH等28组分、68步基元反应的化学反应动力学模型。通过改变水蒸气与空气的摩尔比,分析水蒸气含量对燃烧温度敏感性的影响,以及对关键自由基的摩尔分数和最大生成速率的影响。结果表明:基于温度敏感性分析,发现水蒸气含量的增加会降低微米铝粉平衡时的燃烧温度。其中,影响平衡时燃烧温度的关键基元反应R32(即Al+H₂O=AlOH+H),由开始的先促进升温后抑制升温变为完全抑制升温。基于生成速率分析,得出水蒸气含量的增加会降低O和AlO自由基平衡时的摩尔分数。基于反应路径分析获取微米铝粉在氢气/水蒸气氛围下燃烧的关键反应路径,其中,Al→O、Al→AlO、Al₂O₂→AlO等基元反应较强。

关键词: 微米铝粉, 氢气/水蒸气氛围, 燃烧机制, 基元反应, Chemkin模拟计算

Abstract:

In order to study the explosion risk of the gas-powder two-phase system contained in the production and processing of aluminum products, the combustion mechanism of aluminum powder in humid environments was revealed. The microscopic reaction process of micron-sized aluminum powder in a hydrogen/water vapor atmosphere was simulated based on Chemkin software. According to the gas phase combustion mechanism of aluminum powder, a kinetic model of a chemical reaction containing 28 components (Al, O, AlO, AlO₂, AlH, etc.,) and 68-step elementary reactions was constructed. By varying the mole ratio of water vapor to air, the effects of water vapor content on the sensitivity of combustion temperature, as well as the mole fraction and maximum rate of production of key free radicals were analyzed. The results show that according to the temperature sensitivity analysis, the increase in water vapor content will reduce the combustion temperature of micron-sized aluminum powder when reaching equilibrium. Specifically, the key elementary reaction R32 (Al + H₂O = AlOH + H), which affects the combustion temperature at equilibrium, changes from promoting the temperature rise at the beginning and then suppressing the temperature rise to completely suppressing the temperature rise. According to the analysis of the rate of production, the increase in water vapor content reduces the mole fraction of O and AlO free radicals when reaching equilibrium. According to the reaction path analysis, the key reaction path of micron-sized aluminum powder during combustion in a hydrogen/water vapor atmosphere is obtained, among which Al→O, Al→AlO, Al₂O₂→AlO, and other elementary reactions are strong.

Key words: micron-sized aluminum powder, hydrogen/water vapor atmosphere, combustion mechanism, elementary reactions, Chemkin simulation calculation

张术琳, 严翔, 龙睿基, 鲁义, 施式亮. 微米铝粉在氢气/水蒸气氛围下燃烧机制研究[J]. 中国安全科学学报, 2023, 33(S1): 196-202.

ZHANG Shulin, YAN Xiang, LONG Ruiji, LU Yi, SHI Shiliang. Study on combustion mechanism of micron-sized aluminum powder in hydrogen/water vapor atmosphere[J]. China Safety Science Journal, 2023, 33(S1): 196-202.

