PRIMARY FURNACE Russian patent published in 1995 - IPC

FIELD: boiler furnaces. SUBSTANCE: afterburning grate with air supply and ash disposal facilities is installed in bottom part of primary furnace and L-shaped finned waterwall is mounted in top part of primary furnace between vertical partition and grate; waterwall projection and front wall of primary furnace form duct of cross-sectional area making up 0.2-0.5 of uptake shaft area. In addition, gas nozzles directed downwards along waterwall are installed in finned waterwall under downtake shaft. EFFECT: enlarged functional capabilities. 2 cl, 1 dwg