The effects of main components of coal-fired flue gas after desulfurization on the supersaturated environment achievement and condensational growth for SiO₂ particles by water vapor were analyzed. The predicted results demonstrate that the variation of CO₂ content has the greatest impact on the heat and mass transfer in the flue gas. Moreover, it is unfavorable for heat and mass transfer when the CO₂ content increased. Thus, the improvement of CO₂ content has great advantage of achieving supersaturated environment by the method of heating the gas flow. Similarly, the component of SO₂ also has the negative influence on the heat and mass transfer when its content increased. For the improvement of O₂ content, it is slightly beneficial for the thermal and mass diffusion coefficient of water vapor. Additionally, the process of thermal diffusion will be weakened while the mass diffusion will be facilitated when the amount of water vapor enhanced. Meanwhile, the experimental results indicate that particle growth is significantly improved with the increase of CO₂ content by the supersaturation achieving method of heating gas flow. Nevertheless, it has slightly negative effect on the particle enlargement by cooling the gas flow when the CO₂ content promoted. It can be seen that the influence of coal-fired flue gas composition on the condensational growth by water vapor is different by different supersaturation achieving methods.

分析了脱硫后燃煤烟气主要成分对过饱和环境成就和SiO ₂颗粒被水蒸气凝结生长的影响。预测结果表明，CO ₂含量的变化对烟气中的传热传质影响最大。而且，当CO ₂含量增加时，不利于传热和传质。因此，CO ₂含量的提高对于通过加热气流的方法实现过饱和环境具有很大的优势。同样，SO ₂成分在其含量增加时也对传热传质产生负面影响。为了改善O₂含量，对水蒸气的热扩散系数和质量扩散系数略有好处。此外，当水蒸气量增加时，热扩散过程将减弱，而质量扩散将得到促进。同时，实验结果表明，通过加热气流的过饱和实现方法，随着CO ₂含量的增加，颗粒生长得到显着改善。然而，当 CO ₂含量增加时，通过冷却气流对颗粒增大有轻微的负面影响。可见，不同的过饱和实现方法对燃煤烟气成分对水汽凝结生长的影响是不同的。