KNO_3/S/C混合粉燃烧危险性实验研究
|
摘要
为了研究黑火药的原料在加工过程中的燃烧危险性,采用恒温加热板研究了KNO_3/S/C混合粉尘层的最低着火温度。同时,采用G-G恒温炉研究了粉尘云浓度、KNO_3粒度以及KNO_3/S/C质量比对KNO_3/S/C混合粉尘云最低着火温度的影响。研究表明:KNO_3/S/C混合粉尘层最低着火温度为280℃;随着粉尘云浓度的增加,KNO_3/S/C混合粉尘云最低着火温度先降后升;随着KNO_3粒度的增大,KNO_3/S/C混合粉尘云最低着火温度相应升高;当碳含量保持不变时,随着硫含量增加,KNO_3/S/C混合粉尘云最低着火温度呈下降趋势,当硫的质量分数为50%时,KNO_3/S/C混合粉尘云最低着火温度为282℃。由此可知,KNO_3/S/C混合粉在堆积和悬浮状态下,对热源较敏感。
In order to research the combustion hazard of the black powder components during processing,the homoiothermal hot plate was used to estimate the minimum ignition temperature of KNO_3/S/C mixed dust layers.Meanwhile,the effects of the dust cloud concentration,KNO_3 particle size and the mass ratio of KNO_3/S/C on the minimum ignition temperature of the mixed dust cloud were studied by Godbert-Greenwald furnace apparatus.Results showed that the minimum ignition temperature of KNO_3/S/C mixed dust layers was 280 ℃.The minimum ignition temperature of dust cloud decreased first and then increased with the increase of the dust cloud concentration.The minimum ignition temperature of the dust cloud increased with the increase of the KNO_3 particle size.When the C content of the KNO_3/S/C mixture remained unchanged,the minimum ignition temperature of the dust cloud appeared a decrease trend with the increase of the S content of the KNO_3/S/C mixture.The minimum ignition temperature of the dust cloud of the KNO_3/S/C mixturewas 282 ℃ while the mass fractionof S was 50%.Therefore,KNO_3/S/C mixturewas sensitive to heat during cumulated and suspended.
In order to research the combustion hazard of the black powder components during processing,the homoiothermal hot plate was used to estimate the minimum ignition temperature of KNO_3/S/C mixed dust layers.Meanwhile,the effects of the dust cloud concentration,KNO_3 particle size and the mass ratio of KNO_3/S/C on the minimum ignition temperature of the mixed dust cloud were studied by Godbert-Greenwald furnace apparatus.Results showed that the minimum ignition temperature of KNO_3/S/C mixed dust layers was 280 ℃.The minimum ignition temperature of dust cloud decreased first and then increased with the increase of the dust cloud concentration.The minimum ignition temperature of the dust cloud increased with the increase of the KNO_3 particle size.When the C content of the KNO_3/S/C mixture remained unchanged,the minimum ignition temperature of the dust cloud appeared a decrease trend with the increase of the S content of the KNO_3/S/C mixture.The minimum ignition temperature of the dust cloud of the KNO_3/S/C mixturewas 282 ℃ while the mass fractionof S was 50%.Therefore,KNO_3/S/C mixturewas sensitive to heat during cumulated and suspended.
引文
[1]徐永士,李孝玉,张彬,等.黑火药的性质及其事故预防[J].中国化工贸易,2013,5(11):359.
[2]王犇,臧晓勇,赵琳,等.硫磺粉尘爆炸特性研究[J].无机盐工业,2014,46(9):62-65.
[3]庞磊,马冉,高建村,等.粉尘云浓度对HDPE粉尘云最低着火温度的影响[J].中国安全生产科学技术,2017,13(5):5-9.
[4]任瑞娥,谭迎新.木粉最低着火温度的实验研究[J].中国粉体技术,2014(5):45-47.
[5]叶亚明,胡双启,胡立双,等.锰粉尘云最小点火能及其抑爆研究[J].消防科学与技术,2016,35(5):600-603.
[6]任瑞娥,谭迎新.镁铝合金粉最低着火温度的实验测试[J].消防科学与技术,2014,33(8):864-866.
[7]钟英鹏,徐冬,李刚,等.镁粉尘云最低着火温度的实验测试[J].爆炸与冲击,2009,29(4):429-433.
[8]王振刚,张帆,赵琳,等.硫磺粉尘燃爆危险性研究[J].无机盐工业,2015,47(2):56-59.
[2]王犇,臧晓勇,赵琳,等.硫磺粉尘爆炸特性研究[J].无机盐工业,2014,46(9):62-65.
[3]庞磊,马冉,高建村,等.粉尘云浓度对HDPE粉尘云最低着火温度的影响[J].中国安全生产科学技术,2017,13(5):5-9.
[4]任瑞娥,谭迎新.木粉最低着火温度的实验研究[J].中国粉体技术,2014(5):45-47.
[5]叶亚明,胡双启,胡立双,等.锰粉尘云最小点火能及其抑爆研究[J].消防科学与技术,2016,35(5):600-603.
[6]任瑞娥,谭迎新.镁铝合金粉最低着火温度的实验测试[J].消防科学与技术,2014,33(8):864-866.
[7]钟英鹏,徐冬,李刚,等.镁粉尘云最低着火温度的实验测试[J].爆炸与冲击,2009,29(4):429-433.
[8]王振刚,张帆,赵琳,等.硫磺粉尘燃爆危险性研究[J].无机盐工业,2015,47(2):56-59.