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Success Stories

From The Leader in Clean Power Production Technologies

Wet Flue Gas Desulfurization System Midwestern Case Study 2

Wet FGD 3d Left 2 x 550 MW Babcock Wilcox

Wet Flue Gas Desulfurization System 2 x 550 MW

Midwestern U.S. Utility

Babcock & Wilcox (B&W) wet flue gas desulfurization (FGD) systems feature a combination of design components to provide the industry’s highest level of reliability and removal efficiencies. These include B&W's signature tray tower design to provide excellent gas to liquid contact and uniform flow distribution through the absorber spray zones; its patented inlet awning, interspatial headers to reduce absorber height, pump power requirements, and internal support costs; forced oxidation system; and advanced mist eliminators.

Boiler/Plant Information

Project Summary

  • Engineering, procurement and construction of a wet flue gas desulfurization system with two absorbers.
  • System designed to remove 97% of the entering SO2 without organic acid addition
  • Type: Limestone forced oxidation with gypsum byproduct
  • Project awarded: April 2004
  • Operation dates: April 2007 and November 2007

B&W Scope

  • Two (2) wet FGD absorbers (1 per boiler)
  • Two (2) limestone milling systems (1 system per boiler)
  • Gypsum dewatering systems that include (3) horizontal table filters (2 operating, 1 spare)
  • Structural steel for process area
  • Construction of all B&W supplied equipment, steel and balance of plant equipment (piping and architectural) through Babcock & Wilcox Construction Co., Inc. (BWCC), a B&W subsidiary


Both commissioned units are currently meeting emissions guarantees.

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Wet FGD 3D Right