What is Flue gas? Flue gas is the air coming out of a 'channel' after combustion has taken place. This can either be from a fireplace, boiler or power plant chimneys. Flue gas consists of mainly carbon dioxide but also nitrogen oxides, water vapour and sulphur oxides. These gasses are harmful to the environment so scientists have created ways to remove the poison gasses found in flue gas by a process called flue gas desulphurization.

Flue gas desulphurization

Flue gas desulphurization (FGD) involves using state of the art technology to remove sulphur dioxide (SO2) from chimneys emissions.

Current flue gas methods in use
- Dry absorption injection systems
- Spray-dry scrubbing (using sorbet slurries)
- Wet scrubbing

Benefits for the environment



Sulphur dioxide is a colourless gas produced when fossil fuels like coal and oil are burnt. Flue gas desulphurization drastically removes sulphur dioxide from chimney emissions. We know that sulphur dioxide is extremely harmful to the environment and one of the main chemicals that can cause acid rain. Sulphur dioxide is harmful to plants and can damage trees. If we cut down on sulphur dioxide emissions. With the use of technologies such as flue gas desulphurisation we will strive one-step closer to a clean environment.


Another great flue gas treatment involves using sodium bicarbonate; this is proving to be the most effective method of flue gas desulphurization to date.