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Measurement and Prediction of Autoignition Temperature(AIT) of n-Propanol and Acetic acid System

노말프로판올과 아세틱에씨드 계의 최소자연발화온도(AIT) 측정 및 예측

  • Received : 2017.01.17
  • Accepted : 2017.04.12
  • Published : 2017.04.30

Abstract

The autoignition temperature (AIT) is crucial combustible characteristics which need attention in chemical process that handle hazardous materials. The AIT, also to as minimum spontaneous ignition temperature(MSIT), is the lowest temperature of a hot surface at which the substance will spontaneously ignite without any obvious sources of ignition such as a spark or flame. The AIT may be used as combustion property to specify operating, storage, and materials handling procedures for process safety. This study measured the AITs of n-propanol+acetic acid system from ignition delay time(time lag) by using ASTM E659 apparatus. The AITs of n-propanol and acetic acid which constituted binary system were $435^{\circ}C$ and $212^{\circ}C$, respectively. The experimental AITs of n-propanol+acetic acid system were a good agreement with the calculated AITs by the proposed equations with a few A.A.D.(average absolute deviation). In the case of n-propanol and acetic acid system, the minimum autoignition temperature behavior (MAITB), which is lower than the lower AIT, is shown among the two pure substances constituting the mixture.

Keywords

AIT(Autoignition temperature);chemical process;ignition delay time(time lag);ASTM E659;n-propanol and acetic acid system;minimum autoignition temperature behavior (MAITB)

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Acknowledgement

Supported by : 세명대학교