Flue Gas Desulphurization

Flue Gas Desulphurization (FGD) is a pollution control process designed to remove sulphur dioxide (SO₂) from the exhaust gases of boilers, furnaces, and other industrial combustion systems. Widely used in thermal power plants, refineries, cement plants, and chemical industries, FGD systems help meet environmental regulations by significantly reducing SO₂ emissions. The most common type is the wet limestone FGD, though dry and semi-dry (spray dryer) systems are also used based on application needs, space, and water availability.