JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
Online ISSN : 1881-1299
Print ISSN : 0021-9592
Gas Discharge Modes at a Single Nozzle in Two-Dimensional Fluidized Beds
Cheng-Chung HuangChien-Song Chyang
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1991 年 24 巻 5 号 p. 633-639

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Bubbling, jetting and spouting as gas discharge modes at a single nozzle in a two-dimensional gas-fluidized bed with Group B particles were investigated by means of visual observation and spectral analysis of pressure fluctuations in the grid region. A bubble plume was observed with a frequency of bubble formation in the range 2–7 Hz. Empirical equations predicting the transitions of gas discharge modes were obtained. The flow regimes of gas discharge modes were mapped by using two parameters, the static bed height-to-nozzle diameter ratio and a modified two-phase Froude number.
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© 1991 The Society of Chemical Engineers, Japan
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