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A Study on The Effect of Humidity and Temperature of Hydroxy Propyl Methyl Cellulose Dust  

Lim Woo-Sub (Department of Safety Engineering, Graduate School, Pukyong National University)
Mok Yun-Soo (Department of Safety Engineering, Pukyong National University)
Choi Jae-Wook (Department of Safety Engineering, Pukyong National University)
Publication Information
Journal of the Korean Society of Safety / v.19, no.3, 2004 , pp. 65-69 More about this Journal
Abstract
This study was performed with Hartmann type dust explosion apparatus and Godbert-Greenwald furnace apparatus in order to research the effect of temperature and humidity affecting LEL, minimum ignition temperature of Hydroxy Propyl Methyl Cellulose. The experimental determinations in the range between $20^{\circ}C\;and\;60^{\circ}C$ of temperature was not affected $LEL(180g/m^3)$ but LEL showed $200g/m^3\;and\;250g/m^3\;at\;80^{|circ}C\;and\;100^{\circ}C$. As the change of humidity LEL was $180g/m^3\;for\;50\%,\;200g/m^3\;for\;60\%\;and\;250g/m^3\;for\;70\%$ but dust explosion didn't occur over $80\%$. The ignition temperature of HPMC dust clouds was increased as increasing of humidity. So, the minimum ignition temperatures at $50\%,\;60\%,\;70\%\;80\%$ of humidity was $363^{\circ}C,\;375^{\circ}C,\;397^{\circ}C,\;405^{\circ}C$.
Keywords
hydroxy propyl methyl cellulose; dust explosion; dust cloud; lower explosive limit; minimum ignition temperature; hartmann; godbert-greenwald furnace;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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