CHARACTERISATION OF THE LOCAL FLOW STRUCTURES IN A HIGH LOADED RISER-REACTOR AT ELEVATED TEMPERATURES

摘要

The local mass fluxes respectively the backmixing behaviour of the gas/solids flows in a riser reactor have been studied experimentally at operating temperatures up to 400℃. The results show that there is a distinct axial dependency regarding the influence of the temperature on the backmixing phenomena. Moreover, investigations at elevation h/H=0,38 depict that temperature has a marginal effect on the solids residence performance, whereas an increasing superficial gas velocity precipitates to a distinct reduction of solids backmixing.