✦ LIBER ✦

Effect of additives on the threshold ignition temperature of acetylene

✍ Scribed by Clifford M. Detz

Publisher: Elsevier Science
Year: 1979
Tongue: English
Weight: 423 KB
Volume: 34
Category: Article
ISSN: 0010-2180
DOI: 10.1016/0010-2180(79)90091-9

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✦ Synopsis

The influence that a series of additives has on the threshold temperature for the ignition of an explosive decomposition of acetylene by a heated wire has been determined over an acetylene pressure range of 2-22 attn. The additives include CO2, NO, HBr, HC1, HI, CHaCI, CH3Br , CF3Br , C2H3Br , and SO 2. NO, HBr, HCI, HI, and C2H3Br stabilize acetylene to a degree that cannot be explained by physical effects alone, and which implies a chemical interference with the initiation of the decomposition reaction. CHaC1 , CHaBr, and CFaBr have no measurable effect on the ignition, while SO 2 mildly promotes it. The methyl halides, vinyl bromide, and CFaBr react with acetylene to a significant extent under the conditions used in this study. The hydrogen halides both react with acetylene and partially decompose on the heated ignition wire.

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