Le cyclone, un réacteur de sublimation: Application à la sublimation de l'acide isocyanurique

Abstract The purpose of the present paper is the experimental and theoretical study of the behaviour of the cyclone for carrying out the fast sublimation of solid particles. The experiments are performed with isocyanuric acid that sublimes at 633 K. They show that the phase change may reach 99% efficiency in less than 1 s for particles smaller than 80 μm and for wall temperatures higher than 1000 K. A first model using the heating and sublimation times of the solids and taking into account their initial size distribution gives results in a good agreement with experiments. It is possible in a second model to gather all the experimental results by using a unique particle size, the process then being characterized by sublimation and heat exchange time constants.