pulverized fuel jet compact burner

摘要

In the present invention, there is disclosed a compact jet burner for combustion of pulverulent brown and black coal in tangential furnaces, suitable for combustion with a low generation of nitrogen oxide NOix emissions and eliminating slag deposits on the furnace walls. The invention is characterized in that the burner consists of one or several compact units (4) each of which being formed by two or several tetragonal nozzles (1) of primary mixture, whereby each tetragonal nozzle (1) of the primary mixture is surrounded from upper and bottom sides by adjacent secondary nozzle (2) in close proximity thereof but spaced therefrom at the most up to 100 mm and from outer side being surrounded by a side secondary nozzle (3) in close proximity thereof but spaced therefrom at the most up to 250 mm so that said side secondary nozzles (3) are directed to the circumference of an imaginary circle in the furnace axis alike the burner axes in order to ensure rotary motion of gases when a group of at least three compact jet burners is arranged inside the furnace.