主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2021, Vol. 40 ›› Issue (6): 801-804.

• • 上一篇    下一篇

HDPE粉尘云最小点火能试验研究

郑秋雨1，刘琳1，刘天奇1，刘意2，韩睿3   

  1. 1. 沈阳航空航天大学安全工程学院，辽宁沈阳110136；2. 中国兵器科学研究院，北京100089；3. 中国航发沈阳黎明航空发动机有限责任公司，辽宁沈阳110043
  • 出版日期:2021-06-15 发布日期:2021-06-15
  • 作者简介:郑秋雨（1982-），男，辽宁沈阳人，沈阳航空航天大学安全工程学院副院长，讲师，博士，主要从事防火防爆研究，辽宁省沈阳市道义经济开发区道义南大街37号，110136。
  • 基金资助:
    辽宁省教育厅科研项目（JYT19038）；辽宁省自然科学基金项目（2020-BS-175）；辽宁省教育厅科学研究项目（L201754）

Experimental investigation of the minimum ignition energy of HDPE dust cloud

ZHENG Qiu-yu1, LIU Lin1, LIU Tian-qi1, LIU Yi2, HAN Rui3   

  1. 1. College of Safety Engineering, Shenyang Aerospace University, Liaoning Shenyang 110136, China; 2. China Research and Development Academy of Machinery Equipment, Beijing 100089, China; 3. AECC Shenyang Liming Aero- Engine Co.，Ltd., Liaoning Shenyang 110043, China
  • Online:2021-06-15 Published:2021-06-15

摘要： 为研究高密度聚乙烯(HDPE)粉尘云燃爆的敏感性参数，采用粉尘云最小点火能（MIE）试验装置对HDPE 粉尘进行试验研究。首先研究3 个单一因素(粉尘粒径、粉尘云质量浓度和喷粉压力)对MIE 的影响，然后对一定条件下不同质量浓度的HDPE 粉尘云在哈特曼管中燃烧的火焰传播行为进行分析，最后采用正交试验法分析了多因素对MIE 的影响程度。试验结果表明：随着HDPE 粉尘粒径从25 μm 增加到120 μm，MIE 逐渐增大；随着HDPE 粉尘云质量浓度的增加，MIE 先降低后缓慢上升；随着喷粉压力从50 kPa 增加到400 kPa，MIE 呈现先降低后升高的趋势；粉尘云的质量浓度越大，其在哈特曼管中燃爆的剧烈程度越强，同时燃爆的延续时间也越长；粉尘粒径对MIE 的影响最为显著。

关键词: HDPE, 最小点火能, 正交试验, 粉尘粒径, 粉尘云, 质量浓度, 喷粉压力

Abstract: In order to study the explosion sensitivity parameters of high density polyethylene (HDPE) dust cloud, experimental research on HDPE dust was carried out. The MIE of HDPE dust cloud was tested by the minimum ignition energy test device. Firstly, the effects of three single factors (dust particle size, dust cloud mass concentration and dispersion pressure) on MIE were studied, and then the flame propagation behavior of HDPE dust clouds with different mass concentrations burning in Hartmann tube under certain conditions was analyzed. Finally, orthogonal experiment method was used to analyze the influence of multiple factors on MIE. The experimental results showed that: with the increase of dust particle size from 25 μm to 120 μm, the MIE increases gradually; with the increase of HDPE dust cloud mass concentration, the MIE decreases and then slowly rises. The MIE decreases first and then increases when dispersion pressure increases from 50 kPa to 400 kPa. The greater the mass concentration, the stronger the degree of intense combustion in the Hartmann tube, and the longer the presence time of the explosion. The dust particle size had the most significant influence on MIE.

Key words: high density polyethylene, the minimum ignition energy, orthogonal experiment, dust particle size, dust cloud mass concentration, dispersion pressure