Boreskov Institute of Catalysis of the Siberian Branch of Russian ...

PP-II-6HYDRODYNAMICS OF GAS-SOLID FLUIDIZED SPOUTED BEDSUSING OPTICAL PROBES AND GAMMA RAY COMPUTEDTOMOGRAPHYVesna Havran, Derek Starkey, Josh Gram, Sean Mueller, Fadha Ahmed,Muthanna Al-DahhanChemical Reaction Engineering Laboratory (CREL)Department of Energy, Environmental and Chemical EngineeringWashington University in St. LouisSt. Louis, MO 63130, USAGas-solid fluidized spouted bed has been used widely in various applications that includeboth chemical and physical processes, including chemical vapor deposition (CVD) coating.Unfortunately, the scale-up and design of the current processes using gas-solid spouted bedshave been based on empirical approaches and are operated as «black boxes» due to lack offundamental understanding of the hydrodynamics of spouted beds. Hence, in this work a newoptical probe has been developed to study the solids and gas holdup profile and solidsvelocity in gas-solid spouted beds. The technique has been used to investigate theseparameters in two spouted beds of 3 inch and 6 inch diameter using solids that give match andmismatch in hydrodynamics similarity. Gamma ray computed tomography has been used toevaluate and validate the measurements of the newly developed optical probe and toinvestigate the time averaged cross sectional distribution of both solids and gas holdups.In this presentation, the results and findings will be discussed.283