WASTE-HEAT BOILER Russian patent published in 1995 - IPC

FIELD: power engineering. SUBSTANCE: economizer 3, evaporator 7 and over-heater 8 are received in a vertical gas duct and constructed as rows of finned pipes which is bent over the evolvent. The pipes are connected with distributing and collecting chambers. The collecting chambers are defined by baffles 9, 10 and punched shield 14 positioned inside drum-separator mounted along the axis of the gas duct. Shutter separator 16 is positioned in the zone of the top face of drum-separator 2 to define a steam collector coupled with the distributing chamber of over-heater 8 through pipe 21. Jet pumps are arranged under the baffle inside the distributing chamber of evaporator 7. The active nozzles of the pumps are connected with the collecting chamber of economizer 3. The pipes of the bottom row of the economizer are inclined to the horizon. the pumps are arranged with a spaced relation to baffle 9 and provided with hydraulic drives. EFFECT: improved design. 3 cl, 2 dwg, 1 tbl