| 초록 |
Mixing is of great importance in crystallization but there is still a lack of detailed knowledge about the interplay between the kinetics of crystallization and the fluid dynamics.1) Computational fluid dynamics(CFD) can be combined with population balance modeling to explore this interplay. Recrystallization of 3-Nitro-1, 2, 4-triazol-5-one(NTO) has been studied in a batch stirred reactor with PBT impeller, both experimentally and with CFD modeling. Desired performance could be accurately controlled by designing crystal shape and size distribution through recrystallization.The kinetic of crystal growth and nucleation of NTO were measured. The kinetic data was employed along with moments equations to calculate the mean crystal size obtained from a batch cooling crystallization. The CFD model was able to predict the influence of the agitation rate on the area mean particle size and the coefficient of variations of the crystal size distribution(CSD).
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