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Seta flash 장치에 의한 n-Octane + n-Nonane계 및 n-Nonane + n-Decane계의 인화점 결정
하동명(Dong-Myeong Ha),이성진(Sungjin Lee) 한국가스학회 2020 한국가스학회지 Vol.24 No.6
인화성 액체 용액을 안전하게 저장하고 운반하기 위해서는, 인화점 정보를 알고 있는 것이 매우 중요하다. 이 논문에서는 n-octane+n-nonane 계와 n-nonane+n-decane 계의 인화점을 Seta flash 장치로 측정하였으며, 인화점을 정확하게 예측하기 위한 경험식을 제시한다. 경험식은 n-octane+n-nonane 계와 n-nonane+n-decane 계의 인화점을 예측하기 위해 사용되었으며, 또한 Unifac 식에 기반을 둔 계산 모델과 비교하였다. Unifac 식을 이용한 예측 결과의 절대평균오차는 n-octane+n-nonane 계의 경우 0.7℃였고, n-nonane+n-decane 계의 경우 0.6℃이었다. 경험식에 의한 예측값의 절대평균오차는 n-octane+n-nonane 계의 경우 0.2℃였고, n-nonane+n-decane 계의 경우 0.4℃이었다. 결론적으로, 본 논문에서 제시된 경험식은 매우 만족한 결과를 나타내었다. In order to guarantee safe storage and transportation of a flammable liquid solution, it is very important to know its flash point information. In this paper, flash points of n-octane+n-nonane system and n-nonane+n-decane system were measured by Seta flash apparatus and an empirical equation is proposed for the accurate estimation of flash point. Empirical equation is used to predict flash point of n-octane+n-nonane system and n-nonane+n-decane system, which were also compared to Unifac-based model. Absolute average errors of flash point data predicted by Unifac-based model are 0.7℃and 0.6℃ for n-octane+n-nonane system and n-nonane n-decane system, respectively. Absolute average errors of flash point data predicted by empirical equation are 0.2℃and 0.4℃ for n-octane+n-nonane system and n-nonane+n-decane system, respectively. In conclusion, empirical equation proposed in this paper, presented the most satisfactory.
MSDS 적정성을 위한 아세틱안하이드리드의 연소특성치 측정
하동명 ( Dong Myeong Ha ) 한국안전학회(구 한국산업안전학회) 2014 한국안전학회지 Vol.29 No.4
For the safe handling of acetic anhydride, this study was investigated the explosion limits of acetic anhydride in the referencedata. And the lower flash points, upper flash points, and AITs(auto-ignition temperatures) by ignition delay time were experimented. Thelower and upper explosion limits of acetic anhydride by the investigation of the literatures recommended 2.9 Vol% and 10.3 Vol.%,respectively. The lower flash point of acetic anhydride by using Setaflash closed-cup tester was experimented 49℃. The lower flash pointacetic anhydride by using Tag and Cleveland open cup tester were experimented 55℃and 62℃, respectively. Also, this study measuredrelationship between the AITs and the ignition delay times by using ASTM E659 tester for acetic anhydride. The experimental AIT ofacetic anhydride was 350℃.
하동명 ( Dong Myeong Ha ) 한국안전학회(구 한국산업안전학회) 2013 한국안전학회지 Vol.28 No.8
For the safe handling of n-decanol, this study was investigated the explosion limits of n-decanol in the reference data. And thelower flash points, upper flash points, fire points and AITs(auto-ignition temperatures) by ignition delay time were experimented. By usingthe literatures data, the lower and upper explosion limits of n-decanol recommended 0.7 and 5.5 Vol.%, respectively. The lower flash point ofn-decanol by using Setaflash closed-cup tester was experimented 105 ℃. The lower flash point and the fire point of n-decanol by usingCleveland open cup tester were experimented 110 ℃ and 116 ℃, respectively. Also, this study measured relationship between the AITs andthe ignition delay times by using ASTM E659 tester for n-decanol. The experimental AIT of n-decanol was 258℃.