Correlation between pressure characteristics and thermochemical kinetics during suppression of micro/nano PMMA dust explosion

GUO Rui; LI Nan; ZHANG Xinyan; ZHANG Yansong; XU Chang; ZHANG Gongyan; ZHAO Xing; XIE Yuxuan; HAN Zhelin

doi:10.11883/bzycj-2023-0058

Volume 43 Issue 12

Dec. 2023

Turn off MathJax

Article Contents

Article Navigation > Explosion And Shock Waves > 2023 > 43(12): 125401

GUO Rui, LI Nan, ZHANG Xinyan, ZHANG Yansong, XU Chang, ZHANG Gongyan, ZHAO Xing, XIE Yuxuan, HAN Zhelin. Correlation between pressure characteristics and thermochemical kinetics during suppression of micro/nano PMMA dust explosion[J]. Explosion And Shock Waves, 2023, 43(12): 125401. doi: 10.11883/bzycj-2023-0058

Citation:

GUO Rui, LI Nan, ZHANG Xinyan, ZHANG Yansong, XU Chang, ZHANG Gongyan, ZHAO Xing, XIE Yuxuan, HAN Zhelin. Correlation between pressure characteristics and thermochemical kinetics during suppression of micro/nano PMMA dust explosion[J]. Explosion And Shock Waves, 2023, 43(12): 125401. doi: 10.11883/bzycj-2023-0058

Citation:

GUO Rui, LI Nan, ZHANG Xinyan, ZHANG Yansong, XU Chang, ZHANG Gongyan, ZHAO Xing, XIE Yuxuan, HAN Zhelin. Correlation between pressure characteristics and thermochemical kinetics during suppression of micro/nano PMMA dust explosion[J]. Explosion And Shock Waves, 2023, 43(12): 125401. doi: 10.11883/bzycj-2023-0058

PDF( 4260 KB)

Correlation between pressure characteristics and thermochemical kinetics during suppression of micro/nano PMMA dust explosion

doi: 10.11883/bzycj-2023-0058

GUO Rui^1
,,
LI Nan¹,
ZHANG Xinyan^{1, 2, 3
,
,},
ZHANG Yansong^{1, 2, 3},
XU Chang¹,
ZHANG Gongyan¹,
ZHAO Xing¹,
XIE Yuxuan¹,
HAN Zhelin¹

1.
College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, China
2.
Mine Disaster Prevention and Control-Ministry of State Key Laboratory Breeding Base, Shandong University of Science and Technology, Qingdao 266590, Shandong, China
3.
Qingdao Intelligent Control Engineering Center for Production Safety Fire Accident, Qingdao 266590, Shandong , China

Received Date: 2023-02-23
Rev Recd Date: 2023-04-23

Available Online: 2023-04-28

Publish Date: 2023-12-12

Abstract

Abstract

To reveal the explosion suppression mechanism of micron/nano polymethyl methacrylate (PMMA) dusts, the synchronous thermal analyzer and the 20-L explosion test device were used to test the pyrolysis oxidation characteristics and the explosion overpressure evolution characteristics of micro/nano PMMA dust under the intervention of NaHCO₃. Coats-Redfern method was used to calculate the kinetic parameters for the rapid pyrolysis of 30 μm and 100 nm PMMA and micro/nano mixtures, and the correlation between pressure characteristics and thermochemical kinetics during suppression of micro/nano PMMA dust explosion was analyzed, and then the suppression mechanism of dust explosion based on thermochemical kinetics was discussed by establishing the physical model of suppression mechanism of NaHCO₃ on micro/nano PMMA dust explosions. The results show that the pyrolysis oxidation processes of 30 μm and 100 nm PMMA dusts are suppressed by NaHCO₃, and the apparent activation energy and pre-exponential factor are increased. The maximum explosion pressure and the maximum explosion pressure rise rate of both micro- and nano-PMMA dusts are decreased obviously. In the pyrolysis stage of the mixture system, the suppression effect of NaHCO₃ is mainly dominated by physical suppression, including the cooling effect of both pyrolysis reaction and products as well as the dilution effect on the concentration of combustible reactant. In the oxidation stage of the mixture system, the suppression effect of NaHCO₃ is mainly dominated by chemical suppression. The free radicals are absorbed by the active groups NaOH, forming the Na↔NaOH suppression cycle. And for explosion suppressant, the smaller the particle size and the larger the adding mass ratio, the greater the apparent activation energy E of explosion mixture system, and the more significant the suppression effect. It is worth noting that compared with the maximum explosion pressure, the sensitivity of explosion pressure rise rate to the E increment of explosion mixture system is great, and nano-PMMA dust is more sensitive to the E increment of explosion mixture system than micro-PMMA dust, and the corresponding suppression effect of NaHCO₃ on nano-PMMA dust is more significant.
- dust explosion,
- explosion suppression mechanism,
- thermochemical kinetic,
- explosion intensity,
- correlation

