硫磺粉尘燃爆危险性研究

发布时间：2018-01-24 22:06

  本文关键词： 硫磺 自燃温度 最小点火能 爆炸下限 爆炸指数　出处：《无机盐工业》2015年02期 　论文类型：期刊论文

【摘要】：为预防硫磺粉尘的燃爆危险性,测试了硫磺的自燃温度、自热特性、热稳定性、最小点火能、爆炸下限质量浓度、爆炸压力和爆炸指数,根据实验结果对硫磺粉尘危险性做了分级。结果表明,随着粒径的减小,硫磺粉尘的自燃温度、最小点火能和爆炸下限质量浓度相应降低,爆炸压力和爆炸指数则升高;70μm以下粒径的硫磺粉尘的自燃温度(AIT)为220℃,最小点火能(MIE)为0.14 m J,爆炸下限质量浓度(MEC)为17.5 g/m3,最大爆炸压力(pmax)为1.15 MPa,最大爆炸指数(Kmax)为39.87 MPa·m/s,因此燃爆危险性最高;450μm以下粒径的硫磺粉尘爆炸危险性等级均为St3级。
[Abstract]:In order to prevent the explosion risk of sulfur dust, the spontaneous combustion temperature, self-heating property, thermal stability, minimum ignition energy, lower explosive mass concentration, explosion pressure and explosion index of sulfur dust were tested. According to the experimental results, the risk of sulfur dust is classified. The results show that the spontaneous combustion temperature, minimum ignition energy and lower explosive mass concentration of sulfur dust decrease with the decrease of particle size. The explosion pressure and explosion index increased. The spontaneous combustion temperature of sulfur dust under 70 渭 m is 220 鈩，

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