Asheville Station Units 1 and 2
Wet Flue Gas Desulfurization Systems

Progress Energy
Skyland, North Carolina

Babcock & Wilcox (B&W) wet flue gas desulfurization (FGD) systems feature a combination of design components to provide a high 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, forced oxidation system, and advanced mist eliminators.

Boiler/Plant Information

Project Summary

  • Engineering, procurement and commissioning of a wet FGD system
  • System designed to remove 97% of the entering SO2 without organic acid addition
  • Type: Limestone forced oxidation with gypsum byproduct
  • Commercial operation: November 2005 and May 2006

Asheville Station FGD System

Asheville Station Units 1 and 2

B&W Scope

  • Two wet FGD absorbers – functional design, process equipment and tower internals by B&W, tower structure by Stebbins
  • Two limestone milling systems (1 operating, 1 spare)
  • Four gypsum centrifuges (3 operating, 1 spare)


The project met engineering, fabrication and delivery objectives. The commissioned units met or exceeded performance guarantees. The project also earned the Best Coal-Fired Project Honorable Mention award at the 2006 POWERGEN International Conference and Exhibition.

New Build

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We consistently demonstrate the ability to successfully execute innovative solutions for our customers, from new equipment to large, complex full-scope engineering and construction projects.

Upgrades / Retrofits

Upgrades and Retrofits by B&W
Modifying, improving and maintaining existing equipment are vital considerations for the long-term viability and profitability of all operations.

Parts / Services

Babcock & Wilcox Parts and Service Support
An extensive network of worldwide regional service centers, field service engineers and technical support personnel are available to provide the customized service and aftermarket solutions for your requirements.