Flue gas treatment

Burning fossil fuels not only releases energy, but also sulphurous gases that are harmful to the environment. Flue gas desulphurisation systems extract sulphur from the flue gases. An efficient way to do this is by using magnesium hydroxide.

Sulphur extraction is a process in which flue gases are conducted through water. Magnesium hydroxide is then added to absorb the sulphur oxides. The result of this reaction is the formation of magnesium sulphate, a solution which is easy to process or remove. Sulphur extraction reduces environmental impact.

Benefits

• Magnesium hydroxide efficiently desulphurises flue gases.
• It helps in reduction of acid rain.
• Magnesium hydroxide is safe to use, unlike other alkali products.

Flue gas cleaning for vessels

International regulations impose strict limits on sulphur oxide (SOx) emissions from the maritime industry. To comply with these emission requirements, many ship owners use exhaust gas cleaning systems (scrubbers), which remove sulphur oxides from the exhaust gases before they are released into the atmosphere.

Closed loop and hybrid scrubbers require an alkaline reagent to neutralise the acidic exhaust gases. While caustic soda is commonly used for this purpose, magnesium hydroxide offers a safe and effective alternative thanks to its non corrosive properties, natural buffering capacity and ease of handling.

By using magnesium hydroxide, sulphur oxides are effectively neutralised while the scrubber wash water is treated and recirculated within the system. This enables MH53S Mare to provide safe, reliable and efficient exhaust gas cleaning in compliance with current international emission standards.