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circulating fluidized bedA type of furnace or reactor in which the emission of sulfur compounds is lowered by the addition of crushed limestone in the fluidized bed, thus obviating the need for much of the expensive stack gas clean-up equipment. The particles are collected and recirculated, after passing through a conventional bed, and cooled by boiler internals. Related category• ECOLOGY AND THE ENVIRONMENTAlso on this site: Encyclopedia of Science Encyclopedia of History |