Gas-solid agitated fluidized beds can be used to improve the fluidization performance of sticky polymer particles. Experimental pressure fluctuation signals were analyzed with statistics analysis

power spectrum analysis and wavelet analysis for investigating the influence of agitation speeds and types of agitators on the fluidization characteristic. Due to the effects of suppression and breakage on bubbles caused by agitation

lower pressure fluctuation amplitude and smaller bubbles were found in the agitated fluidized bed compared to general fluidized bed. The synergy between gas flow and agitation occurred in the agitated fluidized bed. For a gas-solid fluidized bed with an anchor impeller or a frame impeller

sufficiently high agitation speed was needed to improve fluidization performance. However

for self-cleaning agitator

higher agitation speed engendered adverse phenomena of gas short circuit and particles accumulation near the blades. Therefore

the feasible agitation speed was recommended for extending the application of the new self-cleaning agitator in industry.