SMOKE GAS RECIRCULATION DEVICE Russian patent published in 2021 - IPC F23C13/00 

FIELD: heat engineering.

SUBSTANCE: invention relates to heat engineering and can be used in hot water boilers. The device contains a burner 1 with radially built-in nozzles 2 located around the circumference of the burner. The branch pipes are made in the form of pipe sections, the inlet necks of which are located in a special cavity 3 of the boiler furnace, and the outlets are inside the burner and are bent in the direction of the air flow. Due to the rarefaction that occurs when the outlets of the pipes are washed with a stream of air, flue gases are sucked in from a special cavity and mixed with air. To regulate the degree of recirculation of flue gases, the branch pipes are equipped with controllable dampers 4.

EFFECT: lowering the oxygen concentration in the fuel-air mixture by lowering the combustion temperature of the fuel in the boiler.

1 cl, 2 dwg