Abstract
In this paper, the whole system of coating furnace is simulated based on 3D single phase simulation to optimize the FB-CVD (Fluidized Bed-Chemical Vapour Deposition) reactor structure design, which is called the multiple-ring inclined-nozzle spouted bed. The spouted bed with present and enlarged diameter for two times of production, were simulated using a 3D CFD model in a complex geometry, aimed at proposing a quick scale-up strategy of the coating furnace. A new scale-up criterion is proposed and discussed based on single-phase two-component simulation results, which were central-inlet gas concentration distribution at different furnace heights. Four cases of the newly design with enlarged diameter of spouted bed was compared quantitatively, and one was recommended to use firstly in the coating experiments based on the newly proposed scale-up criterion. The present China SFE (Spherical Fuel Element) commercial production line (300000 SFEs per year) will be updated based on the present scale-up research results, aimed at providing the SPE for the HTR-PM600 in the future.
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