DOI QR코드

DOI QR Code

A study on particle collection efficiency of a low power consumption two-stage electrostatic precipitator for oil mists collection

오일 미스트 포집을 위한 저전력 소비형 2단 전기집진기의 집진효율에 대한 연구

  • Received : 2014.08.05
  • Accepted : 2014.09.12
  • Published : 2014.09.30

Abstract

A two-stage electrostatic precipitator (ESP) using a carbon brush charger and a plate-plate parallel aluminum collector was developed and its application for removal of oil mist aerosols was investigated. Charge number per particle and particle collection efficiency at different applied voltage to the carbon brush charger were measured and compared to those obtained by theoretical calculations. A long-term operation of the ESP during 9 weeks was also performed to evaluate its performance durability for oil mists. Average charge number per mist particle increased with the applied voltage to the charger, and thus the collection efficiency of the mist particles also increased overall at the particle size range of 0.26 - 3 mm. The tendencies of the average charge number per particle and particle collection efficiency obtained from theoretical calculations were considerably consistent with those of the experimental results. Particle collection efficiency of ~99 % at 0.3 mm could be achieved by power consumption of only 0.0033 W/($m^3/h$) at the face velocity of 1 m/s and its collection performance maintained stably during every 8 hr operation per day for 9 weeks with little increase of pressure drop.

본 연구에서는 마이크로 탄소 브러쉬 하전부와 평판형 금속 집진부로 구성된 저전력 소비형 2단형 전기집진기를 개발하였고, 특히 인체 위해성이 높은 $0.3{\mu}m$급의 미세한 오일 미스트에 대한 인가전압 및 소비전력별 집진효율 특성을 실험연구를 통해 고찰하였다. 하전부의 인가전압에 따른 단위 입자당 하전율과 입경별 집진효율을 측정함과 동시에 이론에 근거한 계산값과 비교해 보았으며, 9 주 동안의 장시간 운전을 통해 지속적으로 포집된 오일 미스트에 의한 전기집진기의 성능을 열유체역학적인 관점에서 변화를 조사하였다.

Keywords

References

  1. A. Ronneberg and K. Skyberg, "Mortality and incidence of cancer among oil exposed workers in a Norwegian cable manufacturing company Part I Exposure conditions 1920-79", British Journal of Industrial Medicine, vol. 45, no. 9, pp. 589-594, 1998.
  2. J. Thornburg and D. Leith, "Mist generation during metal machining," Transactions of the ASME, vol. 122, pp. 544-549, 2000.
  3. J. M. Yacher, W. A. Heitbrink, and E. G. Burroughs, "Mist control at machining center, Part 2: Mist control following installation of air cleaners", Journal of the American Industrial Hygiene Association, vol. 61, pp. 282-89, 2000. https://doi.org/10.1080/15298660008984538
  4. W. A. Heitbrink, D. E. Evans, T. M. Peters, and T. J. Slavin, "Characterization and mapping of very fine particles in an engine machining and assembly facility", Journal of Occupational and Environmental Hygiene, vol. 4, pp. 341-351, 2007. https://doi.org/10.1080/15459620701290081
  5. M. P. Fraser, Z. W. Yue, and B. Buzcu, "Source apportionment of fine particulate matter in Houston, TX, using organic molecular markers", Atmospheric Environment, vol. 37, pp. 2117-123, 2003. https://doi.org/10.1016/S1352-2310(03)00075-X
  6. J. B. Lee, K. H. Kim, H. J. Kim, S. J. Cho, K. Jung, and S. D. Kim, "Emission rate of particulate matter and Its removal efficiency by precipitators in under-fired charbroiling restaurants", Journal of the Scientific World, vol. 11, pp. 1077-1088, 2011. https://doi.org/10.1100/tsw.2011.103
  7. M. Boundy, D. Leith, D. Hands, M. Gressel, and G. E Burroughs, "Performance of industrial mist collectors over time", Applied Occupational and Environmental Hygiene, vol. 15, pp. 928-935, 2000. https://doi.org/10.1080/104732200750051166
  8. D. Leith, J. Volckens, M. G. Boundy, and D. Hands, "Control methods for mineral oil mists", Applied Occupational and Environmental Hygiene, vol. 18, pp. 883-889, 2003. https://doi.org/10.1080/10473220390237412
  9. G. M. Letts, P. C. Raynor, and R. L. Schumann, "Selecting brush materials to improve mist filters", Aerosol Science, vol. 34, pp. 1481-1492, 2003. https://doi.org/10.1016/S0021-8502(03)00102-2
  10. J. B. Lee, K. H. Kim, H. J. Kim, S. J. Cho, K. Jung, and S. D. Kim, "Emission rate of particulate matter and Its removal efficiency by precipitators in under-fired charbroiling restaurants", Journal of the Scientific World, vol. 11, pp. 1077-1088, 2011. https://doi.org/10.1100/tsw.2011.103
  11. Y. S. Hwang, H. J. Park, G. H. Chung, D. H. Kim, and B. K. Na, "Odor removal of discharge gas from tenter facility in textile industry using pilot-scale EFC (Electric Fume Collector)", Korean Journal of Odor Research and Engineering, vol. 10, pp. 136-141, 2011.
  12. C. S. Yi, H. J. Shin, and C. W. Lee, "A study on dust collection efficiency of axial-vane type cyclone for oil mist", Journal of the Korean Society of Manufacturing Technology Engineers, vol. 21, pp. 415-420, 2012. https://doi.org/10.7735/ksmte.2012.21.3.415
  13. H. J. Kim, B. Han, Y. J. Kim, S. J. Yoab, and T. Oda, "Integration of a nonmetallic electrostatic precipitator and a wet scrubber for improved removal of particles and corrosive gas cleaning in semiconductor manufacturing industries", Journal of the Air & Waste Management Association, vol. 62, pp. 905-915, 2012. https://doi.org/10.1080/10962247.2012.686893
  14. R. Cochet, "Lois charge des fines particules (submicroniques) etudes theoriques-controles recents spectre de particules", Colloque International La Physique Des Forces Electrostatiques Et Leurs Application, vol. 102, pp. 331-338, 1961.
  15. SPS-KACA002-132, "Indoor air cleaner", Korea Air Cleaning Association Standard (KACAS), 2006.
  16. W. C. Hinds, Aerosol Technology: Properties, Behavior, and Measurement of Airborne Particle, 2nd ed. Wiley, New York, 1999.
  17. R. C. Flagan and J.H. Seinfeld, Fundamentals of Air Pollution Engineering, Prentice-Hall, Inc., Englewood Cliffs, New Jersey, 1988.
  18. L. K. Wang, N. C. Pereira, and Y. T. Hung, Air Pollution Control Engineering, Humana Press, Totowa, NJ, 2004.
  19. W. A. Heitbrink, D. E. Evans, T. M. Peters, and T. J. Slavin, "Characterization and mapping of very fine particles in an engine machining and assembly facility", Journal of Occupational and Environmental Hygiene, vol. 4, no. 5, pp. 341-351, 2007. https://doi.org/10.1080/15459620701290081