FGD Systems for Fossil-fuel Fired Boilers

In the early 1980’s, strict guidelines were passed for the emission of sulfur dioxide (SO2) in coal-fired power stations in Germany and other European countries.  Subsequently, these power plants were retrofitted with flue gas desulphurization (FGD) systems. The most widely used process was wet flue gas scrubbing using lime/limestone with gypsum as a byproduct. However, other processes (dry adsorption, activated carbon, and Walther-Process) were also utilized.

Overview of FGD Processes
Since 1968 when our first FGD pilot plant started operation, Evonik Steag has gained experience with installed FGDs of various designs and configurations using diverse fuels such as hard coal, lignite coal, and oil.  Evonik Steag has operate more than 10,000 MW of FGDs for over 4 million hours with an SO2 removal rate over 95%.

In addition, Evonik Steag has provided engineering and consulting services to third parties with more than 27,000 MW of FGD capacity, more than 25,0000 MW of which were FGD retrofits. Evonik Steag, as your operating engineer partner, will see you through all phases of the operation.
 

Our FGD system design, engineering and consulting services cover:

• Engineering Phase
   
  • Concept development and process selection
  • Process and equipment design review
  • Bid evaluation, tender negotiation, contract award
  • Project management

 

• Site Implementation Phase
   
  • On-site construction supervision, site management
  • Coordination and supervision of suppliers
  • Quality assurance, quality control
  • Commissioning, trial operation performance testing
  • Operator training
  • Spare parts purchase
  • Maintenance plans and budgets