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Minimum spouting velocity of flat-base spouted fluid bed 被引量:4
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作者 esmail r. monazam ronald W. Breault +1 位作者 Justin Weber Ky Layfield 《Particuology》 SCIE EI CAS CSCD 2018年第1期27-36,共10页
Experiments were performed on spout characteristics of a cylindrical spout-fluidized bed (I.D. = 10 cm) with different static heights and two materials (A1203 and high density polyethylene). Results of minimum spo... Experiments were performed on spout characteristics of a cylindrical spout-fluidized bed (I.D. = 10 cm) with different static heights and two materials (A1203 and high density polyethylene). Results of minimum spouting velocity obtained in this study were compared with reported correlations for both spouted and spout-fluidized beds. Considerable discrepancies were found between the values obtained using different model equations as well as with respect to experimental results. Based on the Mathur-Gishler correlation, a new correlation is proposed for calculating the minimum spouting velocity that introduces the ratio U/Umf. It was found that the minimum spouting velocity decreases with increasing fluidizing gas velocity (U/Umf). The pressure drop at the point of minimum spouting velocity is also correlated using this dimensionless group and is presented in this work. This investigation demonstrates that the use of correlations reported in the literature that focus primarily on conical bottom spouted beds are not applicable to fiat-bottom spouted and spout-fluidized beds. 展开更多
关键词 Spouted bed Spout-fluidized bed Minimum spouting velocity Flat-bottom spouted bed
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