A theorerical model is established to calculate the charactertics of heat and mass transfer during spray drying FGD process for the slurry droplets of different initial diameters.

• 建立了不同雾化粒度下雾滴传热传质特性的理论计算模型，其计算结果能与实验喷雾干燥脱硫塔上所得数据较好地吻合。