ERG designs flue gas desulphurisation (de‑SOx) systems for process and energy applications, using limestone scrubbing to remove high concentrations of sulphur dioxide (SO₂) and produce saleable gypsum (calcium sulphate) as a by‑product. These gas cleaning systems transfer established power‑sector FGD chemistry to smaller flue gas streams in the process industries, providing both emissions control and gypsum manufacture.
Whether from fossil fuel combustion or mineral ore roasting, SO₂ is a well‑known air pollution challenge. Flue gas desulphurisation (de‑SOx) plants in the power sector have successfully used limestone slurry for several decades, and 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 concentrations above 200,000 mg/m³ down to applicable local emissions limits 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.
Industrial gas cleaning/Thermal systems
System Maintenance
Odour control
Plastic-GRP Fabrication