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Qin X, Wei X, Shi J, Yan Y, Zhang Y. Research on the Inhibition Effect of NaCl on the Explosion of Mg-Al Alloy Powder. ACS OMEGA 2024; 9:8048-8054. [PMID: 38405477 PMCID: PMC10882612 DOI: 10.1021/acsomega.3c08242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 12/21/2023] [Accepted: 01/25/2024] [Indexed: 02/27/2024]
Abstract
A study was conducted on the explosion overpressure and flame propagation law of magnesium-aluminum (Mg-Al) alloy powder, and the suppression mechanism of sodium chloride (NaCl) on the explosion of magnesium-aluminum alloy powder was explored. Adding NaCl powder can effectively reduce the explosion pressure, flame front position, and flame propagation speed. The higher the amount of NaCl powder added, the lower the explosion pressure of magnesium-aluminum alloy powder, the slower the flame propagation speed, and the lower the flame brightness. NaCl adsorbed on Mg-Al alloy powder isolated heat transfer and played a cooling role. The Cl- produced by NaCl decomposition will react with the free radicals H+ and OH- in the reaction system, which will reduce the concentration of H+ and OH- in the combustion process and hinder the propagation and expansion of the flame. The research results provide theoretical guidance for the explosion prevention of Mg-Al alloy powder and the preparation of a physical-chemical compound explosion suppressor in the later stage.
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Affiliation(s)
- Xinxin Qin
- College of Safety and Environmental
Engineering, Shandong University of Science
and Technology, Qingdao 266590, Shandong, China
| | - Xiangrui Wei
- College of Safety and Environmental
Engineering, Shandong University of Science
and Technology, Qingdao 266590, Shandong, China
| | - Jing Shi
- College of Safety and Environmental
Engineering, Shandong University of Science
and Technology, Qingdao 266590, Shandong, China
| | - Yanling Yan
- College of Safety and Environmental
Engineering, Shandong University of Science
and Technology, Qingdao 266590, Shandong, China
| | - Yansong Zhang
- College of Safety and Environmental
Engineering, Shandong University of Science
and Technology, Qingdao 266590, Shandong, China
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Zhang H, Si F, Dou J, Li M, Wu L, Xie T, Zhao L, Huang C, Chen X. Inerting characteristics of ultrafine Mg(OH)2 on starch dust explosion flame propagation. J Loss Prev Process Ind 2023. [DOI: 10.1016/j.jlp.2023.104991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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3
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Analysis of the effectiveness of Mg(OH)2/NH4H2PO4 composite dry powder in suppressing methane explosion. POWDER TECHNOL 2023. [DOI: 10.1016/j.powtec.2023.118255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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4
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Study on the preparation of green suppressors and their characteristics in coal dust flame propagation inhibition. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2022.103749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Meng X, Yan K, Pan Z, Zhang Y, Liu J, Shi L, Wu Y. Study on mechanism and dynamics of inert powder explosion inhibitor inhibiting aluminum powder explosion. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2022.103773] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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6
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Ji WT, Yang JJ, He J, Wang Y, Wen XP, Wang Y. Preparation and characterization of flower-like Mg-Al hydrotalcite powder for suppressing methane explosion. J Loss Prev Process Ind 2022. [DOI: 10.1016/j.jlp.2022.104858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Wang Z, Meng X, Liu J, Zhang Y, Wang Z, Dai W, Yang P, Liu Y, Li F, Yan K. Flame propagation behaviours and explosion characteristics of Al Mg alloy dust based on thermodynamic analysis. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Zhang T, Jiang H, Zhang K, Zhu C, Xue C, Zhang Z, Xu J, Gao W. Inhibition effect of aluminum dust explosions by one novel zinc borate. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117682] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Izak P, Biel M, Mastalska-Popławska J, Janik P, Mortka P, Lesiak P. The Effect of Magnesium Hydroxide Addition on the Extinguishing Efficiency of Sodium Bicarbonate Powders. MATERIALS 2022; 15:ma15103449. [PMID: 35629478 PMCID: PMC9143470 DOI: 10.3390/ma15103449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/04/2022] [Accepted: 05/09/2022] [Indexed: 02/04/2023]
Abstract
