Measuring and Modeling the Performance of Rigid Ceramic Filters

https://doi.org/10.22146/ajche.50807

T. G. Chuah M(1*), J. P.K Seville(2)

(1) Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, UPM, Selangor D.E., Malaysia.
(2) School of Chemical Engineering, The University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
(*) Corresponding Author

Abstract


Rigid ceramic filters have been proven to be highly efficient gas filtration devices. However, they must be cleaned periodically for maximum efficiency. This is done by applying a pulsed reverse flow. The cleaning mechanism by which the deposited dirt is removed from the filter surface is still not fully understood. Experiments were carried out to measure pressure drop along the axis of two different candle geometry, cylindrical and tapered. For the cylindrical filter, the reverse pulse pressure was not uniformly distributed along the element. Generally, the pressure difference across the wall of the element is highest at the close end, and lowest, sometimes close to zero, at the open end. Pressure drop across the tapered filter was more uniform compared to that of the cylindrical filter. Hence, it should demonstrate better filter dirt removal. The authors have written a computer program that models the flow of the reverse pulse from the cleaning bar nozzle to the dirty side of the filter. It uses the iterative calculation mode and allows variables such as reverse pulse pressure and filter geometry to be changed. The calculations demonstrate fair agreement with the experimental results.

Keywords


gas filtration, ceramic filter, pulse cleaning, modelling, flow dynamics, tapered filter



References

  1. Baik,S. M.,Cheung, C. M. and Biffin,M.,Velocity Measurements in Ceramic Candle Filter Elements, First International Environmental Engineering Conference, 1993, Leicester, UK
  2. Berbner, S., Loffler,E, "Pulse Cleaning of Rigid Ceramic Filter Elements at High Temperatures" in "Gas Cleaning at High Temperature" R.Clift and J.P.K Seville (Eds.), BlackieAcademic & Professional, Glasgow, 1993, pp. 225-243.
  3. Biffin, M., Panagiotidis, P. and Pitsillides, C., "Velocity Measurements in a Ceramic Filter Element Undergoing Pulse Cleaning". Proceeding of the Institute of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, 1997, vol. 211, E1, pp.1l-16.
  4. Christ,A. and Renz, U, "NumericalSimulation of SingleCeramicFilterElementCleaning" in "High Temperature Gas Cleaning", Schmidt,E.,Gang,Pitt,Ditter(Eds.),lnstitut fUr MUM, Universitat Karlsruhe(TH), Karlsruhe,1996, pp.728-739.
  5. Chuah, T. G., Withers, C. J., Burbidge, A. S., Seville,J. P. K, "Numerical Modelling of Reverse Pulse Cleaning" in "High Temperature Gas Cleaning", A. Dittler,G. Hemmer, G. Kasper (Eds.), Institut fUr Mechanische Verfahrenstechnik und Mechanik der UniversitatKarlsruhe (TH), Karlsruhe, Glasgow, 1999, pp. 185-199.
  6. Chuah, T. G., Withers, C. J., Burbidge, A. S., Seville, J. P. K, Numerical Modelling of ReversePulseCleaningon CeramicFilters, Symposium of Chemical Engineering Malaysia, 2001, Johor Bahru, Malaysia.
  7. Hajek, St., Peukert, W., Experience with High Temperature Filter Media, PARTEC 95, Nurnberg, 1995, pp. 75-86.
  8. Ito,S., "Pulse Jet Cleaning and Internal Flowin a Large Ceramic Tube Filter", in "Gas Cleaning at High Temperatures", R.Clift and J.P.K.Seville(Eds.),BlackieAcademic & Professional, Glasgow, 1993, pp. 266- 279.
  9. Ito, S., Tanaka, T. and Kawamura, S., Changes in Pressure Loss and Face Velocity of CeramicCandle FiltersCaused byReverse Cleaning in Hot Coal Gas Filtration, Powder Technology, 1998, vol. 100, pp. 32-40.
  10. Kanaoka, C., Amomkitbamrung, Mand Kishima, T., "Cleaning Mechanism of Dust from Ceramic Filter Element" in "High TemperatureGas Cleaning", A. Dittler,A., Hemmer, G., Kasper,G. (Eds.),Institutfur Mechanische Verfahrenstechnik und Mechanik der Universitat Karlsruhe(TH), Karlsruhe, 1999, pp.142-152.
  11. Laux, S., Giernoth, B., Bulak, H., Renz, U., "Aspectsof Pulse-Jet Cleaning ofCeramic FilterElements" in "Gas Cleaning at High Temperatures" R.Clift and J.P.K. Seville (Eds.), BlackieAcademic & Professional, Glasgow, 1993, pp.203-224.
  12. Mai,R., Fronhofer,M. and Leibold,H., Recleaning of FilterCandlesby FastPressureDecrease on the Raw Gas Side, PARTEC 95, Numberg, 1995,pp. 301-310.
  13. Mai, R., Fronhofer, M. and Leibold, H., "Flow Charcteristics of Filter Candles During Recleaning" in "High Temperature Gas Cleaning", Schmidt, Gang, Pitt, Ditter (Eds.), Institut fUr MUM, Universitat Karlsruhe(TH), Karlsruhe, Germany, 1996, pp. 194-206.
  14. Perry, R.H., Green, D. W., 1984 "Perry's Chemical Engineers' Handbook", 6th edition McGraw Hill., New York,p. 5-22
  15. RothwellE., Pulse-DrivenInjectorsforFabricDust Filters: (Part 1) The Significance of Jet- Injector Interaction, Filtration & Separation, September/October 1991, pp. 341-350.
  16. Stephen, C.M., Grannell, S.K., Seville, J. P. K., "Conditioning and Pulse-Cleaning of Rigid Ceramic Filters", in "High Temperature Gas Cleaning", E. Schmidt, et a1. (Eds), Institut fUr Mechanische Verfahrenstechnik und Mechhanik der Universitat Karlsruhe (TH), Karlsruhe, 1996, pp. 207-218.



DOI: https://doi.org/10.22146/ajche.50807

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