SiO_(2)复合聚磷酸铵对掺氢甲烷爆炸火焰传播的抑制研究  

Study on the suppression of hydrogen-methane explosion flame propagation by SiO_(2)-composite ammonium polyphosphate

作　　者：焦一飞 熊晓曼 任昊 米红甫 Jiao Yifei;Xiong Xiaoman;Ren Hao;Mi Hongfu(State Grid Sichuan Economic Research Institute,Chengdu Sichuan 610041,China;Chongqing University of Science and Technology,Chongqing 401331,China)

机构地区：[1]国网四川省电力公司经济技术研究院,四川成都610041 [2]重庆科技大学,重庆401331

出　　处：《消防科学与技术》2025年第3期299-305,共7页Fire Science and Technology

基　　金：国网四川省电力公司经济技术研究院科技项目(B7199623K004)。

摘　　要：本文通过试验方法研究了二氧化硅复合聚磷酸铵添加剂对预混爆炸传播的抑制效果。预混气体燃料掺氢比为20%,复合抑爆剂的质量浓度为0.5 g/L,共设置了3种质量配比。试验结果表明,复合添加剂对掺氢甲烷爆炸传播具有显著的抑制效果,能够在爆炸初期限制火焰的体积膨胀,在爆炸发展的中后期吸热分解,降低爆炸火焰的热释放量,以及阻碍火焰与燃料之间的热量传递,通过分解产物破坏原爆炸系统的链式反应进程。爆炸火焰传播速度在复合抑爆剂的影响下最高降低91%,极大程度衰减了爆炸压力的积累和释放,爆炸发展过程被有效抑制。In this paper,the inhibitory effect of silica composite ammonium polyphosphate additives on the propagation of premixed explosions is investigated by experimental methods.The hydrogen blending ratio for premixed gas fuels is 20%.The concentration of the compound inhibitor is 0.5 g/L,with 3 kinds of mass ratios.The experimental results show that the composite additive has a significant inhibitory effect on the propagation of hydrogen-methane explosions and it can limit the expansion of the explosion flame in the early stage.The additive absorbs heat and decomposes during the middle and late stages of the explosion development,reducing the amount of heat released from the explosion flame,as well as impeding the transfer of heat between the flame and the fuel,and disrupting the chain reaction process of the original explosion system by the decomposition products.The flame speed under the influence of composite explosion suppressant decreased by a maximum of 91%,greatly attenuating the accumulation and release of pressure.The explosion development process is effectively limited.

关 键 词：预混火焰 掺氢甲烷 抑爆 火焰衰减 

分 类 号：X932[环境科学与工程—安全科学] TQ511[化学工程]