This article analyzes the possibility of the modification of BC powder (a mixture of sodium bicarbonate and calcium carbonate) with magnesium hydroxide (Mg(OH)2). Extinguishing efficiency as well as the influence of this additive on other physicochemical properties were determined by performing a 13B fire test, rheological measurements of the powders, thermal tests (thermogravimetry (TG) and differential scanning calorimetry (DSC) in combination with quadrupole mass spectrometry (QMS)) and microscopic observations of the powders’ surface (scanning electron microscope (SEM) with energy dispersive X-ray analysis (EDS)). It was found that the increase of the Mg(OH)2 content causes deterioration of the rheological properties by increasing the slope angle of the flow curve in relation to the normal stress (the tangent of the flow curve slope varying from 0.258 for 5% of Mg(OH)2 up to 0.330 for 20% of Mg(OH)2). However, at the same time, the increased content of Mg(OH)2 increases the total energy of the chemical decomposition reaction (from −47.27 J/g for 5% of Mg(OH)2 up to −213.6 J/g for 20% of Mg(OH)2) resulting in the desirable higher level of heat removal from the fire. The initial extinguishing effect of the fire becomes more effective as the hydroxide content increases (within the first 2 s), but at a later stage (from t = 63 s), the temperature is no longer sufficient (it is below 350 °C) for thermal decomposition of Mg(OH)2. As such, the optimal content of Mg(OH)2 is 10–15%. The obtained results allowed for the assessment of the impact of individual powder components on its extinguishing effect and will contribute to the development of science in the field of developing new types of extinguishing powders.
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Affiliation(s)
- Piotr Izak
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland; (P.I.); (M.B.)
| | - Mateusz Biel
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland; (P.I.); (M.B.)
- Ogniochron S.A., Przemyslowa 42, 34-120 Andrychow, Poland
| | - Joanna Mastalska-Popławska
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland; (P.I.); (M.B.)
- Correspondence:
| | - Paweł Janik
- Scientific and Research Centre for Fire Protection—National Research Institute, Nadwislanska 213, 05-420 Jozefow, Poland; (P.J.); (P.M.); (P.L.)
| | - Piotr Mortka
- Scientific and Research Centre for Fire Protection—National Research Institute, Nadwislanska 213, 05-420 Jozefow, Poland; (P.J.); (P.M.); (P.L.)
| | - Piotr Lesiak
- Scientific and Research Centre for Fire Protection—National Research Institute, Nadwislanska 213, 05-420 Jozefow, Poland; (P.J.); (P.M.); (P.L.)
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Inhibition of Four Inert Powders on the Minimum Ignition Energy of Sucrose Dust. Processes (Basel) 2022. [DOI: 10.3390/pr10020405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In order to evaluate the effect of inert powder on the ignition sensitivity of sucrose dust, this study investigated the effects of NaHCO3, NaCl, NH4H2PO4 and Al(OH)3 on the minimum ignition energy (MIE) of sucrose dust. The results showed that all four different inert powders inhibited the MIE of sucrose dust, and all of them showed a trend that the smaller the particle size of the inert powders, the better the inhibition effect. The inhibition effect was ranked as NaHCO3 > NH4H2PO4 > NaCl > Al(OH)3. NaHCO3 and NH4H2PO4 had both physical and chemical inhibition effects, which were better compared to NaCl and Al(OH)3, which had only physical inhibition effects. Analysis of the flame images showed that the inert powder slowed down the combustion of the sucrose dust flame and reduced the flame height. No flame appeared in the region of higher inert powder concentration.
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Zhang Y, Pan Z, Yang J, Chen J, Chen K, Yan K, Meng X, Zhang X, He M. Study on the suppression mechanism of (NH4)2CO3 and SiC for polyethylene deflagration based on flame propagation and experimental analysis. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117193] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Study on the effect and mechanism of Ca(H2PO4)2 and CaCO3 powders on inhibiting the explosion of titanium powder. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2021.09.067] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zhang H, Tan Y, Zhang S, Xu Y, Zhao Y, Guo J, Cao W. Effects of Initial Turbulence on the Explosion Limit and Flame Propagation Behaviors of Premixed Syngas-Air Mixtures. ACS OMEGA 2021; 6:30910-30918. [PMID: 34841134 PMCID: PMC8613816 DOI: 10.1021/acsomega.1c02513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 10/27/2021] [Indexed: 06/13/2023]
Abstract
Syngas with important industrial applications has explosive hazards because of its flammability. It is necessary and valuable to study the combustion and explosion characteristics of syngas under actual working conditions. To explore the effects of initial turbulence on the explosion limits and the flame propagation behavior of the syngas-air mixtures, the explosion limits were tested by the explosive limit instrument, and the flame propagation process in the spherical pressure vessel was recorded by a high-speed camera. By adjusting the rotating speed of the stirrer to obtain turbulence of different intensities, the explosion limit and flame propagation behavior of syngas under different turbulent conditions were analyzed. The explosion limit of syngas in the macro-static state was 9.5-76.1%, and its flame front was relatively smooth. However, with the increase in turbulence intensity, both the upper and lower explosion limits of syngas decreased. The disturbance of turbulence made the flame shape change. The flame front was wrinkled, and the flame boundary was blurred, which became more and more obvious with the increase in turbulence intensity. The maximum velocity and duration of flame propagation increased with the increase in turbulence intensity. Under the same turbulence intensity, the flame propagation velocity generally augmented first and then lessened.
