Novel flue gas self-reflux low-oxygen combustor

The utility model belongs to the technology field of petrochemical industry, and mainly relates to a novel flue gas self-reflux low-oxygen combustor, a combustion-supporting air guide barrel (4) is disposed in a combustor housing (5), the combustion-supporting air guiding barrel (4) is communicated with a combustion-supporting air inlet at one side of the combustion housing, the center of the combustion-supporting air guiding barrel (4) is also provided with a fuel spray gun (3), the combustion-supporting air guiding barrel (4) is communicated with a flue (6) of heterotype firebricks at the upper part of the combustion-supporting air guiding barrel, the outlet of the combustion-supporting air guiding barrel (4) is provided with a swirler(8), a flue gas flow channel (7) is disposed on the heterotype firebricks (1), the flue gas flow channel (7) is communicated with the flue of the heterotype firebricks. The novel flue gas self-reflux low-oxygen combustor, via low-oxygen combustion and flue gas self-reflux technology, further reduces generation of nitrogen oxide.