VORTEX PULVERISED COAL BURNER Russian patent published in 2011 - IPC F23D1/02 

FIELD: power engineering.

SUBSTANCE: vortex pulverised coal burner comprises a body 2 with coaxially installed central pipe and shells that form circular channels of dust and air mixture, kindling air and at least one channel of secondary air, at the outlet ends of these channels there are axial swirlers, besides, at the outlet end of the burner at the end of the middle shell 10, which forms a channel of dust and air mixture 5, there is an outlet confuser 22 with a narrowing angle 10-35° and an extent of this section coverage of 0.2-0.7, and at the end of the outer shell 11, which forms an outer channel 7 of secondary air, there is an outlet diffusor 23 with an opening angle of 20-35° and an extent of this section coverage of 0.2-0.7.

EFFECT: reduced generation of nitrogen oxides and stable ignition and burning of pulverised coal in a wide range of loads when burning low-quality coal fuel.

2 cl, 3 dwg