细水雾作用下原木楞堆火烟气状况研究

Study on the log pile fire flue gas concentration under the action of water mist

在大尺寸受限空间内,就细水雾对楞堆火烟气的影响进行实体实验研究。研究表明:楞堆的燃烧没有产生特别耗氧的情况;细水雾能有效降低烟气中CO2的体积分数,且细水雾飘浮时间越长,CO2体积分数下降的就越明显;细水雾施加初期,破坏了楞堆火的燃烧反应过程,使燃烧不充分,CO体积分数激增,之后CO体积分数的变化,则要取决于楞堆被扑灭的效果,及其是否存在阴燃现象。

The experiment was carried out in the large size and limited space, to study on the effects of water mist on the log pile fire flue gas condition. Studies have shown that： The corn bustion doesn＇t consume too much oxygen; water mist can reduce the concentration of carbon dioxide in flue gas effectively, and the longer water mist floating, the more significantly carbon dioxide concentration decreased; at the early stage , water mist damages the burning reaction process, which lead to in complete combustion eouple with carbon monoxide concentra tion increasing; the further change of carbon monoxide concen tration depends on the extinguished effect of the log pile, and whether smoldering phenomena exists .