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http://dx.doi.org/10.9713/kcer.2017.55.1.40

Dust Explosion Characteristics of Multi-Walled Carbon Nano Tube  

Han, In Soo (Occupational Safety & Health Research Institute, KOSHA)
Lee, Keun Won (Occupational Safety & Health Research Institute, KOSHA)
Choi, Yi Rac (Occupational Safety & Health Research Institute, KOSHA)
Publication Information
Korean Chemical Engineering Research / v.55, no.1, 2017 , pp. 40-47 More about this Journal
Abstract
Dust explosion hazards are always present when combustible dusts are manufactured or handled in the process. However, industries is experiencing difficulty in establishing chemical accident prevention measures because of insufficiency of information on dust explosion characteristics of combustible dust handled in industry. In this study, we investigated experimentally dust explosion characteristics of two kinds of multi-walled carbon nano tubes (MWCNT) different in particle size distribution and examined classification of dust explosion hazardous area for MWCNT manufacturing or handling process by applying the NFPA 499 code. As a result, $P_{max}$, $K_{st}$, LEL, MIE and MIT of MWCNT 1 having $124.2{\mu}m$ median diameter are obtained 6.3 bar, $56bar{\cdot}m/s$, $125g/m^3$, over 1000 mJ, and over $650^{\circ}C$. $P_{max}$, $K_{st}$, LEL, MIE and MIT of MWCNT 2 having $293.5{\mu}m$ median diameter are 6.2 bar, $42bar{\cdot}m/s$, $100g/m^3$, over 1000 mJ, and over $650^{\circ}C$, respectively. MWCNT 1, 2 are not categorized as combustible dust listed in the NFPA 499 Code for classification of dust explosion hazardous area because explosion severity and ignition sensitivity of MWCNT 1, 2 are below 0.35 and 0.01, respectively.
Keywords
MWCNT; Dust explosion; Dust explosion characteristics; Explosion severity; Explosion sensitivity; Dust explosion hazardous area;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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