Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

Condensational Growth of Fine Aerosol Particles to Increase Precipitation Efficiency

집진효율 향상을 위한 미세 에어로졸 입자의 응축에 의한 성장 연구

  • 한상우 (연세대학교 대학원 기계공학과) ;
  • 황정호 (연세대학교 기계공학과)
  • Published : 2000.08.01
Download PDF
⟨ Previous Next ⟩

Abstract

As the environmental problems grow, the regulation of the pollutants emitted from power plants increases. Most of the pollutants in particle phase are removed by particle removal facilities, but fine particles between 0.1 micron and I micron in diameter have a low removal efficiency compared to particles in other size ranges. Therefore the present concern has concentrated on the removal of those fine particles. The purpose of this study is to grow fine particles by condensation to the range larger than I micron. Theoretically the general dynamic equation is solved with an assumption that the particle size follows a log-normal distribution to calculate the temporal behavior of the size distribution. Experiments have been carried out to compare the results with the theoretical predictions. Particles grown by condensation are sampled by impactors and observed with SEM photographs.

Keywords

References

  1. Bulang, S., 1994, 'Ten Years Experience of successful Operation of Mist Eliminator Systems in FGD Plants,' ASME Joint Int. Power Gen. Conf., Phoenix, Az, Oct
  2. Sun, J., Liu, B. Y. H., McMurry, P. H. and Greenwood, S., 1994, 'A Method to Increase Control Efficiencies of Wet Scrubbers for Submicron Particles and Particulate Metals,' Air & Waste, Vol. 44, pp. 184-185
  3. Lancaster, B. W. and Strauss, W., 1971, 'A Study of Steam Injection into Wet Scrubbers,' Ind. Eng. Chem. Fundam. Vol. 10, pp. 362-369 https://doi.org/10.1021/i160039a004
  4. Yoshida, T., Kousaka, Y., Okuyama, K. and Nomura, F., 1978, 'Application of Particle Enlargement by Condensation to Industrial Dust Collection,' J. Chem. Eng. Japan, Vol. 11, pp. 469-475
  5. Heidenreich, S. and Ebert, F., 1995, 'Condensational Droplet Growth as a Preconditioning Technique for the Separation of Submicron Particles from Gases,' Chem. Eng. Processing, Vol. 34, pp. 235 - 244 https://doi.org/10.1016/0255-2701(94)04009-5
  6. Heidenreich, S., 1994, 'Condensational Droplet Growth in the Continuum Regime-A Critical Review for the System Air-Water,' J. Aerosol Sci., Vol. 25, pp. 49-59 https://doi.org/10.1016/0021-8502(94)90181-3
  7. Vesala, T., Kulmala, M., Rudolf, R., Vrtala, A. and Wagner, P. E., 1997, 'Models for Condensational Growth and Evaporation of Binary Aerosol Particles,' J. Aerosol Sci., Vol. 28, pp. 565-598 https://doi.org/10.1016/S0021-8502(96)00461-2
  8. Kulmala, M., 1993, 'Condensational Growth and Evaporation in the Transition Regime: An Analytical Expression,' Aerosol Sci. Technol., Vol. 19, pp. 381-388
  9. Loyalka, S. K. and Park, J. W., 1988, 'Aerosol Growth by Condensation: A Generalization of Mason's Formula,' J. Colloid Interface Sci., Vol. 125, pp. 712-716 https://doi.org/10.1016/0021-9797(88)90038-0
  10. Gelbard, F., 1990, 'Modeling Multicomponent Aerosol Particle Growth by Vapor Condensation,' Aerosol Sci. Technol., Vol. 12, pp. 399-412
  11. Park, S. H. and Lee, K. W., 1999, 'Analytical Solutions to Condensational Growth of Polydisperse Aerosol for the Entire Particle Size Range,' J. Colloid Interface Sci., Vol. 125, pp. 712-716 https://doi.org/10.1016/0021-9797(88)90038-0
  12. Reist, P. C., 1993, Aerosol Science and Technology, McGraw-Hill, New York
  13. Hinds, W., 1982, Aerosol Technology, Wiley, New York
  14. 유주현, 황정호, 1997, '폐기물 소각기 생성되는 유해 중금속 물질과 연소실내 비산재와의 응축, 응집현상에 관한 연구,' 대한기계학회논문집(B) 제21권, 제2호, pp. 264-274
  15. 안강호, 배귀남, 1994, '새로 개발한 분무 입자 발생기의 성능평가,' 대한기계학회 춘계학술대회논문집(II), pp. 381-384
  16. 한상우, 2000, '집진 효율 향상을 위한 미세에어로졸입자의 응축에 의한 성장 연구,' 연세대학교 석사학위 논문