The emission of SO 2 leads to serious environmental problems, which has attracted increasing attention. In this work, a cocurrent rotating packed bed (CO-RPB) with a novel SiC structured packing was employed as a process intensification candidate to upgrade existing desulfurization systems. The effects of rotating speed, gas flow rate, liquid flow rate, SO 2 inlet concentration, total salt concentration, and alkalinity on the SO 2 removal efficiency were investigated by adopting the ammoniabased solution as the absorbent. The experimental results showed that the SO 2 concentration at the RPB outlet can meet the new Chinese emission standard very well. In addition, the gas-side volumetric overall mass transfer coefficient (K y a) was deduced based on the mass balance equation, and its correlation was also proposed. The predicted K y a calculated by the correlation was in good agreement with the experimental data, and the deviation was within the range of ±8%.