After dedusting, the flue gas produ

After dedusting, the flue gas produced by the boiler is blown into the spray desulfurization tower by positive pressure of induced draft fan. A high-efficiency atomization system is set in the spray tower. In this section, the space is filled with atomized droplets of 100-300 μ m ejected by the atomizer. SO2 in the flue gas reacts with the alkali absorbing liquid again to remove more than 90% sulfur dioxide. The spray system is properly selected and scientifically arranged to form atomized section with uniform distribution of atomized liquid without dead angle and overlapping. The flue gas passes through the atomizing area for a long time. SO2 in the flue gas has sufficient opportunity to contact with the desulfurizing liquid and constantly collide with the droplet. SO2 is absorbed with the absorption liquid, thus being removed and the residual dust is carried with "water droplets". , the mass increases. After desulphurization, the liquid falls into the bottom of the desulfurization tower and is regularly discharged into the collection system after the desulfurization tower is set up. After adding a certain amount of lye properly, the pump is reinjected into the spray system and the liquid distribution system again, and the desulfurizer is always in a recycling state. The desulfurized slurry after multiple cycles is discharged into the post-treatment system. Due to the particularity of the design, when the desulfurized flue gas passes through the tower top demister, the liquid drop in the flue gas is separated to achieve the effect of dedusting and demisting at the same time. Finally, the clean flue gas is discharged up to the standard.