Combustor

The combustor comprises a pre-combustion chamber, a fuel gas channel, a combustion chamber and a burnout chamber, the pre-combustion chamber is provided with a first end and a second end, the pre-combustion chamber is provided with a secondary air inlet, and the fuel gas channel communicates with the first end of the pre-combustion chamber and feeds flue gas into the pre-combustion chamber; the combustion chamber is communicated with the second end of the pre-combustion chamber, a hemispherical combustion area is arranged at the end, away from the pre-combustion chamber, of the combustion chamber, and rotational flow over-fire air is arranged at an inlet, communicated with the combustion chamber, of the over-fire chamber. The combustor provided by the invention has the advantages of sufficient combustion and low NOx emission. 本发明公开一种燃烧器，燃烧器包括预燃室、燃气通道、燃烧室和燃尽室，所述预燃室具有第一端和第二端，所述预燃室具有二次风入口，所述燃气通道与所述预燃室的第一端连通并向所述预燃室内送入烟气，所述燃烧室与所述预燃室的第二端连通，所述燃烧室远离所述预燃室的一端设有半球体燃烧区域，所述燃尽室与所述燃烧室连通的入口设有旋流燃尽风。本发明提供的燃烧器燃烧充分、低NOx排放的优点。