'an improved tower type criculating fluidized boiler (cfb) with optimally oriented combination of heat transfer sections to reduce space and enhance flow distribution across the furnace'

摘要

The invention relates to a An improved Tower Type circulating Fluidized Boiler (CFB) with optimally oriented combination of heat transfer sections to reduce space and enhance flow distribution across the furnace, the improvement is characterized in that the combustor of the boiler is divided by constructing a series of plate-like heat transfer surfaces, in that each of the heat transfer surfaces acting as one of the pre- heating surface for feed water, surface for generating steam, surface for superheating of steam, and surface for reheating steam, in that each of the plate like heat transfer surfaces is formed of a plurality of tubes routed into the combustor along the fins being perpendicular to gas flow direction, and in that the exit point to the heat transfer surfaces is so disposed that the length of the tubes forming the plate-like structure is oriented parallel to the exit plane.