Química Nova | |
A thermogravimetric analysis of the combustion of a Brazilian mineral coal | |
Claudionor Gomes Da Silva Filho2  Fernando Eduardo Milioli1  | |
[1] ,Universidade de São Paulo Instituto de Ciências Biomédicas Interunidade em BiotecnologiaSão Paulo SP ,Brasil | |
关键词: coal; combustion; kinetics; | |
DOI : 10.1590/S0100-40422008000100021 | |
来源: SciELO | |
【 摘 要 】
Knowledge of coal combustion kinetics is crucial for burner design. This work aims to contribute on this issue by determining the kinetics of a particular Brazilian bituminous coal. Non-isothermal thermogravimetry was applied for determining both the pre-exponential factor and the activation energy. Coal samples of 10 mg and 775 mm mean size were used in synthetic air atmospheres (21 % O2). Heating rates from 10 to 50 ºC/min were applied until the temperature reached 850 ºC, which was kept constant until burnout. The activation energy for the primary and the secondary combustion resulted, respectively, in 135.1 kJ/mol and 85.1 kJ/mol.
【 授权许可】
CC BY-NC
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
【 预 览 】
Files | Size | Format | View |
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RO202005130062312ZK.pdf | 266KB | download |