Minnesota Power, a division of ALLETE, Inc. awarded Hitachi a contract to design and supply Wet FGD and SCR for its Boswell Energy Center - Unit 3.
Hitachi will provide a wet flue gas desulfurization (FGD) system for sulfur dioxide (SO2) removal and a selective catalytic reduction (SCR) system for nitrogen oxides (NOx) removal. The scope also includes all interconnecting flue gas ducting and structural support steel.
The 350 MW Boswell Unit 3, located in Cohasset, Minn., is fueled by Powder River Basin coal. The Hitachi supplied AQCS is expected to reduce SO2 by 98% and NOx emissions down to 0.05 lbs/MMBTU. Execution of this project is on a fast track basis, with the system scheduled to commence operation by the 4th quarter of 2009.
Hitachi is working closely with Minnesota Power's engineer, Burns and McDonnell, to ensure a well coordinated design and delivery scheme for construction. Burns & McDonnell is providing the entire balance of plant design.