Experimental and numerical failure analysis of a rotary vacuum disc lime filter - Part 1: Fluid flow study of filtration process

• Autorzy: Cieslakiewicz, Waldemar F. , Madyira, Daniel , Rodrigues, Marcos Roberto , Grimm, Wilfrid , Scholtz, Dewald
• Języki publikacji: EN

Abstrakty

EN

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 resulting in reduced life and poor separation effectiveness. Common problems include breakage of the 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 a single rotary disc vacuum filter to understand the process parameters that led to this failure. The process parameters were recorded and used to validate a CFD model, which in turn was utilised to conduct a parametric study of the systems. The whole study comprises two parts. The first one presents the numerical and experimental analysis of the fluid (water and slurry) flow in the filter, the second one focuses on the numerical and experimental mechanical evaluation of drum filter membrane material.

Słowa kluczowe

EN

disc vacuum filter; cake formation; cake washing; cake drying; cake discharge; disc wear

• Czasopismo: Technical Sciences / University of Warmia and Mazury in Olsztyn
• Rocznik: 2024
• Tom: Vol. 27
• Strony: 143--160
• Opis fizyczny: Bibliogr. 6 poz., rys., tab., wykr., zdj.

Twórcy

autor

Cieslakiewicz, Waldemar F.

• Department of Mechanical Engineering Science, University of Johannesburg, Johannesburg, South Africa,

autor

Madyira, Daniel

• Department of Mechanical Engineering Science, University of Johannesburg, South Africa

autor

Rodrigues, Marcos Roberto

• Drytech International (Pty) Ltd, Johannesburg, South Africa

autor

Grimm, Wilfrid

• Drytech International (Pty) Ltd, Johannesburg, South Africa

autor

Scholtz, Dewald

• Drytech International (Pty) Ltd, Johannesburg, South Africa

Bibliografia

• DAVIS T.D., CARETTA R.A. 2010. Analysis of a Continuous Rotary-drum Filtration System. AIChE Journal, 56(7): 1737-1738. https://doi.org/10.1002/aic.12098
• GEANKOPLIS C.J., HERSEL A.A., LEPEK D.H. 2018. Transport Processes and Separation Process Principles. Prentice Hall, Boston.
• PETRASCH J., MEIER F., FRIESS H., STEINFELD A. 2008. Tomography Based Determination of Permeability, Dupuit-Forchheimer Coefficient, and Interfacial Heat Transfer Coefficient in Reticulate Porous Ceramics. International Journal of Heat and Fluid Flow, 29(315-326). http://dx.doi.org/10.1016/j.ijheatfluidflow.2007.09.001
• SIVAKUMAR T., VIJAYARAGHAVAN G., VIMAL KUMAR A. 2011. Enhancing the Performance of Rotary Vacuum Drum Filter. International Journal of Advanced Engineering Technology, 2(4): 41-47.
• THELIANDER H. 1990. On the Filtration Properties of Lime Mud. Nordic Pulp and Paper Research Journal, 5(2): 74-82. https://doi.org/10.3183/npprj-1990-05-02-p074-082
• WILLS B.A., FINCH J.A. 2016. Wills’ Mineral Processing Technology: An Introduction to the Practical Aspects of Ore Treatment and Mineral Recovery. Butterworth-Heinemann, Oxford.

Identyfikatory

DOI

10.31648/ts.9549