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12 February 2007 -- Hitachi Power Systems America, Ltd., a wholly owned subsidiary of Hitachi America, Ltd., has been awarded a contract to design and supply an environmental controls retrofit for Minnesota Power, a division of ALLETE, Inc., at its Boswell Energy Center's Unit 3. Financial terms were not disclosed.
Hitachi Power Systems America will provide a wet flue gas desulfurization (FGD) system for SO2 removal and a selective catalytic reduction (SCR) system for 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 system is expected to reduce SO2 by 98 percent and NOx emissions down to 0.05 lbs/MMBTU. Work on the system is scheduled to commence by late 2009.
Hitachi is coordinating with Minnesota Power's engineer, Burns and McDonnell, for the design and delivery scheme for construction. Burns & McDonnell is providing the entire balance of plant design.
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