This video explains the working principle of wet flue-gas desulfurization and the process flow of limestone–gypsum wet desulfurization. Wet desulfurization is a widely used method for purifying sulfur dioxide from flue gases, with desulfurization efficiencies exceeding 95%. The limestone–gypsum process includes grinding limestone, pumping it into the absorption tower in a circulating loop, and allowing it to react chemically with the flue gas in a countercurrent flow. Ultimately, the desulfurized flue gas is discharged into the atmosphere, while the gypsum slurry is dewatered, stored in a holding area, and then loaded onto trucks for transport.
This video outlines the principles of wet desulfurization in three parts, addressing sulfur pollution in coal-fired power plants and the application of wet flue-gas desulfurization:
- An introduction to the working principle of wet desulfurization
- The grinding of limestone slurry and the operation of the absorption tower
- The sulfur dioxide absorption process and gypsum dewatering
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