Experimental and Numerical Failure Analysis of a Rotary Vacuum Disc Lime Filter - Part 1: Fluid Flow Study of Filtration Process
Waldemar Cieslakiewicz
a:1:{s:5:"en_US";s:26:"University of Johannesburg";}Daniel Madyira
Marcos Roberto Rodrigues
Wilfrid Grimm
Dewald Scholtz
Abstract
The mechanical separation of solids from liquids (filtration) is a critical process in many chemical process industries. The rotary drum filter can be considered a work-horse device which is one of the oldest filtration devices that has been used for centuries. Its reliability is affected by several process parameters leading to reduced life and poor separation effectiveness. Common problems include breakage of filtration medium, wear of filtration holes and breakage of the backing plates. In this work, a study is conducted to understand the causes of significant wear exhibited in one rotary drum vacuum filter to understand the process parameters that led to this failure. A record of the process parameters was recorded and used to validate a CFD (CCM+) model that was used to conduct a parametric study of the systems.
Keywords:
Drum vacuum filter, Cake formation, Cake washing, Cake drying, Cake discharge, Disc wearReferences
T. Sivakumar, G. Vijayaraghavan and A. Vimal Kumar, “Enhancing the Performance of Rotary Vacuum Drum Filter,” International Journal of Advanced Engineering Technology, vol. II, no. IV, pp. 41-47, 2011. Google Scholar
H. Theliander, “On the Filtration Properties of Lime Mud,” Nordic Pulp and Paper Research Journal, vol. 5, no. 2, pp. 74-82, 1990.
Crossref
Google Scholar
T. D. Davis and R. A. Caretta, “Analysis of a Continuous Rotary-drum Filtration System,” AIChE Journal, vol. 56, no. 7, pp. 1737-1738, 2010.
Crossref
Google Scholar
B. A. Wills and J. A. Finch, Wills’ Mineral Processing Technology: An Introduction to the Practical Aspects of Ore Treatment and Mineral Recovery, Oxford: Butterworth-Heinemann, 2016.
Crossref
Google Scholar
C. J. Geankoplis, A. A. Hersel and D. H. Lepek, Transport Processes and Separation Process Principles, Boston: Prentice Hall, 2018. Google Scholar
J. Petrasch, F. Meier, H. Friess and A. Steinfeld, “Tomography Based Determination of Permeability, Dupuit-Forchheimer Coefficient, and Interfacial Heat Transfer Coefficient in Reticulate Porous Ceramics,” International Journal of Heat and Fluid Flow, vol. 29, pp. 315-326, 2008.
Crossref
Google Scholar
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