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NSP, French Island Power
Station
Project Description Scope of Supply The first installation (Unit #2) was started up in 1981 and generates 150,000 pounds of steam per hour fired on 100 percent wood waste. During 1989, this unit was converted to utilize 50 percent RDF and 50 percent wood waste fuel by incorporating a new high-volume tramp removal system to accommodate the large increase in noncombustible tramp material in the fuel. This unit received the Power Magazine "Energy Conservation Award" in 1983. In 1987, the second boiler/turbine facility in the same plant was retrofitted to fluidized bed firing. This boiler, Unit #1, also generates 150,000 pounds per hour of steam at 450 psi and 750 F. The fuel consists of 50 percent wood waste. The steam drives a 15 MWe turbine generator. The conversion included replacement of the boiler grate with a bubbling fluid bed unit complete with inbed heat transfer surface. A new economizer, air preheater and multiclone were added. Gas cleanup is accomplished in a gravel bed electro filter. The French Island facility received the 1988 Wisconsin Governor's Award as a leader in utilizing alternate fuels.
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Energy Products of Idaho
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