Desulfurization Systems (DeSOx) – Dry and Semi-Dry Flue Gas Cleaning

AB Clean Air Solutions provides modern desulfurization systems (DeSOx) based on dry or semi-dry processes for the efficient removal of acidic pollutants from industrial flue gas streams.

The systems operate through the controlled injection of suitable sorbents, enabling reliable emission reduction while meeting the most stringent environmental regulations.

These solutions allow the effective removal of HCl, HF, SO₂, SO₃ as well as mercury (Hg), achieving very high removal efficiencies.

Typical application areas for GSA desulfurization systems:

  • Cement Industry
  • Metallurgy & Iron Ore Agglomeration
  • Other Industrial Applications

Achievable Removal Efficiencies:

  • SO₂: > 97% → Outlet emission: < 10 mg/Nm³ (dry)
  • HCl: > 99% → Outlet emission: < 10 mg/Nm³ (dry)
  • Hg: > 80% → Outlet emission: < 4 µg/Nm³ (dry)
  • Hg (extended): > 90% → Outlet emission: < 4 µg/Nm³ (dry)

Advantages of the GSA Systems:

  • Low lime consumption
  • No wastewater generation
  • Compact design
  • Retrofit capability
  • Suitable for integration with ESP or fabric filters
  • Numerous industrial references


  • GSA Flowsheet
  • GSA by night