A dense phase swirl pulverized 
coal burner comprises a primary 
air channel, a direct flow secondary 
air channel and a outermost swirl secondary 
air channel; and multiple levels of pulverized 
coal concentration rings are arranged axially at intervals along the oil gun casing in a 
straight tube section of the primary air channel, so that pulverized 
coal air flow is distributed thickly outside and thinly inside the primary air 
nozzle. In the invention, dense phase pulverized coal outside the primary air 
nozzle passes through guide vanes, forms disturbed flow, is ejected into a furnace and mixes with high temperature 
backflow flue gas rapidly and sufficiently at an outlet. Meanwhile, dilute pulverized coal air flow at the center is ejected into the furnace by direct flow, ensuring subsequent mixing and 
combustion of pulverized coal flow. The primary air 
nozzle and the secondary air nozzle are provided with cone flaring structures with certain angle to effectively control appropriate mixing of secondary air and pulverized coal. The invention has advantages of strong ignition and 
combustion stability, good coal adaptability, low 
nitric oxide emission, simple primary air channel structure and small resistance, which effectively slows wear rate of parts.