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 ›› 2020, Vol. 39 ›› Issue (6): 746-749.

• • 上一篇    下一篇

多孔陶瓷结构抑制甲烷爆炸实验研究

段玉龙1,2 ，王硕1,2 ，王文和1,2 ，邓智迅3 ，赖帆3 ，张晏华3   

  1. （1. 重庆科技学院，重庆 401331；2. 重庆科技学院 油气化工过程安全多尺度研究中心，重庆 401331；3. 重庆市凤鸣山中学,重庆 400037）
  • 收稿日期:2020-02-12 出版日期:2020-06-15 发布日期:2020-06-15
  • 作者简介:段玉龙（1982-），男，重庆科技学院安全工程学院副研究员，博士，主要从事火灾及瓦斯爆炸研究，重庆市沙坪坝区大学城东路 20 号，401331。
  • 基金资助:

    重庆市自然科学基金面上项目（CSTC2019JCYJ-MSXMX0324）；重庆市教委科学技术研究项目（KJQN201801517）；重庆科技学院校内科研基金项目(CK2017ZKYB001)；西安近代化学研究所开放合作创新基金项目(2018YFC08209500)

Experimental study on suppression of methane gas explosion by porous ceramic

DUAN Yu-long1,2 ，WANG Shuo1,2 ，WANG Wen-he1,2 ，DENG Zhi-xun3 ，LAI Fan3 ，ZHANG Yan-hua3   

  1. (1. College of Safety Engineering, Chongqing University of Science & Technology, Chongqing 401331, China; 2.Center for Multiscale Process Safety Research in Oil & Gas, Chongqing 401331，China;3.Chongqing Fengmingshan High School, Chongqing 400037，China.)
  • Received:2020-02-12 Online:2020-06-15 Published:2020-06-15

摘要： 利用自主搭建的实验平台，对距离点火源 30、50、70 cm 和厚度为 2、4、6 cm 的多孔陶瓷抑制甲烷爆炸效果展开实验研究。结果表明，多孔陶瓷可延长层流火焰的传播时间，减缓火焰由层流向湍流的转变。爆炸火焰接触多孔陶瓷时发生淬熄，导致爆炸反应终止。多孔陶瓷与点火源之间距离的增加或多孔陶瓷厚度增加时，火焰锋面速度下降，但材料厚度对火焰锋面速度的影响效果相比于放置位置更加明显。超压上升速率随着多孔陶瓷与点火源距离的增加而降低，其与点火源距离较近即放置于 30 cm 处时，对超压的衰减效果最佳。增加多孔陶瓷的厚度时，甲烷爆炸超压峰值降低。

关键词: 气体爆炸, 多孔陶瓷, 火焰淬熄, 抑爆

Abstract: Experimental study on the methane explosion effect of porous ceramics with distance of 30, 50, 70 cm from the ignition source and thickness of 2, 4 and 6 cm was carried out through an experimental platform built independently. The results showed that porous ceramics can prolong the propagation time of laminar flame and slow the transition of flame from laminar to turbulent. Quenching occurs when the explosive flame contacts the porous ceramic, and resulting in the termination of the explosive reaction. As the distance between porous ceramics and the ignition source increases or the thickness of porous ceramics increases, the flame front speed decreases, but the effect of thickness on the flame front speed is more obvious than that of the placement. The rate of overpressure rise decreases with the increase of distance between the porous ceramic and the ignition source. When the distance between the porous ceramic and the ignition source is 30 cm, the attenuation effect of overpressure is the best. The peak pressure of methane explosion overpressure decreases with the increase of thickness of porous ceramics.

Key words: gas explosion, porous ceramics, flame quench, explosion suppression

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