The project consisted of the retrofit of individual, wet-type flue gas desulfurization systems to each of the six units to achieve 97% removal of sulfur dioxide (SO2) from the flue gas leaving the boilers and produce marketable gypsum as a byproduct.
The project also included the retrofit of a Selective Catalytic Reduction (SCR) system to three of the units. The SCR systems were designed for >90% removal of nitrogen oxides (NOx) from the boiler flue gas.
WorleyParsons is providing engineering, design, material management, site support and start-up services to Progress Energy in the North Carolina Clean Smokestacks Program. This includes the Phase 1 technology evaluation as well as the Phase 2 detailed engineering, design, procurement, site support and start-up implementation phase.
To date Asheville Units 1 and 2 and Roxboro Unit 2 have met the schedule and performance requirements. Roxboro Units 1, 3 and 4 are on schedule for compliance by November 2008. Asheville Units 1 and 2 received 2nd Place honors in Power Engineering Magazine’s 2006 Project of the Year awards program.
