期刊
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
卷 155, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.psep.2021.09.011
关键词
Flammable dust; Dust explosion; Hexamethylene triperoxide diamine; Lycopodium clavatum spores
资金
- Cultural and Educational Grant Agency of the Ministry of Education, Science, Research and Sport of the Slovak Republic [020STU-4/2021]
- Slovak Research and Development Agency [APVV-16-0223]
This study examined the explosion parameters of dispersed dust ignited by an improvised explosive device, finding that the achieved parameters were slightly lower than when using a commercial igniter. These findings may be relevant for the design of explosion prevention devices.
Dust explosion poses a significant hazard in industry. An explosion of dispersed dust can be ignited by an improvised explosive device. The article deals with the study of explosion parameters of representative samples of dispersed dust ignited by an improvised explosive device. Hexamethylene triperoxide diamine was used as an igniter. Lycopodium clavatum spores were used as a standard sample. Furthermore, dust samples were selected from those types of operations that may be endangered if an improvised explosive device is used as an igniter. Wheat flour and beech wood dust were selected as representative samples. The achieved parameters of explosion pressure and explosion constant Kst were on average by 5-15% lower than the parameters achieved when using a commercial igniter. The Pmax value and the inflection point of the explosion record were reached 7-12 ms earlier than those achieved with a commercially available igniter. The findings may be relevant in the design of explosion prevention devices. New types of explosion prevention devices can be designed to reduce the risk of explosion of dispersed combustible dust caused by improvised explosive devices, e.g. in a case of terrorist attack on the objects with the occurrence of dust clouds. (C) 2021 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
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