Alstom has announced today it was awarded a contract worth approximately €50m by Enelpower S.p.A., a unit of the Enel Group (Enel), to engineer, design and supply equipment for what will be one of the world’s largest circulating fluid bed (CFB) boilers.

The new CFB will be the backbone of the Enel Sulcis repowering/cogeneration project currently underway in Portoscuso, Sardinia. Upon completion in 2004, the Sulcis plant will supply Sardinia’s power grid with 220 MW of electricity and the nearby Eurallumina S.P.A. aluminium production facility with 390 T/H of process steam.

The unit’s combined electrical/process steam power output will be approximately 320 MW, making the CFB the largest in the world.

By choosing CFB technology to replace the recently demolished 240 MW pulverised coal-fired units, Enel will be able to minimise and control its fuel costs by burning a blend of imported and local high sulphur coals in an environmentally friendly manner.

Under the contract, the Alstom CFB design will limit the plant’s NOx, CO and SO2 emission levels. The contract also gives Enel the option to build a second unit at the site.

Since 1986, ALSTOM has supplied a total of 84 environmentally-friendly CFBs representing roughly 8000 MWe (gross electric output) of power, worldwide. These units cleanly burn a wide variety of fuels, including biomass, bituminous and sub-bituminous coal, anthracite, lignite, petroleum coke, and coal washery wastes.