한국양식학회지 (Journal of Aquaculture)

한국양식학회 (The Korean Society of Fisheries and Aquatic Science)
권호 표지

Design for a Low-Pressure Hydrocyclone with Application for Fecal Solid Removal Using Polystyrene Particles

  • Lee, Jin-Hwan (Department of Aquaculture, Pukyong National University) ;
  • Jo, Jae-Yoon (Department of Aquaculture, Pukyong National University)
  • 발행 : 2005.08.25
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초록

The separation performances for thirty different dimensions of a low-pressure hydrocyclone (LPH) were tested in order to obtain an optimum dimension scale for fecal solid removal from an aquaculture system. The geometric variables were considered on two inlet diameters (Di: 30 and 50 mm), five overflow diameters (Do: 30, 50, 60, 70 and 100 mm), and three cylinder lengths (Lc: 250, 345 and 442 mm), while the cylinder diameter (Dc) of 335 mm, underflow diameter (Du) of 50 mm and cone angle (${\theta}$) of $68^{\circ}$ were kept constant. A small size for carp feces was regarded as the target for the removal of solids. Spherical polystyrene particles (1.1-1.3 mm dia., ${\rho}_s=1.05g/cm^3$), which demonstrate a similar settling velocity and specific gravity to the carp feces, were used as feed. The separation performance was tested in the range of 330 to 1200 ml/s of the inflow rate. Experimental results using ANCOVA and the Tukey test (${\alpha}=0.05$) demonstrated that the separation performances of LPH were significantly affected (P<0.05) by fi, Di and Do. In contrast, there was no significant Lc effect (P>0.05) on the separation performances. The maximum separation performance was detected at dimension combinations of 30 mm of inflow diameter (Di), 50, 60 and 70 mm of overflow diameter (Do), 345 mm of cylinder length (Lc). The dimension proportions were 0.09, 1.03, 0.15-0.21 and 0.15 (or Di/Dc, Lc/Dc, Do/Dc and Du/Dc, respectively.

