Abstract
The heat transfer mechanism of wet flue gas and its influence on SO2 absorption when condensation occurs were theoretically analyzed with vapor fraction of 8% to 28%. A modified film model and Nusselt theory were used to describe the characteristics of mass, momentum and energy transfer at the phase interface. The effects of the velocities induced by mass transfer (vapor condensation and SO2 absorption) were included in conducting governing equations. Vapor condensation induces the SO2 absorption in the wet flue gas. For high mass fraction of vapor the SO2 absorption will be an important phenomenon in the condensation process. Another important factor influencing the SO2 absorption is the Re number of bulk flow of wet flue gas.
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