中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (2): 81-86.doi: 10.16265/j.cnki.issn1003-3033.2018.02.014

• 安全工程技术科学 • 上一篇    下一篇

硫磺粉尘爆炸特性影响因素试验研究

范健强1, 白建平**2 教授, 赵一姝1 副教授, 袁玮成1, 王越1, 李向富1   

  1. 1 重庆科技学院 安全工程学院,重庆 401331;
    2 重庆市安全生产科学研究院,重庆401331
  • 收稿日期:2017-10-11 修回日期:2017-12-15 出版日期:2018-02-28 发布日期:2020-11-17
  • 通讯作者: ** 白建平(1966—),男,湖北孝感人,博士,教授,主要从事油气安全技术、可燃粉尘爆炸防治技术研究。E-mail:nyzzys@sina.com。
  • 作者简介:范健强 (1990—),男,河南沈丘人,硕士研究生,研究方向为可燃粉尘爆炸防治技术。E-mail:fjqhpu@163.com。
  • 基金资助:
    国家安监总局2017年安全生产重大事故防治关键技术科技项目(Chongqing-0003-2017AQ);重庆科技学院研究生科技创新计划项目(YKJCX1620713,YKJCX1620721);重庆科技学院安全工程学院学生科技创新项目(2015207012)。

Experimental study of factors influencing explosion characteristics of sulfur dust

FAN Jianqiang1, BAI Jianping2, ZHAO Yishu1, YUAN Weicheng1, WANG Yue1, LI Xiangfu1   

  1. 1 College of Safety Engineering, Chongqing University of Science and Technology, Chongqing 401331, China;
    2 Chongqing Academy of Safety Science, Chongqing 401331, China
  • Received:2017-10-11 Revised:2017-12-15 Online:2018-02-28 Published:2020-11-17

摘要: 为了解硫磺粉尘爆炸特性,利用20 L球形爆炸装置开展正交试验和单因素试验,研究粉尘质量浓度、点火能量和粉尘粒径3个因素对硫磺粉尘最大爆炸压力(pmax)和最大爆炸压力上升速率((dp/dt)max)的影响机制。利用SPSS软件对试验数据进行极差分析,并构建回归模型。结果表明:其他条件一定时,pmax和(dp/dt)max均与粉尘质量浓度、点火能量成正相关关系,与粉尘粒径成负相关关系;3个因素的影响程度依次为:粉尘质量浓度>点火能量>粉尘粒径。硫磺颗粒燃烧过程生成的硫磺液滴能造成20 L球罐内的硫磺燃烧不充分,并削弱粉尘粒径对pmax和(dp/dt)max的影响;较高的点火能量可以削弱硫磺液滴的这种不利影响。

关键词: 硫磺粉尘, 粉尘质量浓度, 点火能量, 粉尘粒径, 爆炸特性

Abstract: In order to understand the explosion characteristics of sulfur dust, orthogonal experiments and single factor experiments were performed by using a 20 L spherical explosive device. Effects of the three factors including the dust mass concentration, ignition energy and particle size on the maximum explosion pressure (pmax)and maximum rate of explosion pressure rise((dp/dt)max)of sulfur dust were studied. The software SPSS was used to conduct range analysis of experimental data and construct a regression model. The results show that pmax and (dp/dt)max are positively correlated with the dust mass concentration and ignition energy, and negatively correlated with the particle size when the other conditions are constant, that for the three factors, the effect of dust mass concentration is stronger than that of ignition energy, and the effect of ignition energy is stronger than that of particle size, that the sulfur droplets formed in the process of the combustion of sulfur particles cannot burn completely in the 20 L spherical tank, and the effects of the particle size on pmax and (dp/dt)max are also weakened. A higher ignition energy can counteract the adverse effect of sulfur droplets.

Key words: sulfur dust, dust mass concentration, ignition energy, particle size, explosion characteristics

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