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为研究塑料与稻壳共燃的氮氧化物生成规律,在自行设计的循环流化床装置上进行了二者的共燃实验。研究了温度、塑料粉和稻壳的混合比例及过量空气系数对NO生成量的影响。实验结果表明,随温度升高,NO生成量升高;随塑料粉与稻壳混合比例增加,NO生成量呈降低趋势,且NO的生成量低于二者单独焚烧时生成量的线性叠加;随着过量空气系数增加,NO生成量降低。为寻找二者共燃NO生成的一般性规律,采用径向基神经网络建立了NO生成的预测模型,预测结果显示该模型具有很高的精度。
In order to study the formation of nitrogen oxides co-fired with rice husk, a co-firing experiment was conducted on a self-designed circulating fluidized bed reactor. The effects of temperature, mixing ratio of plastic powder and rice husk and excess air ratio on NO production were studied. The results showed that with the increase of temperature, the amount of NO increased. With the increase of mixing ratio of plastic powder and rice husk, NO production decreased and NO production was lower than that of single combustion. As the excess air ratio increases, NO generation decreases. In order to find out the general rule of NO generation, the prediction model of NO generation is established by using RBF neural network. The prediction results show that this model has high precision.