RS50366B - Burner for the combustion of particulate solid fuel - Google Patents

Abstract

Solid propellant combustion burner, especially particulate coal with a high ballast content, comprising a secondary air tube (3) positioned about the longitudinal axis (27) of the burner, which is ultimately facing opposite the burner outlet (2) closed by a front wall (38) for introducing all secondary air, and a tube (4) for the primary mixture concentrically surrounding the secondary air tube (3) forming one annular cross-section (9) for introducing primary air or. primary gas and fuel, wherein the primary mixture tube (4) has one area (49) of current stabilization, which is observed in the direction of the current (20) of the primary mixture, located along the secondary air tube (3), one inlet housing (28) for supplying a stream (19) of secondary air which, viewed in circumference, surrounds at least one part of the pipe (4) for the primary mixture and forms one radial channel (40), and at least two flow channels (35) for introducing current (19) ) of secondary air from the duct (40) to the secondary air duct (3), which connect the duct (40) to the inner cross section of the secondary duct (3) and pass through the annular cross section (9). The application contains another independent and 26 dependent claims.