Research on Explosive Characteristics of Combustible Gas within the Restricted Space in Wells

4th International Conference on Energy Equipment Science and Engineering

Lyu, Shuran^1 ; Wang, Wanqing^1^2 ; Zhang, Yudong^1^2

School of Safety and Environmental Engineering, Capital University of Economics and Business, Beijing

100070, China^1

Information School, Capital University of Economics and Business, Beijing

100070, China^2

关键词: Combustible gas;    Maximum pressure;    Methane combustion;    Methane explosions;    Spherical explosion vessels;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/242/2/022065/pdf
DOI  :  10.1088/1755-1315/242/2/022065

来源: IOP

【 摘 要 】

The explosion of the combustible gas within the restricted space in the city wells will endanger the people's life and fortune. The syncretic gas detector of MX4 and MX6 are used in this study to detect the harmful gas in the well. The result shows that the main harmful gases are mainly CH4, H2S and CO2, and their content range is given. Then the explosion test of the combustible gas is done in the spherical explosion vessel of 20L in volume in the lab, which studies the effect of the content of the methane and CO2 on the explosion maximum pressure and its increase rate. Finally, FLACS code is adopted to study the effect of the inert gas CO2 in the well on effectively restricting the methane combustion and explosive reaction. It is found that CO2 has the restrict effect on the methane explosion.