BOILER PLANT Russian patent published in 1995 - IPC

FIELD: power engineering. SUBSTANCE: boiler plant uses boiler 1 and additional tubular air heater 2 with an independent air intake through air duct 8, main tubular air heater 3, electrostatic ash collector 4, device 5 for cleaning of flue gases from sulfur oxides, smoke exhauster 6 and smoke funnel 7 installed in succession in the boiler exit gas path. Exhaust air duct 9 of the air heater 2 through control valve 10 is connected to exhaust gas conduit between device 5 for cleaning of flue gases from sulfur oxides and smoke exhauster 6. Additional tubular air heater 2 can be made integral with the inlet (for gases) section of main tubular air heater 3. EFFECT: simplified design and reduced cost of boiler plant at simultaneous reduction of consumption of auxiliary power. 3 cl, 2 dwg