Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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A Study on the Oxygen Consumption Rate and Explosion Energy of Combustible Wood Dust in Confined System - Part I: Quantification of Explosion Energy and Explosive Efficiency

밀폐계 가연성 목재분진의 폭발에너지와 산소소모율에 관한 연구 - Part I: 폭발에너지의 정량화 및 폭발효율

  • Kim, Yun Seok (Safety Engineering, Incheon National University) ;
  • Lee, Min Chul (Safety Engineering, Incheon National University) ;
  • Lee, Keun Won (Chemical Hazard Research Team, Chemical Safety & Health Research Center, Occupational Safety and Health Research Institute) ;
  • Rie, Dong Ho (Fire Disaster Prevention Research Center, Incheon National University)
  • 김윤석 (인천대학교 안전공학과) ;
  • 이민철 (인천대학교 안전공학과) ;
  • 이근원 (한국산업안전보건공단 산업안전보건연구원 화학물질안전보건센터) ;
  • 이동호 (인천대학교 소방방재연구센터)
  • Received : 2016.04.06
  • Accepted : 2016.08.08
  • Published : 2016.08.31
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Abstract

A dust explosion is a phenomenon of strong blast wave propagation involving destruction which results from dust pyrolysis and rapid oxidation in a confined space. There has been some research done to find individual explosion characteristics and common physical laws for various dust types. However, there has been insufficient number of studies related to the heat of combustion of materials and the oxygen consumption energy about materials in respect of dust explosion characteristics. The present study focuses on the relationship between dust explosion characteristics of wood dust samples and oxygen consumption energy. Since it is difficult to estimate the weight of suspended dust participating in explosions in dust explosion and mixtures are in fuel-rich conditions concentrations with equivalent ratios exceeding 1, methods for estimating explosion overpressure by applying oxygen consumption energy based on unit volume air at standard atmospheric pressure and temperature are proposed. In this study an oxygen consumption energy model for dust explosion is developed, and by applying this model to TNT equivalent model, initial explosion efficiency was calculated by comparing the results of standardized dust explosion experiments.

