The present invention relates to the technical field of burners, and in particular to a universal full-time ultra-
low nitrogen burner, comprising: a
combustion assembly, the
combustion assembly comprising a
combustion tube and an outer tube mounted on its outer layer, the cavity formed between the combustion tube and the outer tube being connected to a return
air cavity, a
combustion chamber being arranged in the combustion tube, the inlet end of the
combustion chamber being respectively connected to a
powder inlet, a
plasma igniter and a purge
assembly; a
tempering nozzle, arranged on the inner wall of the
combustion chamber outlet end, and its air inlet being connected to the cavity between the combustion tube and the outer tube, and its air outlet being connected to the combustion chamber and opposite to the
powder inlet direction; a
tempering channel, arranged on the inner wall of the combustion chamber, between the
tempering air outlet of the tempering
nozzle and the purge air outlet of the purge assembly, and having openings at both ends connected to the combustion chamber, for solving the technical problem in the prior art that the
continuous operation of the burner needs to rely on a
plasma igniter, resulting in low combustion efficiency.