Low-temperature autoignition of binary mixtures of methane with C₃–C₅ alkanes

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• 作者：K. Ya. Troshin ; A. V. Nikitin ; A. A. Borisov…
• 关键词：natural gas ; associated gas ; methane ; propane ; pentane ; alkanes ; autoignition ; autoignition delay
• 刊名：Combustion, Explosion, and Shock Waves
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：52
• 期：4
• 页码：386-393
• 全文大小：677 KB
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Mechanics
  Mechanics, Fluids and Thermodynamics
  Physical Chemistry
  Vibration, Dynamical Systems and Control
  Engineering, general
  Russian Library of Science
  
• 出版者：Springer New York
• ISSN：1573-8345
• 卷排序：52

文摘

The influence of C₃–C₅ alkanes on the ignition of their binary mixtures with methane in air at a temperature of 523–1000 K and a pressure of 1 atm is studied. It is shown that the presence of only 1% C₃–C₅ alkanes considerably reduces the ignition delay of methane. At a concentration of 10–20%, the ignition delay practically corresponds to the autoignition delay of the added alkane. The effect of additives of heavy alkanes becomes less noticeable with increasing initial temperature. These results can be used to estimate the permissible content of C₅₊ heavy species in gas turbine engine fuel at which their influence on the fuel knock resistance is sufficiently low. It is only 0.5%.