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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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Lv C, Wang X, Xue S, Xia X, Wang S. Inhibition characteristics research of aluminum alloy polishing dust explosion through addition of ultrafine Al(OH) 3 inerting agent. Heliyon 2023; 9:e19747. [PMID: 37809580 PMCID: PMC10559055 DOI: 10.1016/j.heliyon.2023.e19747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/05/2023] [Accepted: 08/31/2023] [Indexed: 10/10/2023] Open
Abstract
Investigations into the deactivation of explosion sensitivity and reduction of flame propagation for aluminium alloy polishing wastes were carried out by the addition of ultrafine Al(OH)3 inerting agent. Meanwhile, high-purity aluminium powders with similar mean diameters were also used as a comparative study. The explosion propagation characteristics of high-purity aluminium dust and aluminium alloy polishing waste dust under different inerting ratios (ε ) were tested and investigated using a standardised Hartmann tester and a developed experimental platform. The results show that the minimum ignition energy of high-purity aluminium powder is between 40 and 45 mJ, and the minimum ignition energy of aluminium alloy polishing waste is between 500 and 550 mJ, which is one order of magnitude higher than that of high-purity aluminium powder. The lower explosion limit concentration of aluminium alloy polishing waste dust is 150 g/m3, which is 53.33% of that of high-purity aluminium powder. According to the analysis of the SEM image, the main reason is that the spherical particles of high-purity aluminium dust have a folded surface and good dispersion. Compared with the smooth fibre surface of aluminium alloy polishing waste dust, the former is easier to contact with air and the contact area is larger. Therefore, in engineering practice, it is not appropriate to use high-purity aluminium dust-related explosion parameters as the basis for the risk assessment of combustion and explosion at aluminium alloy polishing work sites. In addition, as the dust concentration decreases, the combustion intensity of high-purity aluminium dust and aluminium alloy polishing waste dust also decreases, and the flame propagation appears to be a discontinuous phenomenon. The peak flame propagation velocity of aluminium alloy polishing waste is 7.368 m/s at a concentration of 300 g/m3, which is 56.85% of that of high-purity aluminium powder. As the inerting ratio increases, the propagation velocity of the explosion flame slows down. When the inerting ratio reaches 30%, the minimum ignition energy of aluminium alloy polishing waste is inerted to 1 J, and self-sustained flame propagation cannot be formed. The results show that the ultra-fine Al(OH)3 powder has a significant inerting effect and is a realistic possibility in the production of aluminium alloy polishing.
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Affiliation(s)
- Chen Lv
- College of Quality and Safety Engineering, China Jiliang University, Hangzhou, 310018, China
- Key Laboratory of Safety and High-efficiency Coal Mining, the Ministry of Education(Anhui University of Science and Technology), Huainan, 232001, China
| | - Xinqun Wang
- College of Quality and Safety Engineering, China Jiliang University, Hangzhou, 310018, China
| | - Sheng Xue
- Key Laboratory of Safety and High-efficiency Coal Mining, the Ministry of Education(Anhui University of Science and Technology), Huainan, 232001, China
| | - Xinxing Xia
- College of Quality and Safety Engineering, China Jiliang University, Hangzhou, 310018, China
| | - Shuang Wang
- College of Quality and Safety Engineering, China Jiliang University, Hangzhou, 310018, China
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Xue C, Jiang H, Zhu C, Gao W. A novel dry water with perfluorohexanone for explosion suppression of AlH3. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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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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Zhu Y, Shang S, Jiang H, Zhang T, Gao W. Synthesis of a Novel Inhibitor and Its Inhibition Mechanism on Aluminum Dust Explosions. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01185] [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]
Affiliation(s)
- Yao Zhu
- State Key Laboratory of Fine Chemicals, Department of Chemical Machinery and Safety Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Sheng Shang
- State Key Laboratory of Fine Chemicals, Department of Chemical Machinery and Safety Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Haipeng Jiang
- State Key Laboratory of Fine Chemicals, Department of Chemical Machinery and Safety Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Tianjiao Zhang
- State Key Laboratory of Fine Chemicals, Department of Chemical Machinery and Safety Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Wei Gao
- State Key Laboratory of Fine Chemicals, Department of Chemical Machinery and Safety Engineering, Dalian University of Technology, Dalian 116024, P. R. China
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Inerting mechanism of magnesium carbonate hydroxide pentahydrate for coal dust deflagration under coal gasification. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117274] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Zhang T, Jiang H, Shang S, Zhang K, Gao W. Synthesis of aluminum hydroxide/Zinc borate composite inhibitor and its inhibition effect on aluminum dust explosion. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2021.117204] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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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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Xu X, Wang B, Xu K, Wang Y. Prevention of a hydrogen explosion accident in the wet aluminum waste dust collection process based on L-malic acid. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2020.12.049] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bu Y, Amyotte P, Li C, Yuan W, Yuan C, Li G. Effects of dust dispersibility on the suppressant enhanced explosion parameter (SEEP) in flame propagation of Al dust clouds. JOURNAL OF HAZARDOUS MATERIALS 2021; 404:124119. [PMID: 33075625 DOI: 10.1016/j.jhazmat.2020.124119] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 08/31/2020] [Accepted: 09/18/2020] [Indexed: 06/11/2023]
Abstract
This work presents an overview about the suppressant enhanced explosion parameter (SEEP) phenomenon in aluminum dust explosion moderation. The SEEP phenomenon can be attributed to either the flammable gas produced by decomposition of insufficient chemical suppressant so as to form an explosible hybrid mixture, or to the improvement in dust dispersibility caused by small amounts of thermal inhibitor so as to form better dispersed dust clouds. Aluminum (Al) and four particle sizes of alumina (Al2O3) were used to confirm a physically caused SEEP phenomenon by performing flame propagation experiments. Higher flame spread velocities (FSVs) in Al dust clouds were found in the presence of 5 or 10% <150 and <45-µm Al2O3 powder. Adding micro-sized Al2O3 disrupted inter-particle contact in combustible dusts, decreased inter-particle forces, and formed dust clouds with better dispersibility, thereby decreasing the effective particle size distribution (PSD) of Al dust. A strong thermal effect brought about by 2.5 µm Al2O3 overcame the negative effect of improved dispersion, preventing SEEP from occurring. The addition of 50 nm Al2O3 increased cohesion of powder mixtures, and decreased dust dispersibility. With benefits from both dispersion suppression and the thermal effect, Al flame propagation was well quenched.
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Affiliation(s)
- Yajie Bu
- Fire & Explosion Protection Laboratory, Northeastern University, Shenyang 110819, China; Department of Process Engineering & Applied Science, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Paul Amyotte
- Department of Process Engineering & Applied Science, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Chang Li
- Department of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China
| | - Wenbo Yuan
- Fire & Explosion Protection Laboratory, Northeastern University, Shenyang 110819, China
| | - Chunmiao Yuan
- Fire & Explosion Protection Laboratory, Northeastern University, Shenyang 110819, China; State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China; State Key Laboratory of Coal Mine Safety Technology, China Coal Technology & Engineering Group Shenyang Research Institute, Fushun 113122, China.
| | - Gang Li
- Fire & Explosion Protection Laboratory, Northeastern University, Shenyang 110819, China
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Wang Z, Meng X, Yan K, Ma X, Xiao Q, Wang J, Bai J. Inhibition effects of Al(OH)3 and Mg(OH)2 on Al-Mg alloy dust explosion. J Loss Prev Process Ind 2020. [DOI: 10.1016/j.jlp.2020.104206] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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