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The scale-up method for three-phase fluidized beds hydrodynamics proposed by Safoniuk et al. [M. Safoniuk, J.R. Grace, L. Hackman, C.A. McKnight, Chem. Eng. Sci. 54 (1999) 4961], based upon the principles of dynamic similitude, was tested matching several systems operated at high pressure with model systems operated at atmospheric pressure. Experiments were carried out to test this technique by comparing...
The effect of pressure on basic hydrodynamics of ebullated beds at elevated pressures of up to 15Mpa was studied by measurement of bed profiles by gamma-ray densitometry. For 1.7mm glass beads the bed expansion as well as gas holdup increased with pressure, while liquid and solids holdup decreased. Given the solids holdup is available, it was found that the generalized bubble wake model could be applied...
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