[1]曹卫国①②,郑俊杰①②,彭于怀①,等.玉米淀粉粉尘爆炸特性及火焰传播过程的试验研究[J].爆破器材,2016,45(01):1-6.[doi:10.3969/j.issn.1001-8352.2016.01.001]
　CAO Weiguo,ZHENG Junjie,PENG Yuhuai,et al.Experimental Study on Explosion Characteristics and Flame Propagation Process of Corn Starch Dust[J].EXPLOSIVE MATERIALS,2016,45(01):1-6.[doi:10.3969/j.issn.1001-8352.2016.01.001]
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玉米淀粉粉尘爆炸特性及火焰传播过程的试验研究()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
45
期数:
2016年01
页码:
1-6
栏目:
基础理论
出版日期:
2016-01-29

文章信息/Info

Title:
Experimental Study on Explosion Characteristics and Flame Propagation Process of Corn Starch Dust
文章编号:
4981
作者:
曹卫国①②; 郑俊杰①②; 彭于怀①; 潘峰①②
①南京理工大学化工学院（江苏南京，210094）
②国家民用爆破器材质量监督检验中心（江苏南京，210094）
Author(s):
CAO Weiguo①②;  ZHENG Junjie①②;  PENG Yuhuai①;  PAN Feng①②
①School of Chemical Engineering, Nanjing University of Science and Technology (Jiangsu Nanjing, 210094)
②National Quality Supervision and Inspection Center for Industrial Explosive Materials (Jiangsu Nanjing, 210094)
关键词:
玉米淀粉; 最低着火温度; 爆炸下限质量浓度; 爆炸压力; 氧极限浓度; 火焰传播过程
Keywords:
corn starch;  the lowest ignition temperature;  minimum explosive concentration;  explosion pressure;  limit oxygen concentration;  flame propagation progress
分类号:
X932
DOI:
10.3969/j.issn.1001-8352.2016.01.001
文献标志码:
A
摘要:
为了全面地认识玉米淀粉粉尘爆炸的敏感性和爆炸破坏效应，分别采用粉尘云着火温度装置、20 L球粉尘爆炸装置和粉尘云火焰传播装置对玉米淀粉的粉尘云着火温度、爆炸下限质量浓度、爆炸压力、爆炸氧极限浓度以及粉尘云火焰传播过程进行了研究。结果表明：玉米淀粉粉尘云最低着火温度在380~390 ℃之间；粉尘云爆炸氧极限浓度（体积分数）在10%~11%之间；爆炸下限质量浓度和最大爆炸压力随着化学点火具质量的增加而呈现出不同的变化特征，随着化学点火具质量的增加，玉米淀粉的爆炸下限质量浓度逐渐降低，而玉米淀粉爆炸压力逐渐升高。在不同的粉尘质量浓度条件下，粉尘云火焰传播速度和火焰温度有一定的变化，在粉尘质量浓度为500 g/m3时，火焰传播速度和火焰温度均达到最大值，分别为13.81 m/s和 1 107 ℃。
Abstract:
To investigate the explosion sensitivity and explosion damage effects of corn starch dust explosion, a dust cloud ignition temperature device, 20 L spherical dust explosion device and dust cloud flame propagation device were used respectively to study ignition temperature, explosion limit concentration, explosion pressure,limit oxygen concentration, and the flame propagation characteristics of dust cloud. Results indicate that the lowest ignition temperature of corn dust cloud is 380-390 ℃.The limit oxygen concentration(volume fraction)of corn dust cloud is 10%-11%.With the increased of chemical igniter quality, the lowest explosive limit concentration reduces, and the explosion pressure increases. Propagation speed and temperature of flame changes with different concentrations of dust cloud. In the concentration of 500 g/m3, the maximum propagation speed of flame front is 13.81 m/s and the highest flame temperature is 1107 ℃.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2015-06-14
基金项目：国家自然科学基金项目（51174047）
作者简介：曹卫国（1984~），男，博士，主要从事粉尘爆炸、粉尘火焰传播、危险品分类等方面的研究。E-mail:caoweiguoiem@163.com
通信作者：郑俊杰（1973~），女，工程师，主要从事含能材料方面的研究。E-mail:78300136@qq.com
更新日期/Last Update: 2016-01-28