| 摘要 |
<p>PURPOSE:To restrain the generation of NOx by a method wherein a box type ejector, having gaps and a size capable of forming recirculating flow at the downstream side thereof, and a gas ejecting port, opposed to the upstream side of the same, are provided. CONSTITUTION:Gas, ejected out of a gas ejecting port 6, is ejected to the downstream side of a box type ejector 5 and forms thick combustion flame. On the other hand, the gas, ejected out of the gas ejecting port 6, and air, which flows through gaps 12 between the box type ejectors 5, are burnt while being collided against and mixed to each other to form thin combustion flame. The thin combustion flame advances thick flame combustion while being mixed to each other. In this case, strong recirculating flows are formed at the downstream side of respective box type ejectors 5 by air streams, which flow through the gaps 12 between respective box type ejectors 5. The recirculating flow becomes a continuous igniting source whereby combustion is stabilized, flames, formed by the recirculating flows, becomes independent flame which will never interfere to each other and will never produce high-temperature flame. According to this method, the generation of NOx can be restrained effectively.</p> |
