Benzene destruction in fuel-rich jet-stirred reactor combustion

✍ Scribed by Craig B. Vaughn; Jack B. Howard; John P. Longwell

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 770 KB
• Volume: 87
• Category: Article
• ISSN: 0010-2180
• DOI: 10.1016/0010-2180(91)90113-p

✦ Synopsis

Benzene destruction was studied using a jet-stirred reactor burning premixed C2H2, C6H6, H2, 02, N 2 mixtures at 1 atm, 1630 K, a fuel equivalence ratio of 2.2, a C/H ratio of 0.5, and residence times of 5-6 ms. Stable species concentrations were measured by water-cooled probe sampling and gas chromatography. A set of equations relating the concentrations of radical species to those of measured stable species were solved to determine radical concentrations under the range of experimental conditions, c6a 6 formation and destruction occur simultaneously in combustion, but in this study, the destruction was enhanced relative to formation by adding C6H 6 to the fuel, thereby reducing the sensitivity of the net destruction rate to the formation kinetics. The net C6H 6 destruction rates predicted by the model are within 90% of the experimental values. According to the model, the largest contribution to C6H 6 destruction under these conditions is H abstraction, largely by H atom, OH and CH3, and the C6H 5 formed is destroyed by both addition and unimolecular destruction reactions.