首页|TGA/DSC study to characterise and classify coal seams conforming to susceptibility towards spontaneous combustion
TGA/DSC study to characterise and classify coal seams conforming to susceptibility towards spontaneous combustion
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
维普
Thermogravimetric analysis/differential scanning calorimeter (TGA/DSC) technique along with basic coal characteristics study is carried out for eighty coal samples of Indian coalfields,to determine spontaneous combustion propensity behaviour of coal.TGA study of coal samples indicates that there is an increase in the mass of coal samples in the temperature range 150-350 ℃,which may be due to oxygen adsorption and absorption.The correlation and principal component analysis states that the component of proxi-mate analysis (Mad,VMd,FR,and VR) have an acceptable correlation with the TGA experiments results i.e.,Tgsh and Tgign.Multiple fixed nonlinear regression analysis shows that thermogravimetry (TG) exper-iment results Tgign may be the best index to categorise/classify the coal as per their susceptibility towards spontaneous combustion.The authors proposed four groups of classification as per their propensity towards spontaneous combustion depending upon the moisture (Mad),volatile matter (VMd),and TG ignition temperature from differential thermogravimetric (DTG) curve (Tgign) using hierarchal clustering analysis.The coal samples of different seams from Indian coalfield may be classified into four different clusters,viz.very highly/extremely susceptible (Tgign ＜ 260 ℃),highly susceptible (260 ℃ ≤ Tgign ＜ 290℃),moderately susceptible (290 ℃ ≤ Tgign ≤ 320 ℃),and poorly susceptible (Tgign ＞ 320 ℃).The field observations and TGA/DSC experiment results with the following statistical analysis substantiate a sim-ilar assessment.
NETL
NSTL
万方数据
维普
