Electric power plant for burning fuel in a fluidized bed of particulate material.

摘要

GENERATING PLANT IS PRESENTED TO BURN FUEL primarily carbon in a fluidized bed (18), preferably a PFBC GENERATING PLANT. A vessel (12) is divided into a combustion chamber (22) and an ash chamber (24) by an air distributor (16) with nozzles (42) for the supply of air for fluidization of the bed (18) and fuel combustion. AIR DISTRIBUTOR (16) is provided with openings (44) through which the bed material may pass from the combustion chamber (22) to the ash chamber (24). Also provided are tubes (54) to generate steam. TUBES (56) to superheat steam are arranged in the ash chamber (24). The plant is provided with a transport system (66) to direct BEDDING MATERIAL FROM THE CHAMBER OF ASHES (24) to the combustor (22). TRANSPORT FROM THE CHAMBER OF ASHES (24) CIRCULARA bed material between combustion CAMARADE (22) AND THE CHAMBER OF ASHES (24). Regulating the amount of bed material circulating also regulated HEAT SUPPLY TUBE OVERHEAT (56), and so may overheat the steam that passes through the tubes (56).