【摘要】 本文在不同的气相平均温度条件下,研究了气相温度脉动对不同粒径煤粉颗粒挥发分释放的影响。计算结果表明,与不考虑气相温度脉动相比,气相温度脉动加快了煤粉颗粒瞬时质量的下降即挥发分的释放。随着气相温度脉动强度的增加,这种加快颗粒瞬时质量下降即挥发分释放的趋势更为明显。更多还原

【Abstract】 The effects of gas temperature fluctuation on the devolatilization of pulverized coal particles with different diameters are explored under different time-averaged gas temperature. The calculated results show that the gas temperature fluctuation leads to more rapid decrease of the instantaneous mass of pulverized coal particle, comparing to the results without considering the gas temperature fluctuation. The increase in the fluctuation intensity of gas temperature will further enhance the instantaneous particle mass loss during the coal devolatilization processes.更多还原