Keywords

References

  1. EN14034-1, "Determination of Explosion Characteristics of Dust Clouds -Part1: Determination of the Maximum Explosion Pressure Pmax of Dust Clouds", European Committee for Standardization, British Standards, CEN, 2004.
  2. EN14034-2, "Determination of Explosion Characteristics of Dust Clouds -Part2: Determination of the Maximum Rate of Explosion Pressure Rise $(dP/dt)_{max}$ of Dust Clouds", European Committee for Standardization, British Standards, CEN, 2004.
  3. EN14034-3, "Determination of Explosion Characteristics of Dust Clouds -Part3: Determination of the Lower Explosion Limit LEL of Dust Clouds", European Committee for Standardization, British Standards, CEN, 2004.
  4. EN 13821, "Potentially Explosive Atmospheres Explosion Prevention and Protection Determination of Minimum Ignition Energy of Dust/Air Mixtures", European Committee for Standardization, British Standards, CEN, 2004.
  5. R. K. Eckhoff, "Dust Explosions in the Process Industries(3rd ed.)", Gulf Professional Publishing/Elsevier Boston, USA, PP.5-7, 2003.
  6. R. K. Eckhoff, "Partial Inerting -An Additional Degree of Freedom in Dust Explosion Protection", Journal of Loss Prevention in the Process Industries 17, pp.187-193, 2004. https://doi.org/10.1016/j.jlp.2003.11.004
  7. W. Wiemann, "Einfluss der Temperatur auf Explosionskenngrossen und Sauerstoffgrenz- konzentrationen", VDI-Berichte, Vol. 494, pp. 89-97, Springer VDI-Verlag GmbH, Dusseldorf, Germany, 1984.
  8. W. Wiemann, "Influence of Temperature and Pressure on the Explosion Characteristics of Dust/Air and Dust/Air/Inert Gas Mixtures", In K. L. Cashdollar & M. Hertzberg (Eds.), "Industrial Dust Explosions" pp.33-44. ASTM Special Technical Publication, Vol. 958. Philadelphia, USA, 1987.
  9. W. Wiemann, "Untersuchung des Explosion -sverhaltens von Methan und Kohlenstaub bei hohen Temperaturen unter vermindertem Sauerstoffgehalt" , Final report project No. 321000, Westfahlische Berggewerkschaftskasse, Bergbau-Versuchsstrecke, Institut fur Explosion-sschutz und Sprengtechnik, Beylingstrasse 65, 4600 Dortmund Derne, Germany, 1987.
  10. C. D. Walther, and H. Schacke, "Evaluation of Dust Explosion Characteristics at Reduced and Elevated Initial Pressures" (poster summary), Bayer AG, Leverkusen, F. R. Germany, 1986.
  11. M. Hertzberg, Cashdollar, K. L. "Introduction to Dust Explosions", In K. L. Cashdollar, & M. Hertzberg (Eds.), "Industrial Dust Explosions", ASTM Special Technical Publication, Philadelphia, USA, Vol.958, pp.5-32, 1987.
  12. M. Mital, "Limiting Oxygen Concentration for Coal Dusts for Explosion Hazard Analysis and Safety", Journal of Loss Prevention in the Process Industries 26, pp.1106-1112, 2013. https://doi.org/10.1016/j.jlp.2013.04.012
  13. J. G. Torrenta, E. C. Lazaro, C. Wilen and A. Rautalin, "Biomass Dust Explosibility at Elevated Initial Pressures", Fuel, Vol. 77, No. 9/10, pp. 1093-1097, 1998. https://doi.org/10.1016/S0016-2361(97)00285-8
  14. Y. S. Kim and D. H. Rie, "A Study on the Explosion Risk Assessment of Combustible Dust Using the Cone Calorimeter", Proceedings of the International Symposium, Asia Pacific Association of Safety Engineering Societies, pp.44-49, 2011.
  15. Y. S. Kim, S. H. Lee, K. W. Lee and D. H. Rie, "A Study on Pyrolysis Characteristics of Dust Explosion about Coumbustible Wood Dust", Proceedings of Fall Conference, Korean Institute of Fire Science & Engineering, pp. 70-73, 2012.
  16. Y. S. Kim, S. H. Lee, K. W. Lee, and D. H. Rie, "A Study on the Correlation about Oxygen Consumption and Explosion Energy of Coumbustible Wood Dust in Confined System", Proceedings of Spring Conference of the Korean Society of Safety, pp. 97, 2013.
  17. Y. S. Kim, S. H. Lee, K. W. Lee, and D. H. Rie, "Research on the Dust Explosion Characteristics Attributable to Pyrolysis Rate and Maximum Oxygen Consumption Rate for Flammable Dust", Proceedings of Fall Conference of the Korean Society of Safety, pp. 19, 2014.
  18. Y. S. Kim, K. H. Shim, K. W. Lee, and D. H. Rie, "Research on the Prediction about the Behavior of Combustible Wood Dust Explosion by using the Thermo Gravimetric Analysis", Proceedings of Spring Conference of the Korean Society of Safety, pp. 166, 2015.
  19. Y. S. Kim, "A Study on the Explosion Efficiency And Risk Assessment of Combustible Wood Dust by Using the Cone Calorimeter", Master's Thesis of INU, Incheon, Kr, 2012
  20. K. W. Lee, S. H. Lee, O. S. Han, "Hazard Assessment of Explosion in Suspended Dust of Wood", Journal of Korean Institute of Gas, Vol. 17, No.5, pp 81-86, 2013. https://doi.org/10.7842/kigas.2013.17.5.81
  21. KS E 1SO 1928, "Solid Mineral Fuels Determination of gross Calorific Value by the Bomb Calorimetric Method and Calculation of Net Calorific Value", Korean Agency for Technology and Standards: KSA, 2015.
  22. KS F ISO 5660-1,"Reaction-to-fire Tests - Heat Release, Smoke Production and Mass Loss Rate - Part 1: Heat Release Rate (Cone Calorimeter Method)", Korean Agency for Technology and Standards: KSA, 2008.
  23. KS L 5110, "Testing Methods for Specific Gravity of Hydraulic Cement", Korean Agency for Technology and Standards: KSA, 2001.
  24. KS D ISO 3923-1, "Metallic Powders Determination of Apparent Density - Part 1: Funnel Method", Korean Agency for Technology and Standards: KSA, 2009.
  25. ISO 3130, "Wood-determation of Moisture Content for Physical and Mechanical Tests", ISO, 1975.
  26. R. K. Eckhoff, "Dust explosions in the process industries.(3rd ed.)", Gulf Professional Publishing/Elsevier Boston, USA, PP.525-533, 2003.
  27. NF T 20-036, "Chemical Products for Industrial use Determination of the Relative Temperature of the Spontaneous Flammability of Solids", Association Francaise de Normalisation, NF, 1985.
  28. R. Siwek, C. Cesana, "Ignition Behavior of Dusts: Meaning and Interpretation", Journal of Process Safety Progress, vol 4, pp. 107-119, 1995.
  29. D. A. Crowl, J. F. Louvar, "Chemical Process Safety Fundamentals with Applications", Third Edition, pp. 281-286, Pearson, Boston, USA , 2011.
  30. W. E. Baker, "Explosion in Air", University of Texas Press, Austin, USA (1973)
  31. "The Effects of Nuclear Weapons" US Atomic Energy Commission, Washington DC, USA, 1962.
  32. V. J. Clancey, "Diagnostic Features of Explosion Damage", Paper Presented at the Sixth International Meeting of Forensic Science, 1972.