Environmental Equipment: Wet Flue Gas Desulfurization (FGD) Systems

 

The spray tower scrubber design of B&W's wet flue gas desulfurization (FGD) system is used for SO2 control, with patented tray design for more uniform flue gas distribution and improved absorption.

Reagents include limestone, lime, magnesium-enhanced lime, sodium carbonate and ammonia.

Capabilities

B&W is a full-scope wet FGD system supplier. Our capabilities include:

  • Flue gas absorbers
  • Reagent preparation systems
  • Dewatering systems
  • Multi-pollutant control technologies
  • Construction services
  • Conceptual design
  • Detail engineering
  • Equipment supply
  • Start-up, commissioning and support services
  • Variety of contracting arrangements
  • Project management
  • Aftermarket parts, services and upgrades

Experience

  • Original equipment supply: B&W has provided wet FGD systems for a total scrubbed capacity of more than 44,000 MW
  • Upgrades: B&W has improved performance of more than 8,000 MW of non-B&W wet FGD systems
  • Fuel experience: Our fuel experience encompasses a complete range of fuels
  • Large, single absorbers: Absorber modules available up to 1,300 MW
  • Full-scope integration: Modularization; project management; total-scope services

Design features

B&W's absorber design features provide the highest levels of SO2 removal, reduced operating costs and significant reductions in maintenance costs compared to other technologies.

  • Applicable boiler sizes: 50 MW to 1300 MW
  • Removal efficiencies: To 99%+
  • Reagents: Primarily limestone; also lime, magnesium-enhanced lime, sodium carbonate and ammonia
  • Fuels: All solid fuels - primarily coal

Aftermarket services

B&W provides a variety of aftermarket services. From the retrofit of absorber trays into open spray towers to improve gas-liquid contact for increased SO2 removal efficiency, to the installation of hydroclones for primary dewatering, providing reliable replacement for existing thickeners and offering a much smaller footprint than thickener systems, B&W has services to meet the customer's needs.

Our aftermarket service capabilities include:

For more information, please contact us.

Wet Flue Gas Desulfurization Unit
Since 1971, B&W 's wet FGD systems have operated efficiently, economically and reliably. Current designs can achieve more than 99% removal of SO2. Improvements in B&W's wet FGD design and auxiliary equipment have resulted in system availability greater than 99.5%.
B&W Wet FGD System
Click image to enlarge.

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