Environmental Controls Retrofit

Clifton Hill, Mo.

Client / Owner
Associated Electric Cooperative, Inc.
Architect / Engineer
Burns & McDonnell
Graycor Industrial

Project Scope

Associated Electric Cooperative, Inc. awarded Graycor Industrial an environmental controls retrofit project near Clifton Hill, located in northern Missouri. The fast-track project consisted of installing two air heaters and two selective catalytic reduction (SCR) units, demolishing and rebuilding an existing electrostatic precipitator, and performing associated ductwork, structural steel and insulation and jacketing.

Project included installation of the following:

  • 2 SCR units
  • 2 Alstom air heaters
  • 2 Southern Environmental electrostatic precipitators (post-demolition and rebuild) from top of hoppers
  • Ductwork and turning vanes
  • Structural steel
  • Insulation and jacketing
  • Bachman bypass ductwork with diverter dampers
  • 4 Ammonia storage tanks
  • 2 Catalyst storage buildings
  • 2 Elevators
  • Reinforcement of existing ductwork support steel
  • Air duct steam coils
  • 100+ expansion joints