Korean Chemical Engineering Research, Vol.53, No.5, 553-556, October, 2015
디메틸아세트아미드(DMAc)의 연소특성치의 측정 및 예측
The Measurement and Prediction of Combustible Properties of Dimethylacetamide (DMAc)
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초록
공정의 안전을 위해서 취급물질의 정확한 연소특성치의 사용은 매우 중요하다. 화학산업에서 다양하게 사용되고 있는 디메틸아세트아미드의 안전한 취급을 위해서 인화점과 최소자연발화온도를 측정하였다. 폭발하한계는 실험에서 얻어진 하부인화점을 이용하여 계산하였다, Setaflash 밀폐식은 61 oC, Pensky-Martens 밀폐식에서는 65 oC 그리고 Tag 개방식에서는 68 oC, Cleveland 자동 개방식에서는 71 oC로 측정되었다. ASTM E659 장치에 의한 최소자연발화온도는 347 oC로 측정되었다. 측정된 하부인화점 61 oC에 의한 폭발하한계는 1.52 vol%로 계산되었다. 폭발한계는 측정된 인화점이나 문헌에 제시된 인화점을 이용하여 예측가능함을 알 수 있었다.
The usage of the correct combustion characteristic of the treated substance for the safety of the process is critical. For the safe handling of dimethylacetamide (DMAc) being used in various ways in the chemical industry, the flash point and the autoignition temperature (AIT) of DMAc was experimented. And, the lower explosion limit of DMAc was calculated by using the lower flash point obtained in the experiment. The flash points of DMAc by using the Setaflash and Pensky-Martens closed-cup testers measured 61 oC and 65 oC, respectively. The flash points of DMAc by using the Tag and Cleveland automatic open cup testers are measured 68 oC and 71 oC. The AIT of DMAc by ASTM 659E tester was measured as 347 oC. The lower explosion limit by the measured flash point 61 oC was calculated as 1.52 vol%. It was possible to predict lower explosion limit by using the experimental flash point or flash point in the literature.
Keywords:Dimethylacetamide (DMAc);Flash Point;Explosion Limit;Autoignition Temperature (AIT);ASTM E659
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