Flow gas desulfurization is a technique for removing sulfur compounds such as sulfur dioxide from gas streams. The central feature of this operation is its ability to mitigate air pollution, to protect equipment against corrosion, and to prepare gas for further treatment or end use. The technical characteristics of flow gas desulfurization are mainly based on the use of certain sorbents, for example, limestone or lime. They react with sulfur dioxide to form a stable solid by-product. The gas is typically introduced into the area with the slurry containing absorbent. And that entire process is called absorption Applications of flow gas desulfurization are extensive. They include use in power plants, refineries and other industrial facilities where fossil fuels are burned. So it is an important component in environmental conservation by reducing the impact of emissions on our world and complying with regulations governing those effects.