BOILER INSTALLATION Russian patent published in 1997 - IPC

FIELD: heat engineering; boiler installations with boilers furnished with regenerative rotating air heaters. SUBSTANCE: boiler installation has boiler 1 with air heater with rotor 2 and housing 3 communicating through gas compartment 4, gas duct 5 of boiler 1 and smoke stack 6 with smoke exhauster 7 and through air compartment 8 it communicates through air duct 9 of burner 10 with fan 11. It has also recirculating gas smoke induced draught fan 12 through which gas duct is connected by recirculating line 13 at side of air outlet to supply branch pipe 14 of first sealing sector 15 arranged before second sealing sector 16 after air compartment 8 in direction of rotation of rotor 2. Outlet branch pipe 17 of sector 15 and inlet branch pipe 19 are furnished with valves 18, 20, first of which is connected to smoke stack 6 after air heater and second is connected to line 13. Outlet branch pipe 21 is connected with air duct 9, collector 22 is connected with burners 10 through pipeline 23, through pipeline 23; through pipeline 24 and valve 25 it is connected with line 13; pipeline 26 and valve 27 are connected with branch pipe 17 at outlet of sector 15. Branch pipe 19 is additionally connected through valves 28, 30 and cooler 29 to line 13 which is connected through valve 31 to housing 3 connected through valve 32 to branch pipe 17 of sector 15. EFFECT: enlarged operating capabilities and reliability of operation. 2 cl, 1 dwg