한국안전학회지 (Journal of the Korean Society of Safety)

  • 제39권2호
  • /
  • Pages.38-43
  • /
  • 2024
  • /
  • 1738-3803(pISSN)
  • /
  • 2383-9953(eISSN)
한국안전학회 (The Korean Society of Safety)
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Acetylene Black의 분진폭발 특성 연구

Study on Dust Explosion Characteristics of Acetylene Black

  • 최재준 (세명대학학교 소방방재공학과) ;
  • 하동명 (세명대학교 보건안전학과)
  • Jae Jun Choi (Department of Fire Disaster Prevention Engineering Graduate School, Semyung University) ;
  • Dong Myeong Ha (Department of Occupational Health and Safety, Semyung University)
  • 투고 : 2023.12.26
  • 심사 : 2024.03.26
  • 발행 : 2024.04.30
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초록

Recently, with the expanding market for electronic devices and electric vehicles, secondary battery usage has been on the rise. Lithium-ion batteries are particularly popular due to their fast charging times and lightweight nature compared to other types of batteries. A secondary battery consists of four components: anode, cathode, electrolyte, and separator. Generally, the positive and negative electrode materials of secondary batteries are composed of an active material, a binder, and a conductive material. Acetylene Black (AB) is utilized to enhance conductivity between active material particles or metal dust collectors, preventing the binder from acting as an insulator. However, when recycling waste batteries that have been subject to high usage, there is a risk of fire and explosion accidents, as accurately identifying the characteristics of Acetylene Black dust proves to be challenging. In this study, the lower explosion limit for Acetylene Black dust with an average particle size of 0.042 ㎛ was determined to be 153.64 mg/L using a Hartmann-type dust explosion device. Notably, the dust did not explode at values below 168 mg, rendering the lower explosion limit calculation unfeasible. Analysis of explosion delay times with varying electrode gaps revealed the shortest delay time at 3 mm, with a noticeable increase in delay times for gaps of 4 mm or greater. The findings offer fundamental data for fire and explosion prevention measures in Acetylene Black waste recycling processes via a predictive model for lower explosion limits and ignition delay time.

키워드

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