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Smoldering combustion of rice husk dusts on a hot surface
Faculty
Not Specified
Year:
2013
Type of Publication:
Article
Pages:
159-166
Authors:
El-Sayed, S. A, Khass, T. M
DOI:
10.1134/S0010508213020056
Journal:
COMBUSTION EXPLOSION AND SHOCK WAVES CONSULTANTS BUREAU/SPRINGER
Volume:
49
Research Area:
Thermodynamics; Energy \& Fuels; Engineering; Materials Science
ISSN
ISI:000317973300005
Keywords :
rice husk, hot surface temperature, dust ignition temperature, ignition delay, dust particle size, sample size
Abstract:
An accumulated combustible dust layer on some hot process equipment, such as grinders, dryers, hot bearings, etc., can be ignited and lead to fires if the hot surface temperature is sufficiently high. Experimental tests are used to determine the minimum hot surface temperature for dust ignition, the ignition temperature of dust itself, and the ignition times in this study. Egyptian rice husk dust is sieved into different sizes (particle diameters) to be used in this investigation. The effects of the dust particle size and the sample size (depth of the dust layer) on ignition parameters are tested. The boundary between the ignition and non-ignition conditions is investigated precisely through a large number of tests. The results show that the minimum hot plate temperature for ignition of dusts decreases as the dust layer depth increases.
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