THERMAL SCIENCE

International Scientific Journal

Tian-Qi Liu

,

Xuan Zhao

,

Wei-Ye Tian

,

Rui-Heng Jia

,

Ning Wang

,

Zhi-Xin Cai

SUPPRESSION EFFECT OF CACO3, NACL, AND NH4H2PO4 ON GAS-FAT COAL DUST EXPLOSION PRESSURE AND FLAME CHARACTERISTICS

ABSTRACT
Coal dust explosion is a major accident affecting the safety of coal mine production. In order to control coal dust explosion, using inert dust to suppress explosion is one of the effective methods. Taking the gas-fat coal as the research object and CaCO3, NaCl, and NH4H2PO4 as the inert dust, the suppression effect of inert dust on gas-fat coal dust explosion pressure and flame is studied. It is found that when the gas-fat coal dust particle size is 48~58 μm, both the maximum pressure and the farthest distance of flame reach the maximum value. Among the three inert dusts, NH4H2PO4 has the best suppression effect, followed by NaCl, and CaCO3 has the worst suppression effect on explosion. The smaller the particle size of
KEYWORDS
gas-fat coal dust explosion, explosion pressure, explosion flame, suppression effect
PAPER SUBMITTED: 2022-07-18
PAPER REVISED: 2022-08-13
PAPER ACCEPTED: 2022-08-16
PUBLISHED ONLINE: 2022-09-10
DOI REFERENCE: https://doi.org/10.2298/TSCI220718141L
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2023, VOLUME 27, ISSUE Issue 2, PAGES [1553 - 1562]
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Suppression effect of CaCo3, NaCl, and NH4H2PO4 on gas-fat coal dust explosion pressure and flame characteristics

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence