Eulerian-Lagrangian Analysis of Multiphase Flow in Urea Prilling Process with Phase Changing

• Main Authors: G.A.N. Ricardo, D. Noriler, W.P. Martignoni, H.F. Meier
• Format: Article
• Language: English
• Published: AIDIC Servizi S.r.l. 2013-06-01
• Series: Chemical Engineering Transactions
• Online Access: https://www.cetjournal.it/index.php/cet/article/view/6757

The objective of this work is the mathematical formulation of a prilling tower taking into account the solidification of the urea droplets, calculated by a shrinking unsolidified core model. The multiphase gas- liquid flow was modelled using the Eulerian-Lagrangian approach, where the turbulence was treated with the Reynolds Averaged Navier-Stokes (RANS) equations. The turbulence was modelled with the standard k-e model. The partial differential equations of the models were discretized using the finite volume method. A source code was written in C language programming and linked in the CFD software. The code consists of subroutines for solidification and the thermal coupling between the phases. A numeric simulation was conducted to analyse the physical consistency of the models and subroutines, whose results showed good agreements.