A heterogeneous condensation device of finned tube condenser equipped with vortex generators has been proposed for capturing SO₃ aerosols and moisture from saturated flue gas. An original numerical model for simulating the growth and capture behavior of SO₃ aerosols was proposed and verified. The simulation results show that the mean diameter and capture efficiency all increase gradually along the mainstream direction. The VGs can induce a large number of low-velocity recirculation zones on the fin surface, thereby promoting the agglomeration and deposition of SO₃ aerosols. The experimental results show that the maximum number and mass capture efficiencies reached 81.1% and 40.1% respectively at SO₃ concentration of 30mg/m³. Besides, the rear end of the condenser has the smallest condensate volume and the lowest condensate PH value, which makes this part more susceptible to corrosion. Moreover, the effects of main parameters were also explored to provide references for engineering applications.

提出了一种配备涡流发生器的翅片管冷凝器非均相冷凝装置，用于捕获饱和烟气中的SO _{3气溶胶和水分。}提出并验证了模拟SO ₃气溶胶的生长和捕获行为的原始数值模型。模拟结果表明，平均直径和捕获效率均沿主流方向逐渐增大。VGs可以在翅片表面诱发大量低速再循环区，从而促进SO ₃气溶胶的团聚和沉积。实验结果表明，当SO ₃浓度为30mg/m ³时，最大数量和质量捕获效率分别达到81.1%和40.1% 。另外，冷凝器后端的凝结水量最小，凝结水PH值最低，这使得该部位更容易受到腐蚀。此外，还探讨了主要参数的影响，为工程应用提供参考。