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Success Stories

From The Leader in Clean Power Production Technologies

Chalk Point, Dickerson and Morgantown Case Study

Chalk Point Image Babcock Wilcox

Chalk Point, Dickerson and Morgantown Wet Flue Gas Desulfurization Systems

GenOn Energy, Inc.

Houston, Texas


Babcock & Wilcox (B&W) supplied wet flue gas desulfurization (FGD) equipment to provide sulfur dioxide (SO2) removal efficiency of 98% of total gas flow. This design features a combination of components to provide a high level of reliability and removal efficiencies. These include a milling system, absorber towers, trays, spray headers, nozzles, mist eliminators, wash headers and forced oxidation.

Boiler/Plant Information

  • Chalk Point Units 1 & 2: 650 MW total
  • Dickerson Units 1, 2 & 3: 540 MW total
  • Morgantown Units 1 & 2: 1200 MW total
  • Boiler Type: Pulverized coal-fired
  • Design Fuel: Bituminous

Project Summary

  • Engineering and procurement of wet flue gas desulfurization systems for 7 units at 3 plants
  • System to remove 98% of the entering SO2
  • Type: Limestone forced oxidation
  • Project Awarded: 2007
  • Operation Date: 2009


B&W Scope

  • Limestone silos, weigh feeders, and milling system
  • Limestone slurry feed pumps
  • Chalk Point: One absorber module
  • Dickerson: One absorber module
  • Morgantown: Two absorber modules
  • Absorber internals, including trays, spray headers and nozzles
  • Absorber recirculation pumps
  • Mist eliminators and wash headers
  • Absorber inlets and awnings
  • Absorber outlet hoods
  • Emergency quench water header and grid design
  • Forced oxidation systems including oxidation air compressors and injection lances
  • Side entry absorber agitators
  • Absorption Plus (Hg)™ enhanced mercury removal system
  • Absorber bleed pumps
  • Make-up water pumps and mist eliminator wash pump



  • Successful startup and commissioning of wet FGD retrofit projects completed in 4th quarter, 2009
  • Performance testing successfully passed in 2nd quarter, 2010

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Computer Generated Three-dimensional Projection of Absorber Modules at Morgantown.

Morgantown 3D