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Combustion Kinetics of No. A3 Coal in the Paner Coal Mine of the Huainan Coalfield, Anhui, China.
- Source :
- Procedia Engineering; 2018, Vol. 211, p149-159, 11p
- Publication Year :
- 2018
-
Abstract
- Due to the huge reserves and great commercial potential of No. A group coal seam, the study on its thermal properties and combustion kinetics have attracted much attention. Via thermogravimetric (TG) analysis, the combustion characteristics and kinetics of No. A 3 coal were studied with three types of coal samples, with the grain diameter less than 200 meshes, 200~100 meshes, 100~60meshes, seperately. Under three characteristic temperatures such as T t , T p and T b , the whole combustion process could be roughly divided into 4 stages. Combined with the T max and T i , these five characteristic temperatures increase with elevating heating rates. The Kissinger-Akahira-Sunose (KAS) method and Flynn-Wall-Ozawa (FWO) method as reliable methods were used to verify the results of activation energy ( E a ) determined by of model-fitting methods. As complementary, the Coats-Redfern method was used to calculate the pre-exponential factor ( A ) and the correlation coefficient ( R 2 ). According to the evaluation criteria of E a and R 2 , D1 mechanism was the most probable model to depict the combustion kinetics. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 18777058
- Volume :
- 211
- Database :
- Supplemental Index
- Journal :
- Procedia Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 127983103
- Full Text :
- https://doi.org/10.1016/j.proeng.2017.12.125