Project Owner:
Public Service Company of Colorado, an Xcel Energy Company

Completion Date: 2009

UE is presently serving as owner’s engineer and has completed preliminary engineering for this project. The project consists of a 750MW supercritical pulverized coal unit located at the Xcel Energy Comanche Station near Pueblo, Colorado.

The pulverized coal-fired unit will feature low-NOx burners and selective catalytic reduction to control nitrogen oxide (NOx), a fabric filter dust collector (FFDC) to capture particulates, a lime spray dryer to control sulfur dioxide (SO2) and mercury emission controls. The project includes the addition of dry scubbers, low NOx burners and mercury controls on the existing Units 1 and 2 which are each rated at 350 MW.

UE was responsible for preliminary engineering, including BACT analysis, P&IDs, electrical one lines, general arrangements, preliminary specifications for major equipment, developing bid packages, overall project schedule and cost estimate. UE will also be providing field support during the construction, start-up and testing phases of the project.

UE has produced multiple heat and mass balance models for various plant configurations, including air-cooling and hybrid cooling. Various cycle options were studied, such as number of feedwater heaters, sub vs. supercritical cycles, pressure and temperature levels and design configurations. UE has also prepared specifications for the boiler, the steam turbine and geotechnical services, and is in the process of preparing specifications for air quality control equipment.

Services Performed:

• Owner’s Engineer
• BACT analysis
• Planning, estimating and scheduling
• Procurement specifications, evaluations and support
  
  

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