定容硫尘爆炸实验研究

IF 1.5 Q3 ENGINEERING, CHEMICAL
J. Kalman, N. Glumac, H. Krier
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引用次数: 4

摘要

由于粉尘火焰在工业安全和事故预防中的重要性,人们对其进行了数十年的研究。最近,粉尘火焰已成为对抗生物战的有希望的候选者。硫是一种特别令人感兴趣的元素,但硫尘火焰还没有得到很好的理解。测定了颗粒浓度为280 ~ 560g /m3、氧气体积浓度为10% ~ 42%的硫火焰的火焰温度和火焰速度。火焰温度随着氧浓度的增加而升高,从10%含氧条件下的约900 K到富氧条件下的超过2000 K。温度也随颗粒浓度的增加而略有升高。在含氧量为280 g/m3和560 g/m3的情况下,火焰速度分别从含氧量为10%时的约10 cm/s增加到含氧量为42%时的57和81 cm/s。尺度分析表明,在21%和42%的氧气中燃烧的火焰是扩散受限的。最后,确定了压力-时间数据可能用于测量定容粉尘爆炸中的火焰速度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Experimental study of constant volume sulfur dust explosions
Dust flames have been studied for decades because of their importance in industrial safety and accident prevention. Recently, dust flames have become a promising candidate to counter biological warfare. Sulfur in particular is one of the elements that is of interest, but sulfur dust flames are not well understood. Flame temperature and flame speed were measured for sulfur flames with particle concentrations of 280 and 560 g/m3 and oxygen concentration between 10% and 42% by volume. The flame temperature increased with oxygen concentration from approximately 900 K for the 10% oxygen cases to temperatures exceeding 2000 K under oxygen enriched conditions. The temperature was also observed to increase slightly with particle concentration. The flame speed was observed to increase from approximately 10 cm/s with 10% oxygen to 57 and 81 cm/s with 42% oxygen for the 280 and 560 g/m3 cases, respectively. A scaling analysis determined that flames burning in 21% and 42% oxygen are diffusion limited. Finally, it was determined that pressure-time data may likely be used to measure flame speed in constant volume dust explosions.
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来源期刊
Journal of Combustion
Journal of Combustion ENGINEERING, CHEMICAL-
CiteScore
2.00
自引率
28.60%
发文量
8
审稿时长
20 weeks
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