FIELD: thermal engineering; hot water supply for wood-working plants, forestry, and agriculture. SUBSTANCE: device designed for complete combustion of pulverized wood wastes of up to 50% moisture content has metal water shell with water outlet and inlet pipes provided with heat insulation and metal casing; combustion chamber with hatch for solid fuel charging and ignition separated from combustion chamber by means of fire grate; ash pit with port for air admission and slag removal; heat exchanger running in upward direction from ash pit and provided with access holes for cleaning; metal smoke pipe installed under water jacket and connected to heat exchanger; expansion tank with cock and contact thermometer; supporting skids running from water-jacket bottom. Novelty is that device has metal bin with hatch located inside water jacket, its upper contraction communicating with combustion chamber; weighing device for charging pulverized solid fuel communicating with bin hatch; two fire grates, area of one grate being 50% smaller than that of other grate; heat-transfer pipe with lid installed inside bin; junction box mounted above water jacket and connected to upper end of heat exchanger with outgoing smoke pipes connected to bin hatch; tar collector connected to smoke exhauster with smoke pipe. EFFECT: enlarged mass of fuel charged and continuous combustion time. 1 dwg
