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 ›› 2023, Vol. 42 ›› Issue (12): 1688-1693.

• • 上一篇    下一篇

含茶多酚细水雾抑制甲烷爆炸有效性试验研究

杨克, 杜晓阳, 邢志祥, 纪虹   

  1. （常州大学 安全科学与工程学院，江苏 常州 213164）
  • 出版日期:2023-12-15 发布日期:2023-12-15
  • 作者简介:杨 克(1982- )，男，山西陵川人，常州大学安全科学与工程学院副院长，副教授，博士，主要从事工业过程安全、消防安全、油气储运安全研究，江苏省常州市武进区滆湖中路1号，213164。
  • 基金资助:
    国家自然科学基金项目(52204204)；常州市科技支撑计划（社会发展）（CE20235039）

Experimental study on the effectiveness of water mist containing tea polyphenols in inhibiting methane explosion

Yang Ke, Du Xiaoyang, Xing Zhixiang, Ji Hong   

  1. (School of Safety Science and Engineering, Changzhou University, Jiangsu Changzhou 213164, China)
  • Online:2023-12-15 Published:2023-12-15

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摘要： 为研究含茶多酚添加剂的细水雾对抑制甲烷爆炸的有效性，采用自制的亚克力半封闭管道进行抑爆试验，研究了茶多酚（TP）添加剂浓度变化对火焰传播速度、爆炸超压等参数的影响。结果表明：对体积分数为9.5%的甲烷，相同时间内，茶多酚添加剂质量分数为10%时，细水雾的抑爆性能最为显著，较纯甲烷自由爆炸时火焰传播速度、最大爆炸超压分别下降了34.18%、59.41%；较纯水细水雾分别下降了16.15%、41.01%；茶多酚通过酚羟基消耗H、O等自由基的化学作用及吸热惰化的物理作用协同抑制，阻断了甲烷爆炸的链式反应，从而有效抑制甲烷爆炸。可见，茶多酚作为细水雾添加剂对甲烷爆炸具有良好的抑制效果。

关键词: 茶多酚, 细水雾, 甲烷爆炸, 抑爆机理, 爆炸超压, 火焰传播速度

Abstract: In order to study the effectiveness of ultra fine water mist containing tea polyphenol additive on inhibiting methane explosion, self—made acrylic semi—closed pipe was used for explosion suppression experiment, and the influence of tea polyphenol additive concentration on flame propagation speed, explosion overpressure and other parameters was studied. The results showed that for methane with volume fraction of 9.5%, when the mass fraction of tea polyphenol additive was 10.0%, the explosion suppression performance was the most significant, and the flame propagation velocity and maximum explosion overpressure decreased by 34.86% and 59.41%, respectively, compared with that of pure methane under free explosion. Compared with pure water ultrafine water mist, it decreased by 21.56% and 41.01%, respectively. Through the chemical action of the consumption of free radicals such as H and O by the phenol hydroxyl group and the physical action of endothermic inerting, tea polyphenols can jointly inhibit the chain reaction of methane explosion, thus effectively inhibiting the methane explosion. It can be seen that tea polyphenol as a fine water mist additive has a good inhibition effect on methane explosion.

Key words: tea polyphenols, ultrafine water mist, methane explosion, explosion suppression mechanism, explosion overpressure, flame propagation speed