Flue gas desulfurization
Overview
Sulfur dioxide is one of the elements forming acid rain
. Tall flue-gas stacks disperse emissions by diluting the pollutants in ambient air and transporting them to other regions.
Flue-gas desulfurization (FGD) is a technology used to remove sulfur dioxide
from the exhaust flue gases of fossil-fuel power plants, and chemical producers of sulphur oxides. Fossil-fuel power plants burn coal or oil to produce steam for steam turbines, which in turn drive electrical generators.
As stringent environmental regulations regarding SO2 emissions have been enacted in many countries, is now being removed from flue gases by a variety of methods.
Acid rain
Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it possesses elevated levels of hydrogen ions . It can have harmful effects on plants, aquatic animals, and infrastructure. Acid rain is caused by emissions of carbon dioxide, sulfur dioxide and nitrogen...
. Tall flue-gas stacks disperse emissions by diluting the pollutants in ambient air and transporting them to other regions.
Flue-gas desulfurization (FGD) is a technology used to remove sulfur dioxide
Sulfur dioxide
Sulfur dioxide is the chemical compound with the formula . It is released by volcanoes and in various industrial processes. Since coal and petroleum often contain sulfur compounds, their combustion generates sulfur dioxide unless the sulfur compounds are removed before burning the fuel...
from the exhaust flue gases of fossil-fuel power plants, and chemical producers of sulphur oxides. Fossil-fuel power plants burn coal or oil to produce steam for steam turbines, which in turn drive electrical generators.
As stringent environmental regulations regarding SO2 emissions have been enacted in many countries, is now being removed from flue gases by a variety of methods.
