Midwestern U.S. Utility

The wet flue gas desulfurization (FGD) system from Babcock & Wilcox (B&W) features a combination of design components to provide a high level of reliability and removal efficiencies. These include B&W’s signature tray tower design that provides 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

• 3 x 676 MW
• Boiler type: Pulverized coal fired
• Design fuel: Bituminous
• Additional environmental equipment: Electrostatic precipitator (ESP) and selective catalytic reduction (SCR) system

Project Summary

• Engineering, procurement and construction of a wet flue gas desulfurization system
• System designed to remove 97% of the entering SO₂ without organic acid addition
• Type: Limestone forced oxidation with gypsum byproduct
• Project awarded: April 2004
• Operational dates: December 2006, May 2007, and October 2007
• Two additional B&W absorbers scrubbing a fourth boiler at the plant.

Units 1 & 2

Unit 3