Ghosh, Ashish Kumar and Choudhury, Debapriya (2020) Spontaneous Combustion in Relation to Drying ofLow Rank Coal. International journal of coal preparation and Utilization.

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Abstract

The water molecules associated with coal play a significant role in spontaneous ignition and combustion of coal. This paper deals with studies to evaluate the impact of moisture content on crossing point temperature (CPT) and ignition point temperature (IPT) of some low-rank coal and lignite after various stages of drying. Experimental data suggest (i) existence of critical moisture content value determining the propensity of a particular coal toward self-heating and (ii) content of moisture and nature of oxygen-bearing functional groups to be the most influencing factors in self-heating. The auto-oxidation cum self-heating characteristics of coal become more conducive with increase in the ratio of quantity of hydroxyl to carboxyl functional groups. The FTIR studies further corroborate that the initial stages of auto-oxidation cum self-heating occur presumably at the surface of the coal.

Item Type:	Article
Uncontrolled Keywords:	Moisture, spontaneous combustion, coal, CPT, drying
Subjects:	Coal Preparation
Divisions:	UNSPECIFIED
Depositing User:	Mr. B. R. Panduranga
Date Deposited:	24 Feb 2020 11:29
Last Modified:	16 Dec 2020 06:46
URI:	http://cimfr.csircentral.net/id/eprint/2152

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