LIQUID-SOLID FLUIDIZATION STUDIES

TL;DRAbstract

Liquid-solid fluidization studies at room temperature were initiated to evaluate the severity of flow instabilities associated with fluidized beds. In these exploratory tests, bubbling a moderate amount of gas through the fluidized bed completely disrupted the flow pattern. Inclining the cylindrical container at angles up to 20 deg from the vertical did not appear to affect the stability of the upper interface between the fluidized bed and disengaged water; however, at the larger angles pronounced channeling of the water was observed. Agglomeration was indicated in hindered settling tests even though the mean primary particle diameter was about 15 microns. Since the fluidization and hindered-settling velocities were essentially equal, the agglomeration may have existed in fluidization tests also. None of the above instabilities are believed to be sufficiently serious to eliminate the use of the fluidization technique in the design of nuclear reactor cores. Based on heat transfer consid

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