大连理工大学学报2026，Vol.66Issue(3)：248-256,9.DOI:10.7511/dllgxb202603004
无机盐-SDS复配超细水雾对甲烷-煤尘爆炸的抑制作用
Suppression effect of inorganic salt-SDS compound ultrafine water mist on methane-coal dust explosion
摘要
Abstract
Through the visualization explosion suppression experiment and wettability experiment,the ultrafine water mists produced by three kinds of inorganic salts compounded with sodium dodecyl sulfate(SDS)anionic surfactant are investigated for the dust reduction and explosion suppression effect on methane-coal dust explosion.The influence of the ultrafine water mist of inorganic salt compounded with SDS on explosion pressure and flame structure is explored,and the changing rules of surface tension,coal dust contact angle and sinking time of the solutions of three inorganic salts compounded with SDS,namely,NaCl,MgCl2 and KI,are analysed.The results show that the inorganic salt cation reduces the surface tension of SDS solution by weakening the surface potential and changing the micellar structure,and the Mg2+valence is higher,which reduces the effect more obviously.SDS ultrafine water mist by improving the wettability of coal dust optimises the explosion suppression effect of ultrafine water mist.Inorganic salt-SDS compound ultrafine water mist prolongs the induction period time and reduces the explosion intensity through the synergistic effect of free radical collision chemical inhibition and coal dust agglomeration.Especially under the effect of MgCl2,the flame front appears wrinkled and deformed,showing an orange colour with uneven internal distribution.The study proposes directions and options for the realisation of simultaneous dust reduction and explosion suppression in underground coal mines.关键词
十二烷基硫酸钠(SDS)/无机盐/超细水雾/爆炸行为/煤尘沉降Key words
sodium dodecyl sulfate(SDS)/inorganic salt/ultrafine water mist/explosion behaviour/coal dust deposition分类
矿业与冶金引用本文复制引用
濮明哲,任婧杰,王一非,杨晶晶,毕明树..无机盐-SDS复配超细水雾对甲烷-煤尘爆炸的抑制作用[J].大连理工大学学报,2026,66(3):248-256,9.基金项目
辽宁省科技重大专项(2019JH1/10300002). （2019JH1/10300002）
