Experimental study on the influence of different factors on the explosion risk parameters of pulverized coal cloud
YAN Yueyuan
YAO Gang
MA Li
FAN Jing
SANG Wei
MA Teng
WANG Guangming
Abstract：In order to study the factors affecting the ignition risk parameters of pulverized coal cloud,Godbert-Greenwald constant tem-perature furnace was used to test the minimum ignition temperature of pulverized coal cloud under different particle size,mass concen-tration and powder injection pressure conditions.The results show that the minimum ignition temperature increases with the increase of particle size.In the range of 0.250-0.667 kg/m3,the mass concentration of pulverized coal decreases with the increase of mass fraction,and the minimum value is 545℃.With the increase of dusting pressure,it changes in the shape of"V".The degree of influence of the three factors on the minimum ignition temperature is as follows:mass fraction>powder injection pressure>coal particle size.
Keywords：pulverized coal cloudexplosion hazardminimum ignition energyminimum ignition temperaturespray powder pressure
Publication Date：2024-07-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 78-84 )