Results 21 to 30 of about 1,795 (204)

Ignition temperature and explosion pressure of suspended coal dust cloud under different conditions and suppression characteristics

Scientific Reports, 2023
The ignition and explosion processes of suspended coal dust clouds and their suppression characteristics are important aspects of dust prevention and control.
Tianqi Liu, Xiangzhen Mu, Xingchen Wu, Ruiheng Jia, Jining Xie, Zhongyi Gao   +5 more
doaj   +2 more sources

The Dust Explosion Characteristics of Coal Dust in an Oxygen Enriched Atmosphere

Procedia Engineering, 2012
AbstractThe ability to mix pulverised coal with oxygen at concentrations greater than the currently applied 21% may well provide advantages for burner design in oxy/coal fired systems. However the risk of dust explosions increases significantly with increasing oxygen concentration and temperature.
Norman, Frederik, Berghmans, Jan, Verplaetsen, Filip   +2 more
openaire   +2 more sources

Explosion Characteristics and Flame Propagation Behavior of Mixed Dust Cloud of Coal Dust and Oil Shale Dust

Energies, 2019
Coal and oil shale are often mined and utilized together, and mixed dust is easily formed in these processes. In order to ensure safe production in these processes, the explosion characteristics of mixed dust were studied. Using a Godbert-Greenwold (G-G)
Junfeng Wang, Yansong Zhang, Huifeng Su, Jinshe Chen, Bo Liu, Yuyuan Zhang   +5 more
doaj   +2 more sources

Sound identification method of coal mine gas and coal dust explosion based on wavelet scattering transform [PDF]

Meitan kexue jishu
To solve the problems of high false alarm rate and leakage rate of coal mine gas and coal dust explosion disaster alarm methods, and improve the accuracy of coal mine gas and coal dust explosion perception, sound identification method of coal mine gas ...
Xingchen YU, Xiaowei LI
doaj   +2 more sources

Study on the Explosion Mechanism of Low-Concentration Gas and Coal Dust

Fire
In coal mines, the mixture of coal dust and gas is more ignitable than gas alone, posing a high explosion risk to workers. Using the explosion tube, this study examines the explosion propagation characteristics and flame temperature of low-concentration ...
Li Liu, Xinyi Mao, Yongheng Jing, Yao Tang, Le Sun   +4 more
doaj   +2 more sources

Explosion and health hazards caused by dust during coal mining and their prevention strategies

Discover Chemical Engineering
The world’s energy supplies depend on a scale of high significance upon the coal industry. Nevertheless, as with any other case, some safety issues require urgent response, for example, coal dust explosion accidents.
Muhammad Imran Rashid, Muhammad Athar, Muhammad Waqas Iqbal, Hafiz Khurram Shahzad, Ayesha Mobeen, Mahnoor Asif   +5 more
doaj   +2 more sources

Experimental study on the combustion and explosion process induced by the entrainment of deposited coal dust [PDF]

工程科学学报
During the operation of pulverizing systems in power plants, high ambient temperatures create conditions in which coal dust deposited on equipment surfaces is prone to thermal runaway.
Jing FAN, Li MA, Pengyu ZHANG, Qingyong ZHANG, Xinhui SHI   +4 more
doaj   +2 more sources

Experimental study on ignition of methane and coal dust on the surface of high temperature heat source

Gong-kuang zidonghua, 2021
The high temperature area of coal spontaneous combustion in coal mine goaf may cause methane/coal dust explosion. Therefore, it is necessary to carry out research on coal spontaneous combustion induced methane/coal dust explosion. The current research on
WANG Yi, WANG Haiyan, ZHANG Lei, HU Lang
doaj   +1 more source

Research on perception method of coal mine gas and coal dust explosion based on explosion sound recognition

Gong-kuang zidonghua, 2023
The characteristics of coal mine gas and coal dust explosion are analyzed. The gas concentration changes suddenly. The ambient temperature rises rapidly. The air pressure rises suddenly. It produces fireballs and smoke.
SUN Jiping, YU Xingchen, WANG Yunquan, LI Xiaowei   +3 more
doaj   +1 more source

Particle size change of solid residue and flammability analysis of gaseous residue of lignite coal dust explosion

Gong-kuang zidonghua, 2021
The solid and gaseous residues of coal dust explosion are the physical evidence for analyzing the detonation site and propagation path and the basis for deploying rescue work.
ZHU Chao, WANG Hao
doaj   +1 more source