MULTI-NOZZLE RECUPERATIVE TUBULAR BURNER Russian patent published in 1998 - IPC

FIELD: ferrous metallurgy. SUBSTANCE: burner includes cylindrical housing 1 with air supply branch pipe 2, tubular gas collector 3 arranged coaxially in housing, axial blade air swirler 4 located in circular clearance between burner housing and gas collector, air collector 5 mounted coaxially relative to gas collector and tubular connector adapter 6. Air collector 5 is provided with radial nozzles 7 located at expansion angle within 15-30 deg; lower row of nozzles is shifted from vertical axis by 15 dwg; end upper row of nozzles is mounted below horizontal axis of burner. Cylindrical housing 1 of burner is provided with radially directed holes 14 for supply of secondary combustion air. In center of end portion of burner fire nozzles is provided for feeding gas from gas collector through gas nozzle 15 whose mouth is received by round hole 16 having frame in form of cylindrical tip 17 at interior bevel angle of 60 dwg to its axis. Burner is welded of sheet metal and standard tubes of different diameters. EFFECT: enhanced efficiency. 5 cl, 5 dwg