Abstract
With the experimental system of thermo-balance, the combustion characteristics of powders of different kinds of coals under various experimental conditions are studied by using the method of thermo-gravimetric analysis and differential scanning calorimetry. Different factors such as heating rate, particle size and additives on the combustion characteristics are investigated. The results show that, with the raise of heating rate , coal combustion TG and DTG curves of different kinds of coal move to higher temperature zone and the combustion rate increases while the characteristics of ignition and burnout is strengthened. With the sample weight increasing, the ignition temperature and coal combustion rate decreases and the burnout temperature increases. With the decrease of particle size of coal powder, combustion characteristics are commonly enhanced firstly and wakened later. Additives such as K2CO3, Ca(OH)2, Fe(NO3)3·9H2O, FeSO4 can promote coal combustion in the low temperature zone(573∼723K).
| Original language | English |
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| State | Published - 2013 |
| Event | International Conference on Power Engineering 2013, ICOPE 2013 - Wuhan, China Duration: 23 Oct 2013 → 27 Oct 2013 |
Conference
| Conference | International Conference on Power Engineering 2013, ICOPE 2013 |
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| Country/Territory | China |
| City | Wuhan |
| Period | 23/10/13 → 27/10/13 |
Keywords
- Coal
- Combustion characteristics
- Factors
- Thermo-balance