GB228776A - Improvements in burners consuming liquid, gaseous, or solid fuel - Google Patents

Abstract

228,776. Greenawalt, J. E. June 26, 1924. Atmospheric gas, spray, and pulverulent-fuel burners. - A liquid, gaseous, or solid fuel burner suitable for use in apparatus for roasting and sintering ores comprises a fuel and air mixing chamber 16, a cylindrical housing 15 surrounding the mixing chamber, oil distributing, dividing, and air distributing discs 22, 24, 23 fitting on a boss 21 on the housing 15, and a cap 25 which is secured to the chamber 16 by a stud 26 so as to clamp the aforesaid parts together. The fuel enters the chamber 16 through a pressure spraying nozzle 36 on a pipe 35 arranged in a top cap 32 bolted to a flange 17 on the chamber 16. Air is supplied through an inlet 0 in the cap 32 at a lower pressure than that of the fuel. Part of the air passes through perforated discs 38 in the chamber 16 to mix with the fuel sprayed from the nozzle 36, and the remainder passes through apertures 37 in the chamber 16 to the annular space, S between the chamber and the housing. The fuel-air mixture leaves the chamber 16 through a series of tubes 45 leading to radial discharge slots 43 in the disc 22. The air leaves the space S through an opening 27 in the bottom wall of the housing and passes through a central chamber 50 and radial channels 51 in the cap 25 to radial discharge slots 44 in the disc 23 registering with the slots 43. The disc 24 is formed with a series of radial slots 49<1> registering with the slots 43, 44 but comparatively short in length so that the fuel-air mixture and air issuing from the slots 43, 44 meet only just before discharge. When a solid fuel such as powdered coal is to be burnt, the atomizer 36 is dispensed with and the fuel is blown through the pipe 35 by an air blast.