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Erschienen in:
2013 | OriginalPaper | Buchkapitel
Application of Digital Image Processing Methods on the Cluster Structure at the Wall of a Circulating Fluidized Bed
verfasst von : Li Hai-guang, Zhao Zeng-wu, Li Bao-wei, Wu Wen-fei
Erschienen in: Cleaner Combustion and Sustainable World
Verlag: Springer Berlin Heidelberg
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Abstract
This paper describes experiments to investigate the cluster structure of gas-particle flow at the wall region of a circulating fluidized bed (CFB). The setup is in a cold scale-model circulating fluidized bed with a riser that has a 0.30 m 0.28 m cross-section and is 2.9 m tall. A video camera was utilized to visualize the cluster structure through a transparent Plexiglas wall. An image processing system was used to analyze images, which were obtained under different superficial gas velocities and solid circulating rates. The results show that distinctly different cluster structures exist in the different operating conditions, which the number, shape and size of the clusters are affected by main air flow.