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J Hazard Mater

Title:		Explosion characteristics of flammable organic vapors in nitrous oxide atmosphere
Author(s):		Koshiba Y; Takigawa T; Matsuoka Y; Ohtani H;
Address:		"Faculty of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan. ykoshiba@ynu.ac.jp"
Journal Title:		J Hazard Mater
Year:		2010
Volume:		20100730
Issue:		1-Mar
Page Number:		746 - 753
DOI:		10.1016/j.jhazmat.2010.07.089
ISSN/ISBN:		1873-3336 (Electronic) 0304-3894 (Linking)
Abstract:		"Despite unexpected explosion accidents caused by nitrous oxide have occurred, few systematic studies have been reported on explosion characteristics of flammable gases in nitrous oxide atmosphere compared to those in air or oxygen. The objective of this paper is to characterize explosion properties of mixtures of n-pentane, diethyl ether, diethylamine, or n-butyraldehyde with nitrous oxide and nitrogen using three parameters: explosion limit, peak explosion pressure, and time to the peak explosion pressure. Then, similar mixtures of n-pentane, diethyl ether, diethylamine, or n-butyraldehyde with oxygen and nitrogen were prepared to compare their explosion characteristics with the mixtures containing nitrous oxide. The explosion experiments were performed in a cylindrical vessel at atmospheric pressure and room temperature. The measurements showed that explosion ranges of the mixtures containing nitrous oxide were narrow compared to those of the mixtures containing oxygen. On the other hand, the maximum explosion pressures of the mixtures containing nitrous oxide were higher than those of the mixtures containing oxygen. Moreover, our experiments revealed that these mixtures differed in equivalence ratios at which the maximum explosion pressures were observed: the pressures of the mixtures containing nitrous oxide were observed at stoichiometry; in contrast, those of the mixtures containing oxygen were found at fuel-rich area. Chemical equilibrium calculations confirmed these behaviors"
Keywords:		"Atmosphere *Explosions Explosive Agents Gases/*chemistry Models, Chemical Nitrogen Nitrous Oxide/*chemistry Volatile Organic Compounds/*chemistry;"
Notes:		"MedlineKoshiba, Yusuke Takigawa, Tomihisa Matsuoka, Yusaku Ohtani, Hideo eng Netherlands 2010/08/20 J Hazard Mater. 2010 Nov 15; 183(1-3):746-53. doi: 10.1016/j.jhazmat.2010.07.089. Epub 2010 Jul 30"