Wet lime / limestone flue gas desulphurisation (FGD)

Our experience

• Over 71 GWe global references
• 196 absorbers (110 in China) Customer benefits

Customer benefits

• Almost stoichiometric absorbent consumption
• Spray tower absorber not susceptible to clogging due to patented impulse suspension system
• Individual spray levels can be switched off during low load or low sulphur fuel operation to reduce power consumption
• Variety of corrosion resistant materials available for absorber design
• A high-quality gypsum is created as a by-product which has manifold uses
• Desulphurisation capacity max. 1200MWe per unit

Seawater flue gas desulphurisation (FGD)

Our experience

• Roughly 9GWe global references
• 15 absorbers

Customer benefits

• Cost effective solution for plants in coastal regions
• Up to 99% SO2 capture
• No by-product created – ergo no associated disposal costs
• Low operating cost
• Seawater is typically taken from the power plant cooling circuit
• Desulphurisation capacity max. 1200MWe per unit

Circoclean® flue gas desulphurisation (FGD)

Our experience

• Over 47 million m³/h STP equivalent to 13 GWe global references
• Up to a maximum capacity of 305MWe
• 90 absorbers (18 in China; 26 in the US)

Customer benefits

• Minimum investment cost / water consumption
• High flexibility regarding varying sulphur content
• The process operates at a temperature of approximately 70°C and uses lime for the absorption of SO2, SO3, HF and HCI.
• SO2 reduction efficiencies of up to 99% due to:
  • Very effective mass transfer in Circoclean® absorber
  • Absorbent recirculation
• Small footprint
• Flexibility to meet the requirements of WtE plants

FER-DI® flue gas desulphurisation (FGD)

Customer benefits

• Simple design with low investment cost
• High flexibility regarding varying boiler load and sulphur content
• Reduced equipment resulting in low maintenance costs
• Different sorbent alternatives available (hydrated lime, sodium bicarbonate, customized blends…)
• Flue gas conditioning and sorbent conditioning combined according to process requirements
• Optional sorbent recirculation to reduce operation costs
• Flexibility to simultaneously remove heavy metals, dioxin & furans through injection of activated carbon

SCR DeNOx and Dedusting Systems

Our experience

• More than 300 fabric filters built to date *
• More than 600 electrostatic precipitators built to date *

Customer benefits SCR DeNOx System

• The optimum catalyst composition and geometry and the best position of the process in a “high dust” or “low dust” arrangement
• Nearly stochiometric use of ammonia, very small ammonia slip stream

Customer benefits Dedusting Systems

• Maintains low ash emissions under changing coal and ash quantities
• Specific knowledge about ashes from various sources available
• Highly efficient dust removal with low power consumption