What is the main function of compressed air in wet desulfurization system?

Wet desulfurization technology. Technical Principle Flue gas enters the wet absorption tower of desulfurization device and contacts with the droplets of alkaline limestone slurry injected from top to bottom, so that acid oxide SO2, HCL, HF and other pollutants are absorbed and the flue gas is fully purified. CaSO _ 3 is generated by the reaction of the slurry after absorbing SO2, and CaSO _ 4 is generated by in-situ forced oxidation crystallization. 2H2O, and after dehydration, gypsum, a by-product of commercial desulfurization, was obtained, and finally the comprehensive treatment of sulfur-containing flue gas was realized. Second, the reaction process 1, SO2+H2O absorption