| 碳酸氢钠及其固态分解产物对玉米淀粉爆炸抑制实验研究* |
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| 引用本文： | 鲁昆仑,陈晓坤,王媛媛,赵腾龙.碳酸氢钠及其固态分解产物对玉米淀粉爆炸抑制实验研究*[J].中国安全生产科学技术,2021,17(9):126-131. |
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| 作者姓名： | 鲁昆仑 陈晓坤 王媛媛 赵腾龙 |
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| 作者单位： | （1.西安科技大学 安全科学与工程学院，陕西 西安 710054；2.四川轻化工大学 化学与环境工程学院，四川 自贡 634000） |
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| 基金项目： | * 基金项目: 2020年教育部产学合作协同育人项目（202002046062）；四川轻化工大学2021年校级教学改革项目（JG-2111） |
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| 摘 要： | 为研究NaHCO3对玉米淀粉爆炸的抑制效果，采用20 L球形爆炸装置测试玉米淀粉在添加不同抑制比NaHCO3及其固态分解产物Na2CO3后爆炸参数变化规律，并分析NaHCO3抑制淀粉爆炸过程。结果表明:NaHCO3及Na2CO3对玉米淀粉爆炸均有抑制作用，NaHCO3抑制效果优于Na2CO3；混合粉尘的最大爆炸压力、最大爆炸压力上升速率与爆炸指数随抑制比增大而逐渐减小，爆炸时间随抑制比增大而逐渐延长。随着NaHCO3浓度增加，物理抑制效果逐渐增加，化学抑制效果基本保持不变。NaHCO3浓度不同时，其抑制主导过程不同，当抑制比为0.1~0.5时，NaHCO3抑制效果以化学抑制为主，物理抑制为辅；抑制比为0.8和1.2时，NaHCO3抑制效果以物理抑制为主，化学抑制为辅；当抑制比为1.2时，玉米淀粉爆炸完全被NaHCO3抑制，此时物理抑制起主导作用。
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| 关 键 词： | 玉米淀粉 碳酸氢钠 爆炸参数 抑制比 抑制过程 |
Experimental study on inhibition of cornstarch dust explosion with sodium bicarbonate and its solid decomposition product |
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| LU Kunlun,CHEN Xiaokun,WANG Yuanyuan,ZHAO Tenglong.Experimental study on inhibition of cornstarch dust explosion with sodium bicarbonate and its solid decomposition product[J].Journal of Safety Science and Technology,2021,17(9):126-131. |
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| Authors: | LU Kunlun CHEN Xiaokun WANG Yuanyuan ZHAO Tenglong |
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| Affiliation: | (1.College of Safety Science and Engineering,Xi’an University of Science and Technology,Xi’an Shaanxi 710054,China;2.College of Chemistry and Environmental Engineering,Sichuan University of Science and Engineering,Zigong Sichuan 634000,China) |
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| Abstract: | To investigate the inhibition effect of NaHCO3 on the cornstarch dust explosion,the change laws of the explosion parameters of cornstarch with addition NaHCO3 and its solid decomposition product Na2CO3 at various inhibition ratios were tested by using a 20 L spherical explosion device,and the inhibition processes of NaHCO3 on the cornstarch dust explosion were also analyzed.The results showed that the cornstarch dust explosion could be inhibited by NaHCO3 and Na2CO3,and the inhibition effect of NaHCO3 was better than that of Na2CO3.The maximum explosion pressure,maximum explosion pressure rising rate and explosion index of aluminum/NaHCO3 and aluminum/Na2CO3 gradually decreased with the increase of inert ratio,and the explosion time was prolonged by the increase of inert ratio.With the increase of NaHCO3 concentration,the physical inhibition effect increased gradually,while the chemical inhibition effect basically remained unchanged.The dominant processes of inhibition were different at various concentrations of NaHCO3.When the inhibition ratio was 0.1~0.5,the inhibition effect of NaHCO3 was mainly the chemical inhibition,and the physical inhibition was supplementary.When the inhibition ratio was 0.8 and 1.2,the inhibition effect of NaHCO3 was mainly the physical inhibition,and the chemical inhibition was supplementary.When the inhibition ratio was 1.2,the cornstarch dust explosion was completely inhibited by NaHCO3,and the physical inhibition played a leading role. |
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| Keywords: | cornstarch dust sodium bicarbonate (NaHCO3) explosion parameter inhibition ratio inhibition process |
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