应用电容层析成像(ECT)方法对循环流化床(CFB)顶部的固体浓度分布进行了测量;应用小波分析进行信号降噪和图像重建的改善.研究发现小波分析有双重作用:(1)降低ECT重建图像中的噪声;(2)对粗像素划分造成的图像粗燥边界产生平滑作用.数据显示了循环流化床顶部的固体浓度分布,尤其是角部和出口处的较高固体浓度.
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