FUNNEL FOR DIRECTING MATERIAL LAYER In a fluidized bed boiler, fluidized bed boiler and method in a fluidized bed boiler

摘要

FIELD: power engineering.;SUBSTANCE: boiler with a fluidised bed comprises a furnace limited by walls, a lattice and a vault. Below the lattice in connection with the furnace there is a collector funnel, in which the material of the layer removed from the furnace is driven down. In the collector funnel between its upper and lower edge there are guide plates, which are substantially stretching from the surface of the collector funnel to direct the bed material flow inside the collector funnel. The purpose of guide plates is to level the material flow inside the collector funnel, for instance, by means of prevention of development of the main flow between the inlet nozzle and the outlet nozzle of the collector funnel, and at the same time obtaining bed material flowing in the entire area of the cross section of the collector funnel.;EFFECT: even release of material from a lower area of a boiler and intensified operation of a boiler.;27 cl, 3 dwg