Nuclear Engineering and Technology

  • 제52권10호
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  • Pages.2230-2237
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  • 2020
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Experimental investigation of aerosols removal efficiency through self-priming venturi scrubber

  • 투고 : 2019.05.08
  • 심사 : 2020.03.18
  • 발행 : 2020.10.25
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초록

Self-priming venturi scrubber is one of the most effective devices used to collect aerosols and soluble gas pollutants from gaseous stream during severe accident in a nuclear power plant. The present study focuses on investigation of dust particle removal efficiency of the venturi scrubber both experimentally and theoretically. Venturi scrubber captures the dust particles in tiny water droplets flowing into it. Inertial impaction is the main mechanism of particles collection in venturi scrubber. The water injected into venturi throat is in the form of jets through multiple holes present at venturi throat. In this study, aerosols removal efficiency of self-priming venturi scrubber was experimentally measured for different operating conditions. Alumina (Al2O3) particles with 0.4-㎛ diameter and 3950 kg/㎥ density were treated as aerosols. Removal efficiency was calculated for different gas flow rates i.e. 3-6 ㎥/h and liquid flow rates i.e. 0.009-0.025 ㎥/h. Experimental results depict that aerosols removal efficiency increases with the increase in throat velocity and liquid head. While at lower air flow rate of 3 ㎥/h, removal efficiency decreases with the increase in liquid head. A theoretical model of venturi scrubber was also employed and experimental results were compared with mathematical model. Experimental results are found to be in good agreement with theoretical results.

키워드

참고문헌

  1. D.A. Powers, M.T. Leonard, R.O. Gauntt, R.Y. Lee, M. Salay, in: Accident Source Terms for Light-Water Nuclear Power Plants Using High-Burnup or MVND2011-0128, Sandia National Laboratories, Albuquerque, NM, 2011.
  2. R.O. Schlueter, R.P. Schmitz, Filtered vented containments, Nucl. Eng. Des. 120 (1) (1990) 93-103. https://doi.org/10.1016/0029-5493(90)90288-9
  3. D. Jacquemain, S. Guentay, S. Basu, M. Sonnenkalb, L. Lebel, J. Ball, H.J. Allelein, Liebana Martinez, B. Eckardt, N. Losch, OECD/NEA/CSNI Status Report on Filtered Containment Venting, Organisation for Economic Co-Operation and Development, 2014.
  4. T. Mi, X.M. Yu, "Dust removal and desulphurization in a novel venturi scrubber." Chemical Engineering and Processing: Process Intensification 62 (2012) 159-167, https://doi.org/10.1016/j.cep.2012.07.010.
  5. H. Rust, Ch T€annler, W. Heintz, D. Haschke, M. Nuala, R. Jakab, Pressure release of containments during severe accidents in Switzerland, Nucl. Eng. Des. 157 (3) (1995) 337-352. https://doi.org/10.1016/0029-5493(95)01015-A
  6. C.H. Jung, K.W. Lee, Filtration of fine particles by multiple liquid droplet and gas bubble systems, Aerosol. Sci. Technol. 29 (5) (1998) 389-401. https://doi.org/10.1080/02786829808965578
  7. Majid Ali, Changqi Yan, Zhongning Sun, Haifeng Gu, Khurram Mehboob, Dust particle removal efficiency of a venturi scrubber, Ann. Nucl. Energy 54 (2013a) 178-183. https://doi.org/10.1016/j.anucene.2012.11.005
  8. M. Lehner, Aerosol separation efficiency of a venturi scrubber working in selfpriming mode, Aerosol. Sci. Technol. 28 (5) (1998) 389-402. https://doi.org/10.1080/02786829808965533
  9. M. Lehner, F. Mayinger, Operating results and aerosol deposition of a venturi scrubber in self-priming operation, Chem. Eng. Process: Process Intensification 3 (34) (1995) 283-288. https://doi.org/10.1016/0255-2701(94)04015-X
  10. W.H. Walton, A. Woolcock, E.G. Richardson, Aerodynamic Capture of Particles, Pergamon Press, Oxford, 1960.
  11. Seymour Calvert, Lundgren Dale, Dilip S. Mehta, Venturi scrubber performance, J. Air Pollut. Contr. Assoc. 22 (7) (1972) 529-532. https://doi.org/10.1080/00022470.1972.10469674
  12. Shui-Chow Yung, Seymour Calvert, Harry F. Barbarika, Venturi scrubber performance model, Environ. Sci. Technol. 12 (4) (1978) 456-459. https://doi.org/10.1021/es60140a009
  13. Richard H. Boll, Particle collection and pressure drop in venturi scrubbers, Ind. Eng. Chem. Fundam. 12 (1) (1973) 40-50. https://doi.org/10.1021/i160045a008
  14. P.O. Nilsson, FILTRA-MVSS (multi venturi scrubber system), presentation to U.S, 2012. NRC page 26.
  15. R.H. Boll, L.R. Fiais, P.W. Maurer, W.L. Thompson, Mean drop size in a full scale Venturi scrubber via transmissometer, Air Pollut. Control Assoc. 24 (1974) 934-938. https://doi.org/10.1080/00022470.1974.10469991
  16. D. Leith, W. Licht, The collection efficiency of cyclone type particlecollectorsd-a new theoretical approach, AIChE Symp. Ser. Air Pollut. Control. 68 (1996) 196-206.
  17. Kenneth GT. Hollands, Kailash C. Goel, A general method for predicting pressure loss in venturi scrubbers, Ind. Eng. Chem. Fundam. 14 (1) (1975) 16-22. https://doi.org/10.1021/i160053a003
  18. Dean R. Dickinson, W.R. Marshall Jr., The rates of evaporation of sprays, AIChE J. 14 (4) (1968) 541-552. https://doi.org/10.1002/aic.690140404
  19. A. Mohebbi, M. Taheri, J. Fathikaljahi, M.R. Talaie, Simulation of an orifice scrubber performance based on Eulerian/Lagrangian method, J. Hazard Mater. 100 (1-3) (2003) 13-25. https://doi.org/10.1016/S0304-3894(03)00066-9
  20. Noel de Nevers, Air Pollution Control Engineering, McGraw Hill, New York, 2000.
  21. Majid Ali, Changqi Yan, Zhongning Sun, Jianjun Wang, Haifeng Gu, CFD simulation of dust particle removal efficiency of a venturi scrubber in CFX, Nucl. Eng. Des. 256 (2013b) 169-177. https://doi.org/10.1016/j.nucengdes.2012.12.013

피인용 문헌

  1. Removal of Cement Dust Particulates via Fully Submerged Self‐Primed Venturi Scrubber vol.49, pp.5, 2020, https://doi.org/10.1002/clen.202000241