Process using a combination, oil, gas, and/or solid burner

Claim 1

The process for burning combustible particulate material comprising introducing said particulate material into a combination burner means adapted to burn oil, gas, and/or solid fuels, having a fuel oil and/or gas inner burner means having means therewith to connect same to a source of oxygen containing gas, a primary combustion chamber having a divergent end portion and positioned adjacent and in substantially coaxial surrounding relation with the outlet of said inner burner means, a passageway, the outer end thereof adjacent and in flow communication with the outlet of said combustion chamber, means with the inlet of said passageway to connect same to a source of oxygen containing gas and a source of particulate combustible solid material, a conduit in one end portion surrounding and in communication with said outlet end of said passageway and said primary combustion chamber and mountable in the other end portion in a furnace wall or the like, said combination burner means being constructed and adapted to burn fuel oil and/or gas in said inner burner means and said combustion chamber, and simultaneously or alone subsequent to said burning burn combustible particulate solid material passed with oxygen containing gas through said passageway into the outlet of said combustion chamber, said passageway in operation passes said solid material and said oxygen containing gas mixture into said conduit at said divergent end portion of said combustion chamber for the combustion of said mixture, said passageway is annular and surrounds said divergent end of said primary combustion chamber, said passageway has a plurality of adjustably mounted air-directing vanes therein, and said means with the inlet of said passageway to connect same to a source of oxygen containing gas and a source of particulate solid material is a manifold means.