Flue-gas desulfurization (FGD) is a set of technologies used to remove sulfur dioxide (SO2) from exhaust flue gases of fossil-fuel power plants, steel company etc, and from the emissions of other sulfur oxide emitting processes. Limestone-gypsum desulfurization process is one of the most widely used desulfurization technologies in the world. About 90% thermal power plants in Japan, Germany, and the United States adopted this technology for the flue gas desulfurization.
1. Desulfurization efficiency which is up to 95%
2. Limestone is cheap and easy to get.
3. The system runs reliably with excellent operation characteristics.
4. By-products can be fully utilized.Gypsum is good building materials.