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2성분계 가연성액체혼합물의 인화점
Flash Points of a Flammable Liquid Mixture of Binary System
HWAHAK KONGHAK, April 1999, 37(2), 146-150(5), NONE
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Abstract
가연성액체의 위험지수는 인화점에 따라 구분된다. 인화점의 구분은 혼합용제와 같은 가연성액체를 안전하게 취급하기 위해서 매우 중요하다. 모든 인화점 거동의 기초는 증기압과 폭발한계이다. 순수성분 및 혼합용제의 인화점은 라울의 법칙 , 달튼의 법칙,르샤틀리에 법칙 그리고 활동도계수 모델을 사용함으로써 계산할 수 있다. 본 연구에서는 가연성 2성분계인 메틸에틸케톤과 톨루엔계의 하부인화점과 상부인화점의 실험자료를 라울의 법칙과 van Laar식에 의해 계산된 값과 비교하였다. 그 결과 메틸에틸케톤과 톨루엔계의 하부인화점의 실험자료는 라울의 법칙에 의해 예측된 값과 일치 하였고, 상부인화점의 실험자료는 van leu식에 의해 예측된 간과 일치하였다. 제시한 방법론에 의해 가연성혼합용제의 인화점 실험자료의 신뢰도 평가가 가능하다.
The hazardous index of a flammable liquid is classified according to its flash point. A classification of the flash points is important for the safe handling of flammable liquids such as solvent mixtures. Basic to all flash points behavior are vapor pressure and explosive limits(lower explosive limit and upper explosive limit). The flash points of pure substances and solvent mixtures can be calculated with the appropriate use of the fundamental laws of Raoult, Dalton, Le Chatelier and activity coefficient models. In this study, experimentally determined lower and upper flash points of M.E.K.-toluene system were compared with the calculated values by using Raoult''''s law and van tau equation. The lower flash points were in agreement with the predicted values by Raoult''''s law, and the upper flash points were in agreement with the predicted values by van Laar equation. By means of this methodology, it is possible to evaluate reliability of experimental data of the flash points of the flammable mixtures.
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