Open Access Open Access  Restricted Access Subscription or Fee Access

Numerical investigation of hydrodynamics of batch crystallizer

Lister H Falleiro, B. Ashraf Ali

Abstract


In this work, hydrodynamics in a draft tubebatch crystallizer is analysed computationally using Computational fluid dynamics (CFD). The CFD simulations are performed using multiple reference frame (MRF) with sliding mesh approach in transient condition for flow time of 5s using the standard k-ε turbulence model. The flow-field in batch crystallizer is quantified by calculating time averaged velocity profiles along the horizontal line and by analysing the temporal variation of liquid velocity at a point. This is further verified by calculating the liquid circulation in such batch crystallizer. To investigate optimum seed crystal injection location, potassium di hydrogen phosphate (KDP) crystals are injected at different locations and is modelled by coupling CFD with discrete phase model (DPM) through Euler-Lagrangian approach.

Full Text:

PDF

References


A. Abbas and J. A. Romagnoli, “Multiscale modelling, simulation and validation of batch cooling crystallisation,” Sep. Purif. Technol., vol. 53, no. 2, pp. 153–163, 2007.

A. Mersmann, Crystallization Technology Handbook, Second edi., vol. 13, no. 4. CRC Press, 2001.

H. A. Mohamed, N. Abdel-Jabbar, K. Takrouri, and A. Nasr, “Model-Based Optimal Cooling Strategy for Batch Crystallisation Processes,” Chem. Eng. Res. Des., vol. 81, no. 5, pp. 578–584, 2003.

B. Ashraf Ali, G. Janiga, E. Tempel, A. Seidel-Morgenstern, and D. Thévenin, “Numerical analysis of hydrodynamics and crystal motion in a batch crystallizer,” J. Cryst. Growth, vol. 372, pp. 219–229, 2013.

N. Doki, N. Kubota, A. Sato, M. Yokota, O. Hamada, and F. Masumi, “Scaleup experiments on seeded batch cooling crystallisation of potassium alum,” AIChE J., vol. 45, no. 12, pp. 2527–2533, 1999.

B. Ashraf Ali, M. Börner, M. Peglow, G. Janiga, A. Seidel-Morgenstern, and D. Thévenin, “Coupled Computational Fluid Dynamics–Discrete Element Method Simulations of a Pilot-Scale Batch Crystallizer,” Cryst. Growth Des., vol. 15, no. 1, pp. 145–155, Jan. 2015.

R. W. Fox, A. T. Mcdonald, and P. J. Pritchard, Fluid Mechanic ! John Wiley & Sons.




DOI: https://doi.org/10.37628/jcep.v3i1.291

Refbacks

  • There are currently no refbacks.