Browse > Article

A Study on The Spontaneous Ignition of a Hydroxy Propyl Methyl Cellulose Dust Cloud  

Lim, Woo-Sub (Department of Safety Engineering, Graduate school, Pukyong National University)
Mok, Yun-Soo (Department of Safety Engineering, Pukyong National University)
Publication Information
Journal of the Korean Society of Safety / v.19, no.1, 2004 , pp. 137-140 More about this Journal
Abstract
The minimum ignition temperature at which the dust cloud can spontaneously ignite is considered to be very important in industries to prevent explosion occurring in hot surfaces. This paper has dealt with the experimental study of the determination of minimum ignition temperature of Hydroxy Propyl Methyl Cellulose (HPMC) dust cloud. We have used the Godbert-Greenwald Furnace Apparatus to determine the ignition temperature and limiting oxyten concentration for dust could. The experimental determinations on the minimum ignition temperature were carried out with various particle size with nominal diameters 45, 75 and 106${\mu}m$. The limiting oxygen concentration of dust cloud was determinated for the smaller size(45${\mu}m$) HPMC. Minimum ignition temperature of dust cloud was at 364$^{\circ}C$ for the concentration of 2.5g/L in the air and became higher with the increasing of nitrogen concentration. It was also found that the ignition didn't occur when the oxygen concentration was below 10%, and limiting oxygen concentration is at 11%.
Keywords
dust cloud; minimum ignition temperature; limiting oxygen concentration; Hydroxy Propyl Methyl Cellulose; Godbert-Greenwald Furnace Apparatus;
Citations & Related Records
연도 인용수 순위
  • Reference
1 P. Field, 'Dust Explosion', Elsevier Sci. Pub., Amsterdam, 1982
2 Waylcrnd C. Griffith, 'Dust Explosion' Ann. Rev. Fluid Mech, 1978
3 Manju Mittal, B.K. Guha, 'Study of Ignition Temperature of a Polyethylene Dust Cloud', Fire and materials, Vol. 20, pp. 97-105, 1996   DOI
4 Norbert Jaeger, Richard Siwek, 'Prevent Explosion of Combustible Dust', Chem. Eng. Prog., Vol. 3, pp. 25-37, 1999
5 Y.S. Mok, J. S. Kim, S.H. Park, 'A Study on the Ignition Energy of MBS Dust Explosion', Proceeding of the 1st Conference of the Association of Korean-Japanese Safety Engineering Society, pp. 172-175, 1999
6 Richard E. Cocks, 'Dust Explosion: Prevention and control', Chemical engineering, pp. 94, 1979