| 木薯淀粉粉尘云的爆炸特性 |
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| 引用本文： | 张睿冲,邓红卫,谢承煜.木薯淀粉粉尘云的爆炸特性[J].矿冶工程,2019,39(3):16-19. |
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| 作者姓名： | 张睿冲 邓红卫 谢承煜 |
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| 作者单位： | 中南大学 资源与安全工程学院,湖南长沙410083;广西大学资源环境与材料学院,广西南宁530004;中南大学 资源与安全工程学院,湖南长沙,410083;湘潭大学环境与资源学院,湖南湘潭,411105 |
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| 基金项目： | 广西科学研究与技术开发计划项目(桂科攻1598015-5);
广西安全生产科技项目(gxaj201506) |
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| 摘 要： | 采用20 L近球形爆炸实验系统对木薯淀粉粉尘云的爆炸特性开展了实验研究,分别分析了点火延迟时间、粉尘云浓度、喷吹压力等因素对木薯淀粉粉尘云爆炸的影响,揭示了木薯淀粉粉尘云在密闭容器中的爆炸特性。结果表明,随点火延迟时间增加,木薯淀粉粉尘云最大爆炸压力先增大后减小;随粉尘云浓度增大,木薯淀粉粉尘云最大爆炸压力先增大后减小;随喷吹压力增大,木薯淀粉粉尘云最大爆炸压力先增大后减小。木薯淀粉的最大爆炸指数近似值属于St2级,木薯淀粉粉尘的爆炸危险性很大。本研究成果可为预防实际生产中的粉尘爆炸事故提供一定参考依据。
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| 关 键 词： | 木薯淀粉 粉尘云 粉尘爆炸 点火延迟时间 |
| 收稿时间： | 2018-12-28 |
Explosion Properties of Cassava Starch Dust Clouds |
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| ZHANG Rui-chong,DENG Hong-wei,XIE Cheng-yu.Explosion Properties of Cassava Starch Dust Clouds[J].Mining and Metallurgical Engineering,2019,39(3):16-19. |
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| Authors: | ZHANG Rui-chong DENG Hong-wei XIE Cheng-yu |
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| Affiliation: | 1.School of Resources and Safety Engineering, Central South University, Changsha 410083, Hunan, China;
2.College of Resources Environment and Materials, Guangxi University, Nanning 530004, Guangxi, China;
3.College of Resources and Environment, Xiangtan University, Xiangtan 411105, Hunan, China |
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| Abstract: | The explosion characteristics of cassava starch dust cloud were studied by using a 20-L near-spherical explosion experiment system. The influences of ignition delay time, dust cloud concentration and injection pressure on the explosion of cassava starch dust cloud were analyzed, and the explosion characteristics of cassava starch dust cloud in a closed container were explored. Results showed that prolonging the ignition delay time, increasing the dust cloud concentration and increasing the injection pressure all resulted in an initial increase followed by decrease in the maximum blast pressure of cassava starch dust cloud. The approximate value of maximum explosion index of cassava starch was classified to St2 grade, indicating cassava starch had an explosive hazard. This research result can be taken for reference in prevention of dust explosion accident in practical production. |
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| Keywords: | cassava starch dust cloud dust explosion ignition delay time |
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