Practical and regulatory challenges in controlling trace element inputs to soils from land application of fluidized bed combustion residues

摘要

The 165 MW, circulating fluidized bed boiler at the Nova Scotia Power Inc. (NSPI) Point Aconi Generating Station, located in eastern Cape Breton Island, Nova Scotia, is Canada's largest fluidized bed unit. Fluidized bed combustion (FBC) allows the burning of high sulphur (S) fuels with in situ capture of S (removal of SOz). The lower operating temperature of the FBC system (870 C versus 2000 C for pulverized coal boilers) permits the combustion of a wide range of `opportunity' fuels (e.g., petroleum coke <