Flue Gas Desulfurization

Flue-gas desulfurization (FGD) is a collection of technologies used to remove sulphur dioxide (SO2) from the flue gases of fossil-fuel power plants' exhaust as well as from the emissions of other processes that release sulphur oxide, like waste incineration.

What is the Process Of Flue Gas Desulfurization ?

Flue gas desulfurization is the procedure used to remove sulphur compounds from the exhaust emissions of fossil-fueled power plants. This is accomplished by adding absorbents, which can remove up to 95% of the sulphur dioxide from the flue gas.

Flue gas is the expelled substance created when fossil fuels like coal, oil, natural gas, or wood are burned for heat or electricity.

How to Treat Flue Gas Desulfurization

Flue gas desulfurization is frequently processed in a dedicated wastewater facility as opposed to a plant's current wastewater treatment system, enabling facilities to adhere to rigorous FGD wastewater discharge limitations. The choice of coal, scrubber chloride concentrations, the kind of gypsum dewatering system, the type of FGD process employed, and other elements might affect the wastewater composition differently at different plants.

How does Flue Gas Desulfurization Works ?

The chemical reaction that takes place when limestone and warm exhaust gases from a coal-fired boiler come into contact is the foundation of the FGD technology. This response eliminates

It transforms the limestone into calcium sulphite and removes 92% of the sulphur dioxide from the flue gas. In actuality, a booster fan draws flue gas from the boiler into the FGD ductwork before forcing it into the absorber tower.

Due to our strong environmental rules, E.ON does not use limestone from national parks. The gas then comes into contact with a mixture of limestone slurry inside the absorber tower. From banks of nozzles positioned at the tower's top, the slurry is sprayed.

A chemical reaction takes place between the sulphur dioxide (SO2) in the heated gas and the limestone slurry when it comes into touch with each other.

The limestone is transformed into calcium sulphite during this reaction, which also eliminates SO2 from the flue gases. This slurry of calcium sulphite and limestone then sinks to the absorber's base, when compressed air is added. Calcium sulphite is transformed into calcium sulphate, often known as gypsum, by the oxidation of compressed air.


Captive power plants

Utility Power Plant

Thermal power plants

Utility Boilers and Heaters

High sulfur containing Iron Ore smelting

Zinc smelting

Lead smelting

Copper smelting

Furnace oil / heavy oil fired boiler & Heaters.

Carbon black manufacturing.

Coke ovens.

Cupola Furnace.


We have provided numerous FGD plants across the globe and have increased our market share by providing the following features :

satisfying specified emission requirements for various types of fossil fuels with high SO2 removal efficiency

device for multiple pollutant management and related environmental control

High dependability

savings on utilities and energy