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참고문헌

  1. Antunes, M. and R. A. Medronho, 1992. Bradley hydrocyclones: Design and perfonnance analysis. (in) L. Svarovsky and M. T. Thew (ed.), Hydrocyclones: Analysis and Applications, Kluwer Academic Publishers, London, pp. 3-13
  2. Asomah, A K. and T. J. Napier-Munn, 1997. An empirical model of hydrocyclones, incorporating angle of cyclone inclination. Miner. Eng., 10, 339-347 https://doi.org/10.1016/S0892-6875(97)00008-3
  3. Castilho, L. R. and R. A Medronho, 2000. A simple procedure for design and performance prediction of Bradley and Rietema hydrocyclones. Miner. Eng., 13, 183-191 https://doi.org/10.1016/S0892-6875(99)00164-8
  4. Chen, W, N. Zydek and F. Parma, 2000. Evaluation of hydrocyclone models for practical applications. Chem. Eng. J., 80, 295-303. https://doi.org/10.1016/S1383-5866(00)00105-2
  5. Chu, L.-Y., W-M. Chen and X.-Z. Lee, 2000. Effect of structural modification on hydrocyclone performance. Separation and purification Technology, 21, 71-86 https://doi.org/10.1016/S1383-5866(00)00192-1
  6. Chu, L.-Y., W-M. Chen and X.-Z. Lee, 2002a. Enhancement of hydrocyclone performance by controlling the inside turbulence structure. Chem. Eng. Sci., 57, 207-212. https://doi.org/10.1016/S0009-2509(01)00364-5
  7. Chu, L.-Y., W-M. Chen and X.-Z. Lee, 2002b. Effects of geometric and operating parameters and feed characters on the motion of solid particles in hydrocyclones. Separation and Purification Technology, 26, 237-246 https://doi.org/10.1016/S1383-5866(01)00171-X
  8. Coelho, M. A. Z. and R. A. Medronho, 1992. An evaluation ofthe Plitt and Lynch & RAO models for the hydrocyclones. (in) L. Svarovsky and M. T. Thew (ed.), Hydrocyclones: Analysis and Applications, Kluwer Academic Publishers, London, pp. 63-72
  9. Coelho, M. A .Z. and R. A Medronho, 2001. A model for performance prediction of hydrocyclones. Chem. Eng. J., 84, 714.
  10. Dai, G Q., J. M. Li and W M. Chen, 1999b. Numerical prediction of the liquid flow within a hydrocyclone. Chem. Eng. J., 74, 217-223 https://doi.org/10.1016/S1385-8947(99)00044-3
  11. Dai, G Q., W M. Chen, J. M. Li and L. Y. Chu, 1999a. Experimental study of solid-liquid two-phase flow in a hydrocyclone. Chem. Eng. J., 74, 211-216. https://doi.org/10.1016/S1385-8947(99)00043-1
  12. Deventer, J. S., J. Van, D. Feng, K. R. P. Petersen and C. Aldrich, 2003. Modeling of hydrocyclone performance based on spray profile analysis. Int. J. Miner. Process., 70, 183-203 https://doi.org/10.1016/S0301-7516(03)00002-4
  13. Dyakowski, T and R. A Williams, 1995. Prediction of air-core size and shape in a hydrocyclone. Int. J. Miner. Process., 43, 1-14 https://doi.org/10.1016/0301-7516(95)00002-U
  14. Firth, B., 2003. Hydrocyclones in dewatering circuits. Miner. Eng., 16, 115-120 https://doi.org/10.1016/S0892-6875(02)00209-1
  15. Flinthoff, B. C., L. R. Plitt and A A Turak, 1987. Cyclone modeling: a review of present technology, CIM Bull., 80, 39-50
  16. Frachon, M. and J. J. Cilliers, 1999. A general model for hydrocyclone partition curves. Chem. Eng. J., 73, 53-59. https://doi.org/10.1016/S1385-8947(99)00040-6
  17. Gupta, A K., D. G Lilley and N. Syred, 1984. Swirl Flow. Abacus Press, Cambridge, Wells, England, pp. 187-198
  18. Hou, R., A. Hunt and R. A Williams, 1998. Acoustic monitoring of hydrocyclone performance. Miner. Eng., 11, 1047-1059 https://doi.org/10.1016/S0892-6875(98)00092-2
  19. Kim, I.-B. and 1.-Y. Jo, 1998. Recirculating aquaculture systems in Korea-development of an environmentally friendly aquaculture system, Intensive Bio-Production Korea (IBK) system. (in) Proceedings ofthe 2nd International Conference on Recirculating Aquaculture, Virginia, USA, pp. 139-146
  20. Lee, J., 2004. Design and performance of low-pressure hydrocyclone for solids removal in a recirculating aquaculture system. Ph. D. thesis, Pukyong National University, Pusan, Korea, pp. 16-89
  21. Medronho, R. A and L. Svarovsky, 1984. Tests to verifY hydrocyclone scale-up procedure. (in) Proceedings of the 2nd International Conference on Hydrocyclones, BHRA, Bath,UK, pp. 1-14
  22. Nageswararao, K., 1999a. Normalization of the efficiency curves of hydrocyclone classifiers. Miner. Eng., 12, 107-118 https://doi.org/10.1016/S0892-6875(98)00123-X
  23. Nageswararao, K., 1999b. Reduced efficiency curves of industrial hydrocyclone-An analysis for plant practice. Miner. Eng., 12, 517-544 https://doi.org/10.1016/S0892-6875(99)00034-5
  24. Nowakowski, A F., W Kraipech, R. A Williams and T. Dyakowski, 2000. The hydrodynamics of a hydrocyclone based on a three-dimensional multi-continuum model. Chem. Eng. J., 80, 275-282. https://doi.org/10.1016/S1383-5866(00)00102-7
  25. Petty, C. A. and S. M. Parks, 2001. Flow predictions within hydrocyclones. Filteration and Separation, 38, 28-34
  26. Romero, J. and R. Sampaio, 1999. A numerical model for prediction of the air-core shape of hydrocyclone flow. Mechanics Research Communications, 26, 379-384 https://doi.org/10.1016/S0093-6413(99)00037-3
  27. Rovinsky, L. A., 1995. Application of separation theory to hydrocyclone design. J. Food Eng., 26, 131-146 https://doi.org/10.1016/0260-8774(94)00019-6
  28. Rushton, A, A S. Ward and R. G Holdich, 1996. Solid-liquid filtration and separation technology, VCH Publishers, Inc., New York, pp. 17-47
  29. Statie, E. C., M. E Salcudean and L. S. Gartshore, 2001. The influence of hydrocyclone geometry on separation and fibre classification. Filteration and Separation, 38, 36-41
  30. Summerfelt, S. T. and M. B. Timmons, 2000. Hydrodynamics in the 'Cornell-Type' dual-drain tank. (in) Proceedings of the 3rd International Conference on Recirculating Aquaculture, Virginia, USA, pp. 160-166
  31. Wheaton, F. W., 1977. Aquacultural Engineering. John Wiley and Sons, New York, Chichester, 519 pp
  32. Yuan, H., 1992. A cylinderical hydrocyclone. (in) L.. Svarovsky and M. T. Thew (ed.), Hydrocyclones: Analysis and Applications, Kluwer Academic Publishers, London, pp. 177-189