Effect of coal dust on the air-methane mixture combustion in the Swiss-roll burner
| Autor: | L. L. Min’kov, K. M. Moiseeva |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Waste management
Renewable Energy Sustainability and the Environment lcsh:Mechanical engineering and machinery Swiss roll Coal dust Combustion food.food Methane lean methane-air mixture chemistry.chemical_compound воздушно-метановые смеси food chemistry swiss-roll burner Combustor Environmental science угольная пыль горение feed rate lcsh:TJ1-1570 coal particles combustion |
| Zdroj: | Thermal science. 2019. Vol. 23, Suppl. 2. P. S537-S544 Thermal Science, Vol 23, Iss Suppl. 2, Pp 537-544 (2019) |
| Popis: | The 2-D numerical model has been developed to simulate the combustion of lean coal-methane-air mixture in ?Swiss-roll? burner and investigate the effect of coal particles content and mixture feed rate on the stable burner operation. Five homogeneous and three heterogeneous chemical reactions are considered. The Eulerian model for gas phase and the discrete particle model (Lagrangian) for particle phase taking into account the radiation are used in this study. Simulations are performed for the two turns ?Swiss roll? burner with heat insulated outer wall, channel width of 6 mm and inner wall thickness of 2 mm. It is shown that the presence of coal particles in a lean methane-air mixture expands the range of stable operation of the "Swiss-roll" burner. It is found that an increase in the content of coal particles reduces the combustion time of the particles by in-creasing the combustion temperature, changes the shape of the reaction zone, and shifts it to the burner inlet. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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