Thermal reaction characteristics of low rank coal at low-temperature by in-situ infrared
Abstract：The thermal reaction process of three different low rank coal was tested by in situ Fourier transform infrared emission spectroscopy at low-temperature.Quantitatively analyzed the change of functional groups in coal,and studied the activity variation characteristics of coal,meanwhile,analyzed the microscopic mechanism of effects that the drying temperature of coal had.The results demonstrate that coal itself produces the active chemical reaction in the thermal reaction,methylene group is less after increased,hydroxyl gradually decreases,carboxyl reduces gradually after a period of smooth,carbonyl also reduces after increased,coal＇s own activity also undergoes great changes,the total proportion of active functional groups active functional groups gradually decreases.It is sure that temperature below 40 ℃ is the most suitable temperature for drying.
Keywords：low rank coalin-situFTIRpeak fittingdrying temperature
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)