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参考文献 16

[1]	8·2昆山工厂爆炸事故[EB/OL]. (2016-10-31). https://baike.baidu.com/item/8·2昆山工厂爆炸事故/15199616?fr=aladdin.
[2]	程关兵, 王国大, 黄燕晓. 氢气爆燃转爆轰特性试验研究[J]. 中国安全科学学报, 2016, 26(12):64-68.
	CHENG Guanbing, WANG Guoda, HUANG Yanxiao. Experimental study on characteristics of hydrogen deflagration to detonation transition[J]. China Safety Science Journal, 2016, 26(12):64-68.
[3]	BIDABADI M, POORFAR A K, WANG Shaobin, et al. A comparative study of different burning time models for the combustion of aluminum dust particles[J]. Applied Thermal Engineering, 2016, 105:474-782. doi: 10.1016/j.applthermaleng.2016.03.022
[4]	BIDABADI M, ZADSIRJAN S, MOSTAFAVI S A. Radiation heat transfer in transient dust cloud flame propagation[J]. Journal of Loss Prevention in the Process Industries, 2013, 26(4): 862-868. doi: 10.1016/j.jlp.2013.03.002
[5]	CATOIRE L, LEGENDRE J F, GIRAUD M. Kinetic model for aluminum-sensitized ram accelerator combustion[J]. Journal of propulsion and power, 2003, 19(2):196-202. doi: 10.2514/2.6118
[6]	BOJKO B T, DESJARDIN P E, WASHBURN E B. On modeling the diffusion to kinetically controlled burning limits of micron-sized aluminum particles[J]. Combustion and Flame, 2014, 161:3 211-3 221. doi: 10.1016/j.combustflame.2014.06.011
[7]	陈刚, 张晓蕾, 徐帅, 等. 我国2005—2020年粉尘爆炸事故统计分析[J]. 中国安全科学学报, 2022, 32(8):76-83. doi: 10.16265/j.cnki.issn1003-3033.2022.08.0812
	CHEN Gang, ZHANG Xiaolei, XU Shuai, et al. Statistical analysis of dust explosion accidents in China from 2005 to 2020[J]. China Safety Science Journal, 2022, 32(8):76-83. doi: 10.16265/j.cnki.issn1003-3033.2022.08.0812
[8]	纪文涛. 气粉两相混合体系爆炸及泄放特性研究[D]. 大连: 大连理工大学, 2018.
	JI Wentao. Study on explosion and discharge characteristics of gas-powder two-phase hybrid system[D]. Dalian: Dalian University of Technology, 2018.
[9]	CASHDOLLAR K L, HERTZBERG M. 20-l explosibility test chamber for dusts and gases[J]. Review of Scientific Instruments, 1985, 56(4):596-602 doi: 10.1063/1.1138295
[10]	姜海鹏. 固态抑爆剂抑制铝粉尘爆炸机理研究[D]. 大连: 大连理工大学, 2019.
	JIANG Haipeng. Study on the mechanism of solid explosion suppressant to inhibit aluminum dust explosion[D]. Dalian: Dalian University of Technology, 2019.
[11]	SWIHART M T, CATOIRE L, LEGRAND B, et al. Rate constants for the homogeneous gas-phase Al/HCl combustion chemistry[J]. Combustion and Flame, 2003, 132(1):91-101. doi: 10.1016/S0010-2180(02)00426-1
[12]	FERNADEZ-GALISTEO D, SANCHEZ A L, LINAN A, et al. One-step reduced kinetics for lean hydrogen-air deflagration[J]. Combustion and Flame, 2009, 156(5):985-996. doi: 10.1016/j.combustflame.2008.10.009
[13]	STAIRK A M, KULESHOV P S, SHARIPOV A S, et al. Numerical analysis of nanoaluminum combustion in steam[J]. Combustion and Flame, 2014, 161(6):1 659-1 667. doi: 10.1016/j.combustflame.2013.12.007
[14]	BURCAT A, RUSCIC B. Third millennium ideal gas and condensed phase thermochemical database for combustion with updates from active thermochemical tables[DB/OL]. (2003-03-13). http://garfield.chem.elte.hu/Burcat/burcat.html.
[15]	PARR T P, JOHNSON C, HANSON-PARR D, et al. Evaluation of advanced fuels for underwater propulsion[C]. 39^th JANNAF Combustion Subcommittee Meeting, 2003.
[16]	HUANG Ying, RISHA G A, YANG V, et al. Analysis of nano-aluminum particle dust cloud combustion in different oxidizer environments[C]. 43^rd AIAA Aerospace Sciences Meeting and Exhibit, 2005:DOI:10.2514/6.2005-738.

微米铝粉在氢气/水蒸气氛围下燃烧机制研究

Study on combustion mechanism of micron-sized aluminum powder in hydrogen/water vapor atmosphere

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