FullText(HTML)

References(29)

References

[1]	曾文茹, 李疏芬, 周允基, 等. 聚甲基丙烯酸甲酯热氧化降解的化学动力学研究 [J]. 化学物理学报, 2003, 16(1): 64–68. DOI: 10.3969/j.issn.1674-0068.2003.01.013. ZENG W R, LI S F, ZHOU Y J, et al. Chemical kinetics on thermal oxidative degradation of PMMA [J]. Chinese Journal of Chemical Physics, 2003, 16(1): 64–68. DOI: 10.3969/j.issn.1674-0068.2003.01.013.
[2]	FATEH T, RICHARD F, ROGAUME T, et al. Experimental and modelling studies on the kinetics and mechanisms of thermal degradation of polymethyl methacrylate in nitrogen and air [J]. Journal of Analytical and Applied Pyrolysis, 2016, 120: 423–433. DOI: 10.1016/j.jaap.2016.06.014.
[3]	VIGNES A, KRIETSCH A, DUFAUD O, et al. Course of explosion behaviour of metallic powders: from micron to nanosize [J]. Journal of Hazardous Materials, 2019, 379: 120767. DOI: 10.1016/j.jhazmat.2019.120767.
[4]	YUAN Z, KHAKZAD N, KHAN F, et al. Dust explosions: a threat to the process industries [J]. Process Safety and Environmental Protection, 2015, 98: 57–71. DOI: 10.1016/j.psep.2015.06.008.
[5]	WEI L J, SU M Q, WANG K, et al. Suppression effects of ABC powder on explosion characteristics of hybrid C₂H₄/polyethylene dust [J]. Fuel, 2022, 310: 122159. DOI: 10.1016/j.fuel.2021.122159.
[6]	AMYOTTE P R. Some myths and realities about dust explosions [J]. Process Safety and Environmental Protection, 2014, 92(4): 292–299. DOI: 10.1016/j.psep.2014.02.013.
[7]	WANG Q H, YANG S P, JIANG J C, et al. Flame propagation and spectrum characteristics of CH₄-air gas mixtures in a vertical pressure relief pipeline [J]. Fuel, 2022, 317: 123413. DOI: 10.1016/j.fuel.2022.123413.
[8]	YANG J, LI Y H, YU Y, et al. Experimental investigation of the inerting effect of CO₂ on explosion characteristics of micron-size Acrylate Copolymer dust [J]. Journal of Loss Prevention in the Process Industries, 2019, 62: 103979. DOI: 10.1016/j.jlp.2019.103979.
[9]	YANG J, YU Y, LI Y H, et al. Inerting effects of ammonium polyphosphate on explosion characteristics of polypropylene dust [J]. Process Safety and Environmental Protection, 2019, 130: 221–230. DOI: 10.1016/j.psep.2019.08.015.
[10]	ADDAI E K, GABEL D, KRAUSE U. Experimental investigations of the minimum ignition energy and the minimum ignition temperature of inert and combustible dust cloud mixtures [J]. Journal of Hazardous Materials, 2016, 307: 302–311. DOI: 10.1016/j.jhazmat.2016.01.018.
[11]	JIANG H P, BI M S, PENG Q K, et al. Suppression of pulverized biomass dust explosion by NaHCO₃ and NH₄H₂PO₄ [J]. Renewable Energy, 2020, 147: 2046–2055. DOI: 10.1016/j.renene.2019.10.026.
[12]	HUANG C Y, CHEN X F, YUAN B H, et al. Suppression of wood dust explosion by ultrafine magnesium hydroxide [J]. Journal of Hazardous Materials, 2019, 378: 120723. DOI: 10.1016/j.jhazmat.2019.05.116.
[13]	ZHANG X Y, GAO W, YU J L, et al. Flame propagation mechanism of nano-scale PMMA dust explosion [J]. Powder Technology, 2020, 363: 207–217. DOI: 10.1016/j.powtec.2019.12.056.
[14]	ZHANG X Y, GAO W, YU J L, et al. Effect of flame propagation regime on pressure evolution of nano and micron PMMA dust explosions [J]. Journal of Loss Prevention in the Process Industries, 2020, 63: 104037. DOI: 10.1016/j.jlp.2019.104037.
[15]	ZHANG X Y, YU J L, YAN X Q, et al. Flame propagation behaviors of nano- and micro-scale PMMA dust explosions [J]. Journal of Loss Prevention in the Process Industries, 2016, 40: 101–111. DOI: 10.1016/j.jlp.2015.12.010.
