Explosion hazard of gaseous ozone
Explosion hazard of gaseous ozone
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DOI：
10.1252/jcej.32.295
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发表时间：
1999-06-01
影响因子：
0.8
通讯作者：
Fukuda, T
中科院分区：
文献类型：
--
作者：
Koike, K;Inoue, G;Fukuda, T
通过电火花点火实验，研究了浓度为60vol%的气态臭氧的爆炸特性。结果表明，在常温常压下，臭氧在氧气中的爆炸下限约为10vol%。在10 - 12体积%的范围内观察到点火容器中臭氧的部分分解，并且浓度大于12体积%的臭氧可引起爆炸性链分解并完全转化为氧气。随着初始压力的降低，爆炸下限向高浓度方向移动。例如，在100 Torr下，下限为25vol%，爆炸压力比与臭氧浓度成正比。对于40体积%的臭氧，该比率为8。在我们的实验中，在臭氧浓度高于40体积%时观察到爆轰。此外，我们还证明了CO2对臭氧爆炸的抑制作用很弱，因此，在臭氧-氧气混合物中加入70vol%的CO2可以将爆炸下限提高到12vol%。
A series of ignition experiments using electric sparks are made to investigate the explosion characteristics of gaseous ozone with a concentration up to 60 vol%. The results show that the lower explosion limit of ozone diluted in oxygen at room temperature and atmospheric pressure is about 10 vol%. Partial decomposition of ozone in the ignition vessel is observed in the range from 10 to 12 vol%,and ozone with a concentration of more than 12, vol% can cause an explosive chain decomposition and convert to oxygen completely. The lower explosion limit shifts to higher concentration with decreasing initial pressure. For instance, at 100 Torr the lower limit is 25 vol%, Explosion pressure ratio Is proportional to ozone concentration. For 40 vol% ozone, the ratio is 8, Besides. detonation was observed at ozone concentration above 40 vol% in our experiment. Moreover, we have proved that carbon dioxide has a weak restraint effect on ozone explosion, As a result, adding carbon dioxide to 70 vol% into an ozone-oxygen mixture can raise the lower explosion limit to 12 vol%.