The utility model belongs to the technical field of burners, and particularly discloses a high-speed low-
nitrogen burner which comprises an air shell, a gas
pipe, a
burning head and a burner
nozzle, the gas
pipe is arranged in the center of the air shell, the gas inlet end of the gas
pipe extends out of the air shell, the
burning head is arranged at the gas outlet end of the gas pipe, and the burner
nozzle is arranged on the side, close to the
burning head, of the air shell. A
nozzle is formed in the end, away from the air shell, of the burner nozzle, an inner cavity is formed in the burner nozzle, the
combustion head is arranged in the inner cavity,
fuel gas and a small amount of air can be mixed through the
combustion head to form an
oxygen-deficient state, incomplete
combustion is carried out in the
oxygen-deficient state, the combustion temperature can be lowered, and
NOx generation can be reduced. Incomplete combustion enters the inner cavity through the gas outlet and is mixed with excessive air in the inner cavity for combustion, the
mixed gas can be fed into the
hearth for combustion, CO can be converted into CO2, and
NOx and CO generated during combustion of the burner can be efficiently and reliably reduced only through the combination of three simple structures.