Flue Gas Desulphurization

Desulphurization is a chemical process for the reduction of sulfur dioxides. Sulfur dioxide comes in the industry from the burning of fossil fuels such as coal. Mainly in thermal power plants.

Desulfurization processes

HASLER-Group in wet FGD process :

Doseur à Bande Gravit

Bulk and powdery materials dosing

WEIGH BELT FEEDER GRAVIT

  • Accuracy : ± 0,25%
  • Modular length and belt width
  • Easy maintenance and commissioning
WEIGH BELT FEEDER GRAVIT
GRAVIT

Powdery materials dosing

DOUBLE ROTARY WEIGH FEEDER

  • Accuracy : ± 0,5%
  • Material moisture < 1 %
  • Particle size : < 1 mm
  • Several diameters
  • Easy maintenance and commissioning
  • Complete tightness
  • Material quantity measured over 270°
  • Easily removable wear elements
  • ABS system thanks to drive integrated torque limiter
  • Rotation control
  • High temperature version : up to 130°C continuously
TWIN ROTAWEIGH

Pre and post-absorber Agitators

LUMPP® mixer with LBS Impeller

Suspended limestone

  • Role: suspension
  • Impeller : LBS, 2 – 3 or 4 blades, turbines
  • Sealing : N / A
  • Material: Carbon steel ; inner foam rubber
  • Chemscale: ~ 3,5

Gypsum tank

  • Role : suspension
  • Impeller : LBS, 2 – 3 or 4 blades, turbines Sealing : N/A
  • Material : rubber coating ; carbon steel
  • Chemscale : ~ 3,5
Suspended limestone
Gypsum tank
Suspended limestone
agitation-dans-l-absorbeur

Agitation in the absorber

Limestone + gypsum mixing

  • Role : homogeneization
  • Impeller : LBS 3 blades
  • Sealing : mecanical sealing
  • Material : SS 1,4529
  • Power density : 59,7 W/m3
  • 3 – 5 side-entry mixers
Side entry mixer
SIDE ENTRY MIXERS
MODELIZATION CFD
MODELIZATION CFD
FGD Flue Gas Desulfurization

Filtration

HORIZONTAL VACUUM BELT FILTER

  • Filtration rate: 1,1 t / h / m² ± 0,1
  • Filtration cycle time : 90s
  • Filter cloth: polypropylene, 85 microns, mono –mono double layer
  • Airflow: ~ 300 m3 / h / m2
HORIZONTAL VACUUM BELT FILTER FILTRES PHILIPPE
HORIZONTAL VACUUM BELT FILTER FILTRES PHILIPPE