| 摘要 |
PURPOSE:To obtain a slurry combustion device, reducing the concentration of unburnt fuel in ash as well as discharged NOx, being provided with high efficiency as well as low public hazard property and never causing the blockade of a fuel passageway, by a method wherein at least one set of branch injection hole, branched from a main injection hole, is provided at the downstream of the mixing section of the main injection hole. CONSTITUTION:A branched injection hole 7 is provided so that the point of intersection between the central axis of a fuel supplying hole 5 and the same of the branch injection hole 7 is positioned at a position 9 at the downstream of the point of intersection 8 between the central axes of the fuel supplying hole 5 and a main injection hole 6. Fuel 3 from the fuel supplying hole 5 collides against the inner wall of the opposing injection hole and is spread so as to form the film of liquid. Fine liquid drops are split from the surface of the liquid film in a split injection hole 7 and atomization is generated in the injection hole 7. Only the fine liquid drops, generated in the joining part of gas and liquid, are injected out of the main infection hole 6. The dispursing density of the fuel is high in the vicinity of the central axis of a burner and reducing flame 13 is formed. The fine liquid drops are plenty in the radial periphery of the burner and are mixed with third combustion are 12 whereby oxiding flame 14 is produced. Accordingly, combustion is progressed in the sequence of the reducing flame 13 and the oxiding flame 14 whereby two-step combustion in a wide sense is effected and the reduction of NOx may be contrived. |
