火焰特征发射谱线研究

本文利用CCD光纤光谱仪,通过实验确定了木基燃料燃烧火焰光谱中出现的特征谱线是K,Na 的原子发射谱线,测定了特征谱线出现时的火焰温度,指出可以通过特征谱线的出现与否来确定火焰的温度范围。还发现火焰的光谱形状和火焰的燃烧状态密切相关,包含大量和燃烧有关的信息,并且对煤烟颗粒有较强的抗干扰性。通过对火焰光谱形状的分析可判断出火焰的燃烧状况,进行燃烧诊断。

INVESTIGATE INTO THE CHARACTERISTIC EMISSION LINE OF FLAME

By using the CCD fiber-optic spectroscopy, the paper proved that the characteristic line inside of the flame spectrum is atom emission spectrum of K and Na. At the same time we also had measured the flame temperature when the characteristic line appeared and had poinied out that one could estimate the scope of temperature of the flame through observing whether the characteristic line is appearing or not. The experimeat discovered that the shape of flame spectrum had closely relationship with the combustion condition which had stronger anti-interference competence to the soot, involved in a lot of information related to combustion. Through analysis flame spectrum shape, we could judge the combustion condition.