Measurement of Autoignition Temperature of Ethylbenzene+n-hexanol and Ethylbenzene+n-propionic Acid Systems

Dong-Myeong, Ha; Sung-Jin, Lee

Journal of Korean Institute of Fire Science and Engineering 2007;21(3):33-40.
Published online September 30, 2007.

Ethylbenzene+n-hexanol 계와 ethylbenzene+n-propionic acid계의 최소자연발화온도의 측정

하동명, 이성진

¹세명대학교 보건안전공학과²세명대학교 임상병리학과

Measurement of Autoignition Temperature of Ethylbenzene+n-hexanol and Ethylbenzene+n-propionic Acid Systems

Ha Dong-Myeong, Lee Sung-Jin

요약

화재 및 폭발을 방호하기 위해서 최소자연발화온도는 제시된 낮은 값을 사용하는 것이 일반적이다. 본 연구에서는 ASTM E659-78 장치를 이용하여 가연성 혼합물인 ethylbenzene+n-hexanol 계와 ethylbenzene+n-propionic acid 계의 발화지연시간과 AIT 관계를 측정하였다. 2성분계를 구성하는 순수물질인 ethylbenzene, n-hexanol, n-propionic acid의 측정된 최소자연발화온도는 각각 $475^{circ}C,;275^{circ}C;and;511^{circ}C$였다. 그리고 두 개의 2성분계에서 측정된 발화지연시간은 제시된 식에 의한 예측된 발화지연시간과 적은 평균절대오차에서 일치하였다.

Abstract

The values of the AITs(Autoignition temperatures) for fire and explosion protection are normally the lowest reported. This study measured the AITs of ethylbenzene+n-hexanol and ethylbenzene+n-propionic acid Systems from ignition delay time(time lag) by using ASTM E659-78 apparatus. The AITs of ethylbenzene, n-hexanol and n-propionic acid which constituted binary systems were $475^{circ}C,;275^{circ}C;and;511^{circ}C$, respectively. The experimental ignition delay time of ethylbenzene+n-hexanol and ethylbenzene+n-propionic acid systems were a good agreement with the calculated ignition delay time by the proposed equations with a few A.A.D.(average absolute deviation).

Key Words: AITs(Autoignition temperatures), Ignition delay time(time lag), ASTM E659-78, Fire and explosion prevention, Ethylbenzene+n-hexanol system, Ethylbenzene+n-propionic acid system