Explosive limits of mixed gases containing CH_4,CO and C_2H_4 in the goaf area  

作　　者：DENG Jun LUO Zhenmin WU Xiaochun HU Yaoyuan 

机构地区：[1]College of Energy Resources, Xi' an University of Science and Technology, Xi 'an 710054, China [2]Hangzhou Fire Department, Hangzhou 310006, China [3]Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, China

出　　处：《Mining Science and Technology》2010年第4期557-561,共5页矿业科学技术（英文版）

基　　金：The financial supports from the National Natural Science Foundation of China (No.50874088);the Changjiang Scholars and Innovative Research Team in University (No.IRT0856)

摘　　要：The explosive gases CO and C2H4, released mainly flammable gases during the process of coal self-ignition, are of the most important ingredients of the multi-component gases in goal areas, along with CH4. We have determined some of the parame- ters of explosive properties of the one-component gases CH4, CO and C2H4 using an explosive trial device of polybasic explosive gas mixtures and emphasized particularly the effect on the limits of explosive concentration of the binary explosive mixed gases CH4＋CO, CH4＋C2H4, as a function of the amount of CO, C2H4 and inert flame resisting gases （N2, CO2）. The experimental results show that the effect of inert gases on the explosive limits of mixed gases, given the property of explosive gas, is obvious： the inert gases （N2, CO2） possess some inhibitory effects on the explosion of the multi-component explosive gas mixtures. The results will provide some experimental support to suppress the occurrence of the gas explosions in goaf areas and provide some directions for designing explosion-proof electric equipment and fire arresters.The explosive gases CO and C2H4, released mainly flammable gases during the process of coal self-ignition, are of the most important ingredients of the multi-component gases in goaf areas, along with CH4. We have determined some of the parameters of explosive properties of the one-component gases CH4, CO and C2H4 using an explosive trial device of polybasic explosive gas mixtures and emphasized particularly the effect on the limits of explosive concentration of the binary explosive mixed gases CH4+CO, CH4+C2H4, as a function of the amount of CO, C2H4 and inert flame resisting gases (N2, CO2). The experimental results show that the effect of inert gases on the explosive limits of mixed gases, given the property of explosive gas, is obvious: the inert gases (N2, CO2) possess some inhibitory effects on the explosion of the multi-component explosive gas mixtures. The results will provide some experimental support to suppress the occurrence of the gas explosions in goaf areas and provide some directions for designing explosion-proof electric equipment and fire arresters.

关 键 词：gob indication gas of self-ignition GAS concentration explosive limits 

分 类 号：TQ116.3[化学工程—无机化工] X928.7[环境科学与工程—安全科学]