TEMPERATURE DISTRIBUTION IN A VERTICAL COOLING CRYSTALLISER

Horizontal temperature traverses were taken in Victoria Mill’s vertical cooling crystalliser to test new and previously published computational fluid dynamics models. In addition to runs carried out under normal operating conditions, an experiment was performed to assess the effect of ceasing the stirring. The resulting temperature profiles presented in this paper confirm many, but not all, of the CFD predictions. The contradictions prompted a reappraisal of the role of stirring, in particular. Based on CFD, factory measurements, and analysis, a comprehensive picture of the mechanisms controlling the temperature distribution in a vertical crystalliser is derived and presented.