关键词: 丙酮, 爆炸上限, 温度, 爆炸下限

Abstract: Acetone is widely used as a common organic solvent, and temperature is the key factor affecting its explosion limits. Based on theoretical analysis, this paper determines the influence of temperature on explosion limits, and proposes a quantitative calculation method for the effect of temperature on acetone explosion limits. The algorithm reveals that the logarithmic ratio of the difference between the upper and lower acetone explosion limits at different temperatures has a linear relationship with the reciprocal difference of temperature, with a proportional coefficient of about -101.21. Experimental verification of the algorithm was carried out with a 20 L sphere explosion test apparatus. The results show that with the acetone vapor temperature rising from 25 ℃ to 115 ℃, the decrease ratio of the lower acetone explosion limit is about 3.0%, while the increase ratio of the upper explosion limit is about 6.0%, indicating that the effect of temperature on the upper explosion limit is greater than that on the lower one. The difference of explosion limits increases from 10.62% to 11.50%, with an increase ratio of about 8.3%. The experimental results verify the algorithm proposed in this paper.

Key words: acetone, upper explosion limit, temperature, correlation law, lower explosion limit