CF_(3)H和CO_(2)抑制CH_(4)爆炸实验研究  

Study on suppression of CH_(4) explosion by CF_(3)H and CO_(2)

作　　者：白洁琪 白纪成 梁运涛[1] 王琳[1,2,3] 宋双林 田富超[1,2,3] BAI Jieqi;BAI Jicheng;LIANG Yuntao;WANG Lin;SONG Shuanglin;TIAN Fuchao(China Coal Research Institute,Beijing 100013,China;China Coal Technology&Engineering Group Shenyang Research Institute,Fushun 113122,China;State Key Laboratory of Coal Mine Safety Technology,Fushun 113122,China;Pingdingshan Tian’an Coal Mining Co.,Ltd,Pingdingshan 467000,China)

机构地区：[1]煤炭科学研究总院,北京100013 [2]中煤科工集团沈阳研究院有限公司,辽宁抚顺113122 [3]煤矿安全技术国家重点实验室,辽宁抚顺113122 [4]平顶山天安煤业股份有限公司,河南平顶山467000

出　　处：《煤矿安全》2024年第5期122-130,共9页Safety in Coal Mines

基　　金：国家自然科学基金面上资助项目(52174229,52174230)。

摘　　要：为对比研究CF_(3)H和CO_(2)对CH_(4)爆炸特性的抑制效果,使用20 L球型爆炸压力测试系统分别测量对比2种抑制剂对CH_(4)在空气中爆炸极限范围的影响;研究了不同体积分数的2种抑制剂对CH_(4)体积分数9.5%爆炸压力参数影响,分析了2种抑制剂针对CH_(4)在空气中爆炸的爆炸三角形。结果表明:CF_(3)H和CO_(2)均能缩小CH_(4)在空气中的爆炸极限范围,抑制CH_(4)至失爆所需CF_(3)H和CO_(2)体积分数分别为12.5%和21.5%;对比抑制CH_(4)体积分数9.5%的爆炸参数(反应峰值压力和升压速率),10%CF_(3)H的抑爆能力是等量CO_(2)的1.95倍和1.3倍,但是低于体积分数4%的CF_(3)H单独使用时对CH_(4)爆炸存在微弱的促进作用;2种抑制剂作用下的爆炸三角形显示CF_(3)H抑制下的可爆区域面积小于CO_(2),安全区域内CF_(3)H的窒息比是CO_(2)的57%。To compare the inhibitory effects of HFC-23(CF_(3)H)and CO_(2) on methane explosion characteristics,a 20 L spherical explosion pressure testing system was used to measure the effects of two inhibitors on the explosion limit range of CH_(4) in air.The effects of two inhibitors with different volume fractions on the explosion pressure parameters of 9.5%volume fraction CH_(4) were studied,and the explosion suppression triangles of the two inhibitors for CH_(4) explosion in air were analyzed.The results indicate that both CF_(3)H and CO_(2) can reduce the explosion limit range of methane in air,and the required volume fractions of CF_(3)H and CO_(2) to suppress CH_(4) detonation are 12.5%and 21.5%,respectively.Compared the explosion suppression parameters(peak reaction pressure and pressure rise rate)that inhibit CH_(4) by volume fraction CH_(4),the explosion suppression ability of 10%CF_(3)H is 1.95 times and 1.3 times that of an equal amount of 9.5%CO_(2),but CF_(3)H with volume fraction of 4%has a weak promotion effect on the explosion of CH_(4) when it used alone.The explosion suppression triangle of the two inhibitors shows that the explosive area under CF_(3)H suppression is smaller than CO_(2),and the suffocation ratio of CF_(3)H in the safe area is 57%of CO_(2).

关 键 词：CH_(4)爆炸 瓦斯爆炸 CO_(2) CF_(3)H 爆炸极限 抑爆剂 爆炸压力 爆炸三角形 

分 类 号：TD752.2[矿业工程—矿井通风与安全]