DOUBLE-FLOW COAL BURNER Russian patent published in 2013 - IPC F23D1/00 

FIELD: power engineering.

SUBSTANCE: in a body 1 of the burner there is an inlet nozzle 2 of secondary air, which separates a partition 4 into two separate inlet nozzles: 3 for an outer channel 9 of secondary air; 5 - for an inner channel 12 of secondary air. In channels 9, 12 there are accordingly swirling blades 11, 13. A central pipe 8, to which channels 14, 15 adjoin with swirling blades 16, 17. Inlet nozzles 6, 7 accordingly for outer and inner flows of air mixture. Between the adjacent circular channels 3 and 9 of the secondary air there is a non-through channel 18 with holes 19, 20 for separation of flows of secondary air, which makes it possible to ensure break of these flows at the outlet from the burner, which brakes down their mixing and reduces formation of nitrogen oxides in combustion products.

EFFECT: provision of efficient conditions of ignition and burning of fuel.

2 cl, 1 dwg