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Wang Q, Fang X, Wen H, Shu CM, Luo Z, Xu Q, Wang Q, Sheng Y. Explosion hazards of colored powders and the effects of suppressant powder materials. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.05.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Zheng L, Yu Y, Yang J, Zhang Q, Jiang J. Inhibiting effect of inhibitors on ignition sensitivity of wood dust. J Loss Prev Process Ind 2021. [DOI: 10.1016/j.jlp.2021.104391] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wang Z, Meng X, Yan K, Li Z, Xiao Q, Ma X, Wang J. Study on the inhibition of Al-Mg alloy dust explosion by modified Mg(OH)2. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.02.037] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Jin H, Zhang Y, Chen K, Niu K, Wu G, Wei X, Wang H. Preparation and Characterization of a Composite Dust Suppressant for Coal Mines. Polymers (Basel) 2020; 12:polym12122942. [PMID: 33317125 PMCID: PMC7764308 DOI: 10.3390/polym12122942] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 12/01/2020] [Accepted: 12/05/2020] [Indexed: 12/17/2022] Open
Abstract
In an effort to effectively control coal dust pollution and thereby reduce the harm of coal dust to human health, we prepared a highly efficient composite dust suppressant. First, dynamic contact angle and zeta potential measurements were used to select sodium dodecyl sulfonate (SDS) over sodium carboxymethyl cellulose and trisodium methyl silicon as the complementary additive to soy protein isolate for the dust suppressant. We employed viscosity and wind erosion resistance tests to compare the performance of the composite dust suppressant with three common, commercially available suppressants. As the concentration of the composite dust suppressant was increased, the viscosity increased, reaching a maximum value of 22.7 mPa·s at a concentration of 5 wt%. The 5 wt% concentration of the composite dust suppressant provided the lowest wind erosion rate (20.62%) at a wind speed of 12 m/s. The composite dust suppressant also had good bonding performance and wind erosion resistance. Scanning electron microscopy, X-ray diffraction, and thermogravimetric analysis were used to characterize the properties of the dust suppressants. The dust suppressant, which had a crystal-like structure, could easily capture coal dust and form an effective package. In addition, the density of the dust suppressant film increased as its crystallinity increased. The increased density was beneficial in that it enabled the dust suppressant to form a hard, solidified shell on the surface of coal dust, which improved dust suppression. The composite dust suppressant also had good thermal stability.
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Affiliation(s)
- Hu Jin
- College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, China;
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (K.C.); (K.N.); (G.W.); (X.W.); (H.W.)
- Qingdao Intelligent Control Engineering Center for Production Safety Fire Accident, Qingdao 266590, China
| | - Yansong Zhang
- College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, China;
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (K.C.); (K.N.); (G.W.); (X.W.); (H.W.)
- Qingdao Intelligent Control Engineering Center for Production Safety Fire Accident, Qingdao 266590, China
- Correspondence:
| | - Kun Chen
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (K.C.); (K.N.); (G.W.); (X.W.); (H.W.)
| | - Kuo Niu
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (K.C.); (K.N.); (G.W.); (X.W.); (H.W.)
| | - Guangan Wu
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (K.C.); (K.N.); (G.W.); (X.W.); (H.W.)
| | - Xiangrui Wei
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (K.C.); (K.N.); (G.W.); (X.W.); (H.W.)
| | - Houwang Wang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (K.C.); (K.N.); (G.W.); (X.W.); (H.W.)
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