De-SOx Gypsum Manufacture

Whether from fossil fuel combustion or mineral ore roasting, SO₂ is a well-known pollution challenge.

Flue gas desulphurisation (de-SOx) plants in the power sector have successfully used limestone for several decades. ERG now brings this chemistry to the process industries for treating smaller flue gas flowrates contaminated with high SO₂ concentrations. Using the unique features of the V-tex^® technology, we can scrub SO₂ from >200,000 mg/m³ to applicable local emissions concentrations as low as 50 mg/m³.

Limestone slurry is used as the scrubbing liquor, with air oxidation in the sump tank and dewatering of a side-stream effluent to produce saleable gypsum (calcium sulphate) powder.

Talk to ERG’s sales team about your application.