Circulating fluidized bed (cfb) with in-furnace secondary air nozzles

摘要: A circulating fluidized bed (CFB) boiler includes a reaction chamber, where bubbling (BFB) is contained within an enclosure the lower portion of chamber and contains in-bed heat exchanger (IBHX) that occupies part floor. plurality secondary air nozzles comprise tubes which are grouped together run across width BFB between wall outside CFB. The positioned to prevent deflection solids falling onto from CFB by jets while avoiding complicated structure would interfere with gas and/or movement in furnace. nozzles' exit openings flush, or almost wall.