Power plants use flue gas desulfurization equipment. what is another name for this equipment and what does it do to reduce the impact of coal use

Scrubbers is another name for Flue gas desulfurization equipment. Flue gas desulfurization equipment reduce the impact of coal use by removing sulfur dioxide in flue gas from fossil-fuel power plants and from the emissions of other sulfur oxide emitting processes. Power plants use flue gas desulfurization equipment to remove impurities such as sulfur, nitrogen oxides and other particulates from smoke before it goes away from their smokestacks.