NiP@Fe-SBA-15抑爆剂的制备及对PP粉尘爆燃火焰的抑制机理

王菲; 韩金; 陈金射; 陈海燕; 张延松; 羊阳; 张阳; 朱玉镇

doi:10.11883/bzycj-2024-0434

NiP@Fe-SBA-15抑爆剂的制备及对PP粉尘爆燃火焰的抑制机理

doi: 10.11883/bzycj-2024-0434

王菲^1,,
韩金¹,
陈金射^{1, 2, 3, ,},
陈海燕^{1, 2, 3},
张延松^{1, 2, 3},
羊阳¹,
张阳⁴,
朱玉镇⁵

1.
山东科技大学安全与环境工程学院，山东青岛 266590
2.
山东科技大学矿山灾害预防控制省部共建国家重点实验室培育基地，山东青岛 266590
3.
青岛市生产安全火灾事故智能控制工程中心，山东青岛 266590
4.
山东鲁轻安全评价技术有限公司，山东济南 250101
5.
中国中化正和集团股份有限公司，山东东营 257300

基金项目: 国家自然科学基金（52374215，51974179）

详细信息

作者简介:
王　菲（1999－　），女，硕士研究生，wangf9903@163.com

通讯作者:
陈金射（1985－　），男，博士，副教授，skd1643@sdust.edu.cn

中图分类号: O383; X932
计量
- 文章访问数: 128
- HTML全文浏览量: 10
- PDF下载量: 14
- 被引次数: 0
出版历程
- 收稿日期: 2024-11-04
- 修回日期: 2025-01-15
- 网络出版日期: 2025-01-16

Preparation of NiP@Fe-SBA-15 suppressant and its inhibition mechanism on PP dust deflagration flames

WANG Fei^1
,,
HAN Jin¹,
CHEN Jinshe^{1, 2, 3
, ,},
CHEN Haiyan^{1, 2, 3},
ZHANG Yansong^{1, 2, 3},
YANG Yang¹,
ZHANG Yang⁴,
ZHU Yuzhen⁵

1.
College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, China
2.
Mine Disaster Prevention and Control-Ministry of State Key Laboratory Breeding Base, Shandong University of Science and Technology, Qingdao 266590, Shandong, China
3.
Qingdao Intelligent Control Engineering Center for Production Safety Fire Accident, Qingdao 266590, Shandong , China
4.
Shandong Luqing Safety Assessment Technology Co., Ltd., Jinan 250101, Shandong, China
5.
Sinochem Zhenghe Group Co., Ltd., Dongying 257300, Shandong, China

摘要

摘要: 抑爆剂在防止粉尘爆炸事故中起着至关重要的作用。通过原位合成方法制备了一种新型的NiP@Fe-SBA-15抑爆剂，采用哈特曼管道爆炸测试系统，对爆燃火焰的传播行为进行实验研究，测定NiP@Fe-SBA-15抑爆剂对聚丙烯（PP）爆炸火焰的抑制作用，以及添加不同比例的NiP@Fe-SBA-15抑爆剂对PP爆炸火焰的抑制效果。实验结果表明：NiP@Fe-SBA-15抑爆剂能够显著降低PP粉尘爆燃火焰的温度和燃烧速度，当添加质量分数为70%的NiP@Fe-SBA-15时，基本实现了对PP爆燃火焰的高效抑制。此外，结合爆炸产物的实验分析结果，提出了NiP@Fe-SBA-15对PP粉尘爆燃的物理和化学抑制机制。
- PP粉尘 /
- NiP@Fe-SBA-15 /
- 原位合成 /
- 抑爆机理
Abstract: Polypropylene (PP) is widely utilized in industrial production, yet PP dust generated during its production and transportation can form explosive dust clouds, leading to severe dust explosion accidents that threaten personnel and equipment safety. To address this issue, a novel explosion suppressant, NiP@Fe-SBA-15, was synthesized to inhibit the propagation of PP dust combustion flames. The synthesis involved modifying SBA-15 mesoporous silica with Fe ions and subsequently loading NiP, resulting in a composite powder with uniformly dispersed active components and a well-preserved mesoporous structure. Characterization via SEM-Mapping and N2 adsorption-desorption experiments revealed that NiP@Fe-SBA-15 maintains a high specific surface area, exhibits a regulated pore structure, and shows no significant particle agglomeration. The Hartman tube explosive testing system was employed to evaluate the effect of NiP@Fe-SBA-15 on PP dust deflagration. Results indicated that as the NiP@Fe-SBA-15 additive increased, the flame propagation speed, brightness, and flame length of PP deflagration decreased significantly, with flame propagation almost completely inhibited at a suppressant dosage of 70 wt%. The dual explosion suppression mechanism of NiP@Fe-SBA-15 was analyzed. Physically, NiP@Fe-SBA-15 occupies reaction space, reducing oxygen and combustible volatile concentrations, while the SBA-15 molecular sieve, exposed by thermal decomposition of the suppressant, absorbs heat and forms a physical barrier, thereby reducing combustion intensity. Chemically, NiP decomposition releases Ni· and P· radicals that consume key free radicals (H·, O·, OH·) in combustion reactions, interrupting explosion chain reactions. Meanwhile, Fe-based species rapidly oxidize to Fe3O4, reducing oxygen availability and further weakening combustion intensity. In summary, NiP@Fe-SBA-15 was proven to be an effective explosion suppressant for PP dust explosions, reducing combustion intensity through combined physicochemical synergies. This research provides a new approach to enhancing polypropylene industry safety. Future work will focus on optimizing the industrial application of NiP@Fe-SBA-15 explosion suppressants while addressing cost, environmental sustainability, and stability issues to further advance dust explosion prevention technology.
- PP dust /
- NiP@Fe-SBA-15 /
- in situ synthesis /
- explosion suppression mechanism