[16]	ZHOU J H, LI B, MA D Q, et al. Suppression of nano-polymethyl methacrylate dust explosions by ABC powder [J]. Process Safety and Environmental Protection, 2019, 122: 144–152. DOI: 10.1016/j.psep.2018.11.023.
[17]	ZHOU J H, JIANG H P, ZHOU Y H, et al. Flame suppression of 100 nm PMMA dust explosion by KHCO₃ with different particle size [J]. Process Safety and Environmental Protection, 2019, 132: 303–312. DOI: 10.1016/j.psep.2019.10.027.
[18]	GAN B, LI B, JIANG H P, et al. Suppression of polymethyl methacrylate dust explosion by ultrafine water mist/additives [J]. Journal of Hazardous Materials, 2018, 351: 346–355. DOI: 10.1016/j.jhazmat.2018.03.017.
[19]	GAO W, MOGI T, SUN J H, et al. Effects of particle thermal characteristics on flame structures during dust explosions of three long-chain monobasic alcohols in an open-space chamber [J]. Fuel, 2013, 113: 86–96. DOI: 10.1016/j.fuel.2013.05.071.
[20]	GAO W, ZHONG S J, MOGI T, et al. Study on the influence of material thermal characteristics on dust explosion parameters of three long-chain monobasic alcohols [J]. Journal of Loss Prevention in the Process Industries, 2013, 26(1): 186–196. DOI: 10.1016/j.jlp.2012.10.007.
[21]	LIU A H, CHEN J Y, HUANG X F, et al. Explosion parameters and combustion kinetics of biomass dust [J]. Bioresource Technology, 2019, 294: 122168. DOI: 10.1016/j.biortech.2019.122168.
[22]	LI Q Z, ZHANG G Y, ZHENG Y N, et al. Investigation on the correlations between thermal behaviors and explosion severity of aluminum dust/air mixtures [J]. Powder Technology, 2019, 355: 582–592. DOI: 10.1016/j.powtec.2019.07.090.
[23]	JIANG H P, BI M S, GAO Z H, et al. Effect of turbulence intensity on flame propagation and extinction limits of methane/coal dust explosions [J]. Energy, 2022, 239: 122246. DOI: 10.1016/j.energy.2021.122246.
[24]	JIANG H P, BI M S, HUANG L, et al. Suppression mechanism of ultrafine water mist containing phosphorus compounds in methane/coal dust explosions [J]. Energy, 2022, 239: 121987. DOI: 10.1016/j.energy.2021.121987.
[25]	YAN X Q, YU J L. Dust explosion venting of small vessels at the elevated static activation overpressure [J]. Powder Technology, 2014, 261: 250–256. DOI: 10.1016/j.powtec.2014.04.043.
[26]	Explosive atmospheres: Part 20-2: Material characteristics: Combustible dusts test methods: Technical Corrigendum 1: ISO/IEC 80079-20-2: 2016/Cor 1: 2017 [S]. Geneva: International Electrotechnical Commission, 2017.
[27]	张公妍, 张延松, 陈昆, 等. 模式拟合法和无模式函数法对月桂酸热解行为及机理的研究 [J]. 日用化学工业, 2021, 51(4): 265–271. DOI: 10.3969/j.issn.1001-1803.2021.04.001. ZHANG G Y, ZHANG Y S, CHEN K, et al. Study on the behavior and mechanism of pyrolysis of lauric acid by model-fitting and model-free methods [J]. China Surfactant Detergent & Cosmetics, 2021, 51(4): 265–271. DOI: 10.3969/j.issn.1001-1803.2021.04.001.
[28]	ZHANG G Y, ZHANG Y S, HUANG X W, et al. Effect of pyrolysis and oxidation characteristics on lauric acid and stearic acid dust explosion hazards [J]. Journal of Loss Prevention in the Process Industries, 2020, 63: 104039. DOI: 10.1016/j.jlp.2019.104039.
[29]	曾文茹, 李疏芬, 周允基. 快速升温条件下聚甲基丙烯酸甲酯的燃烧机理 [J]. 高分子材料科学与工程, 2003, 19(6): 183–186. DOI: 10.16865/j.cnki.1000-7555.2003.06.047. ZENG W R, LI S F, ZHOU Y J. Study of the combustion mechanism of poly (methyl methacrylate) [J]. Polymer Materials Science and Engineering, 2003, 19(6): 183–186. DOI: 10.16865/j.cnki.1000-7555.2003.06.047.