A Flue gas desulphurisation system at SNC Lavalin, Saudi Arabia has been successfully commissioned by our Air Pollution Control (Enviro) division. Congratulations all around to the Ma’aden, Fluor, SNC-Lavalin, SEG and Thermax teams for their contribution from the get go.

In 2014 Thermax’s Boiler and Heater division bagged an order to supply three boilers for the world’s biggest sulphuric acid plant coming up in Saudi Arabia. In a contract secured from the same Canada based engineering and construction company, the Air Pollution Control (Enviro) division will supply a Flue gas Desulphurisation (FGD) system to treat the acid gases from the auxiliary boiler. The system will remove sulphur dioxide (SO2 ) from exhaust flue gases and keep emissions under desired limit.

As stringent environmental regulations regarding emissions have been enacted in many countries, SO2 has to be removed from flue gases as a pre-condition to get the consent to operate the plant.

The FGD system will clean up the boiler off gases by injecting dry sorbent in the gas path, and a bag filter helps collect disposable sulphate dust. The optimal and trouble-free performance of the system has to be guaranteed when the boiler operates at different conditions.

The customer is a diversified mining company, active in gold base metals mining and infrastructure. Enviro won the contract against stiff competition from established global players in the field. The commissioning marks Enviro’s first overseas FGD project.