HTML全文

图 1 哈特曼管道爆炸测试系统示意图

Figure 1. Schematic diagram of the Hartmann tube explosion testing system

1. Control valve ignition generator; 2. Quartz glass tube; 3. Electrode; 4. High-speed camera; 5. Computer; 6. Solenoid valve; 7. Air storage chamber; 8. Barometer 1; 9. Intake valve 1; 10. Barometer 2; 11. Intake valve 2; 12. High-pressure air tank

下载: 全尺寸图片幻灯片

图 2 PP粉尘粒度分布图及SEM图

Figure 2. PP dust size distribution diagram and SEM diagram

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图 3 NiP@Fe-SBA-15的SEM-Mapping测试

Figure 3. SEM Mapping of NiP@Fe-SBA-15

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图 4 SBA-15和NiP@Fe-SBA-15的粒径分布

Figure 4. Particle size distribution of SBA-15 and NiP@Fe-SBA-15

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图 5 NiP@Fe-SBA-15的 N₂吸附-脱附等温曲线及孔径分布图

Figure 5. Isothermal curve of N₂ adsorption-desorption and pore size distribution of NiP@Fe-SBA-15

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图 6 不同浓度抑爆粉体作用下400 g/m³PP粉尘爆炸火焰结构

Figure 6. Flame structure of 400 g/m³ PP dust explosion with different concentrations of explosion suppression powder

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图 7 SBA-15及NiP@Fe-SBA-15抑爆剂对PP粉尘爆燃火焰传播抑制性能对比

Figure 7. Comparison of inhibition properties of SBA-15 and NiP@Fe-SBA-15 on deflagrant flame propagation of PP dust

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图 8 PP粉尘与抑爆剂混合物的火焰前沿位置

Figure 8. Flame front position of mixture of PP dust and explosion suppressant

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图 9 不同浓度抑爆剂粉体对PP粉尘火焰平均传播速度的影响

Figure 9. Effect of explosion suppressant powder concentration on the average flame propagation velocity of PP dust

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图 10 PP、PP产物、抑爆剂及混合爆炸产物的FTIR图像

Figure 10. FTIR images of PP, PP products, explosion suppressors and mixed explosive products

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图 11 添加抑爆剂前PP爆炸产物SEM图

Figure 11. SEM Image of PP Explosion Products Before Adding Explosion Suppressant

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图 12 添加抑爆剂后爆炸产物SEM图

Figure 12. SEM image of explosion products after adding explosion suppressant

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图 13 NiP@Fe-SBA-15对PP粉尘爆炸的抑制机理图

Figure 13. Schematic diagram of the inhibition mechanism of NiP@Fe-SBA-15 on PP dust explosion

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表 1 NiP@Fe-SBA-15的结构参数

Table 1. Structural parameters of NiP@Fe-SBA-15

材料比表面积/(m²·g⁻¹) 孔容/(mL·g⁻¹) 孔径/nm

NiP@Fe-SBA-15 262.5751 0.3594 4.6823

下载: 导出CSV

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