Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/15861
Title: Assessment of auto-oxidation cum self-heating tendency of Indian coals by DRIFT studies
Authors: Khan, Samit
Adak, Ashis K
Sen, Raja
Sarkar, Abhijit
Keywords: Auto-oxidation;Crossing point temperature;Diffuse reflectance infrared fourier transform spectroscopy
Issue Date: Jan-2013
Publisher: NISCAIR-CSIR, India
Abstract: Coal self-heating, due to low temperature oxidation of coal, is generally considered to be the primary cause of spontaneous ignition. With the purpose of having a more definitive quantization of this subtle stage of coal oxidation, study on proneness to coal towards auto-oxidation, vis-à-vis self-heating phenomenon, has been carried out. Various methods like crossing point temperature (CPT), diffuse reflectance infrared fourier transform spectroscopy (DRIFT), differential scanning calorimetry-thermogravimetric analysis (DSC-TGA) and wet oxidation method has been used for comparative study. It is observed that though CPT values alone are adequately indicative and are consistent with actual field experience, the combination of CPT and DRIFT data complements each other very well to provide greater information for better prediction of proneness to auto-oxidation vis-à-vis self-heating phenomenon of coals. Other methods tried are found to be comparatively inadequate.
Page(s): 52-56
URI: http://hdl.handle.net/123456789/15861
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.20(1) [January 2013]

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