SU1250781A1 - Burner set pulverized fuel system - Google Patents

Description

1 I

This invention relates to fuel combustion and can be used in thermal power plants.

The aim of the invention is to increase efficiency.

The drawing shows schematically the dust system of the boiler unit.

The dust system of the boiler unit contains grinding device 1, separator 2 with pipeline 3 for returning large particles to grinding device 1 and cyclone 4 with hopper 5 and dust suppressor 6. Cyclone 4 is connected by pipe 7 through mill fan 8 with waste burners 9 of furnace 10 of boiler I1 and dust pipe 12 - through the bunker 5 and the feeder 6 pine burners 13 of the firebox 10. The coarse particle return pipeline 3 is equipped with a sequentially installed additional separator 14 and a divider 15 of the pack. The separator 14 is connected by pipelines 17 and 18, equipped with regulators 19 and 20, respectively, to the mill fan 8 and the lower burners 21 of the furnace 10. Dust divider 15 is connected by a dust pipe 22 with the lower part of the furnace 10. Discharge burners 9 and air nozzles 23

Editor Y. Sereda

Compiled by V.Kruglnsky

Tehred N. Bonkalo Proofreader V. Sinitska

Order 4393/31 Circulation 514

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

. Pron water-printing enterprise, Uzhgorod, Projecto st., 4

507812

the fireboxes 10 are connected by air ducts 24 and 25 to the air heater 26. The air ducts 24 and 25 are equipped with regulating organs 27.i

5 Dust system works as follows.

The milled fuel from device 1 is fed to separator 2, from which fine fractions flow into

to cyclone 4. Dust-free drying

the air is directed to the mill fan 8 and then to the burners 9. The dust caught in the cyclone 4 is poured into the dust bin 5, from where it is collected by dust from the feeders 6 through the piping lines 12 to the upper burners 13. Part of the dust returned from separator 2 the divider 15 is fed to the lower ejector burners.

20 21. More fine dust from the separator 14 enters either through pipeline 17 to the inlet of the mill fan 8 and further through the burners 9 to the furnace 10, or via pipeline 18 to the lower

25 ejector burners 21. Hot air is fed to the combustion through nozzles 23 and through burners 9 if the system is open, i.e. the dust-free drying agent is discharged to the path

0 flue gas behind the boiler I1.

Subscription

Claims (1)

BOILER UNIT SYSTEM, containing a grinding device, a separator with a pipe for returning large particles to the grinding device and a cyclone connected by a dust pipe to the main burners of the furnace and a pipe through a mill. Fan with waste burners of the furnace, characterized in that, in order to increase efficiency, the pipeline the return of large particles is equipped with a sequentially installed additional separator with trifle removal pipes connected to the mill fan and the furnace, and a dust divider, soy with a leaded duct with the bottom of the furnace. ) 250781