BOILER FURNACE WITH CIRCULATING LAYER Russian patent published in 1995 - IPC

FIELD: boilers. SUBSTANCE: boiler furnace with circulating layer has combustion chamber 1 bounded with screens 2 and air distributing grate 4 and traps for circulating particles which are connected to combustion chamber 1 by means of particles return passages 6. Screens 2 are sectionalized in height by pouring particles collecting traps 3 which are made in form of baffle plates 15 which are secured on screens 2 and are inclined relative to them; these partitions are provided with straight-way passage 16. Particles return passages 6 may be connected to combustion chamber 1 through screens 2 sectionalized in height by traps 3. EFFECT: enhanced reliability. 2 cl, 4 dwg