油页岩流化床燃烧污染物排放特性

在小型热态流化床燃烧实验台上进行了桦甸油页岩的燃烧污染物排放特性实验研究，得到了床温、油页岩颗粒粒度、Ca/S摩尔比、过量空气系数对油页岩流化床燃烧过程中SO2、NO、NO2等污染物排放特性的影响，实验结果表明：在床温为800~950℃、Ca/S摩尔比为5~7、过量空气系数为1.4，油页岩颗粒粒度适宜时各种污染物排放量相对最低，流化床在此工况下运行最合理。然而，流化床的常规运行温度虽然对SO2排放控制有利，但却不利于NOx污染物的排放控制；随着Ca/S摩尔比的增加各种污染物排放量明显下降；随过量空气系数的增加，各种污染物排放量开始均有所增加，而后逐渐下降。

Release Characteristic of Gaseous Pollutants From an Oil Shale-fired Fluidized Bed

A hot experiment of gaseous pollutants was carried out with Huadian oil shale samples by using an oil shale-fired fluidized bed (CFB) laboratory-setup. The effect of bed temperature, particle size, molar Ca/S ratio, and excess air factor on SO2, NO, NO2 emissions were studied, from which the optimum operating condition for the lowest gaseous pollutants emissions from CFB was recommended: bed temperature of 800~950 ℃, molar Ca/S ratio of 5~7, and excess air factor of 1.4, and middle particle size is optimum. Nevertheless, general temperature of fluidized bed with the release and control of SO2 is in good stead, but with the release and control of NOx is adverse. With the increasing of the Ca/S, the gaseous pollutants concentration all decreases rapidly. With the increasing of the excess air factor, the gaseous pollutants concentration all increases a little firstly and then decreases gradually.