IN-BED HEAT TRANSFER TUBE FOR FLUIDIZED BED BOILER

摘要

The present invention pertains to an in-bed heat transfer tube installed in the fluidized bed of a fluidized bed boiler that burns fuels such as refuse-derived fuel (RDF) and waste with a high calorific value, including biomass and plastic, and recovers combustion heat. This in-bed heat transfer tube (5) for a fluidized bed boiler is installed in the fluidized bed (3) of the fluidized bed boiler (1), and the in-bed heat transfer tube (5) consists of: a water tube (6) through which a fluid flows; a protector (8) for protecting the water tube (6), said protector (8) being disposed on the outer circumferential side of the water tube (6); and a filler layer (7) disposed between the water tube (6) and the protector (8).