| |
[摘要]：Volatile combustion greatly influences the combustion of solid particles, especially those with a high proportion of volatile content. The processes of volatile releasing and combustion and its effect on particle combustion should be carefully considered to develop an accurate combustion model. A new single particle combustion model considering the volatile effects was established based on the developed "one-film" and "two-film" model, and both radiation and convection effects were considered. Along with the coal combustion, the flame will stay above the particle surface and then move back to the surface; therefore, according to the location of the flame sheet, the gas-phase reaction and surface reaction in the model will change and give the correct calculation. The model focused on the effect of volatiles, and a simulation and comparison have been performed for validation. Additionally, the influence of volatiles, ambient temperature, and particle diameter on the particle combustion has been investigated in this paper. The results show that the new model has sufficient accuracy and a shorter calculation time than other previously reported models and can be used for other complex combustion problems. |
|
