Explosive limits of mixed gases containing CH4, CO and C2H4 in the goaf area

✍ Scribed by Jun DENG; Zhenmin LUO; Xiaochun WU; Yaoyuan HU

• Publisher: Elsevier
• Year: 2010
• Tongue: English
• Weight: 312 KB
• Volume: 20
• Category: Article
• ISSN: 1674-5264
• DOI: 10.1016/s1674-5264(09)60243-x

✦ Synopsis

The explosive gases CO and C 2 H 4 , 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 CH 4 . We have determined some of the parameters of explosive properties of the one-component gases CH 4 , CO and C 2 H 4 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 CH 4 +CO, CH 4 +C 2 H 4 , as a function of the amount of CO, C 2 H 4 and inert flame resisting gases (N 2 , CO 2 ). 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 (N 2 , CO 2 ) 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.