| 摘要 |
PURPOSE:To contrive reduction of noncombustion part and NOx even in a small combustion furnace by mixing up a flame and air with each other rapidly, by supplying surplus air for two-stage combustion as a circulation flow in a direction crossing the flame. CONSTITUTION:A burner 2 which forms an imperfect combustion flame 25 burning with less logical air quantity for fuel is provided in a burner port 27 on a front wall side of a combustion furnace 1, while an air port 3 which supplies surplus air for two-stage combustion as a circulation flow in a direction crossing a flame 25 to a side wall side. With this, noncombustion carbon and soot are prevented from occurring simultaneously with reduction of NOx, as second step combustion is completed by lengthening the flame 25 and an air jet flow 26's stay. |
