Solids mixing in a fluidized bed riser
作者： Chaoyu Yan , Yiping Fan , Chunxi Lu , Yongmin Zhang , Yansheng Liu
DOI: 10.1016/J.POWTEC.2009.02.015
关键词:
摘要: Abstract The solids mixing in a riser with height of 10 m and 0.186 m inner diameter was investigated by using pneumatic phosphor tracer technique. Considering the shielding effect bed material on light emitted from particle, modified method for measurement is proposed. And then curves particle residence time distribution were obtained. experimental results show that diffusion mechanism can be explained dispersions dispersed particles clusters axial direction, as well core–annulus nonuniform fraction radial direction riser. Moreover, based results, two-dimensional dispersion model established to predict diffusion. Furthermore, effects superficial gas velocity circulating flux Peclet number discussed; two empirical correlation formulas about numbers given; calculated values agree results.
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