期刊
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
卷 89, 期 2, 页码 264-273出版社
WILEY-BLACKWELL
DOI: 10.1002/cjce.20403
关键词
spout-fluid bed; draft tube; flow regime; pressure fluctuation; solids loading ratio
Pressure fluctuation data were obtained in a semi-cylindrical spout-fluid bed with draft tube, and statistical analyses of them were employed to recognise flow regimes. Also, the effects of spouting-gas and auxiliary-gas velocities, and length of entrainment zone on solids loading ratio in a draft tube were examined. As a result, five flow regimes appeared by changing spouting-gas and auxiliary-gas velocities and it was found that the simplest method to determine flow regime is to measure pressure fluctuations in a draft tube. Moreover, solids loading ratio could be controlled flexibly by auxiliary-gas velocity and length of entrainment zone.
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