A Study on Characteristics of Auto Ignition and Activation Energy of Ethylene Glycol and Diethylene Glycol

Ethylene Glycol과 Diethylene Glycol의 자연발화 특성과 활성화에너지에 관한 연구

Kim, Jung-Hun;Choi, Jae-Wook

  • Received : 2016.01.20
  • Accepted : 2016.03.11
  • Published : 2016.04.30


Auto ignition characteristic is an important factor for handling combustible substance and fire prevention. This research studied about auto ignition characteristic and activation energy of Ethylene Glycol (EG) and Diethylene Glycol (DEG) by using ASTM D2155 type ignition temperature measuring apparatus. As the auto ignition temperatures, it was possible to get $434^{\circ}C$ for EG within sample amount range of $75{\sim}160{\mu}l$ and $387^{\circ}C$ for DEG within sample amount range of $130{\sim}150{\mu}l$. Also, it was possible to get $579^{\circ}C$ and $569^{\circ}C$ as instantaneous ignition temperatures with sample amount of $140{\mu}l$ for EG and DEG respectively. By using least square method from Semenov equation on measured ignition temperature and ignition delay time from this study, it was possible to calculate activation energy of EG as 25.41 Kcal/mol and DEG as 14.07 Kcal/mol. Therefore, it was possible to claim that DEG has more risk of auto ignition since the auto ignition temperature, instantaneous ignition temperature and activation energy of DEG is lower than EG.


auto ignition;auto ignition temperatures;instantaneous ignition temperatures


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