CO Gas Generating of Coal for Low O2 Concentration in N2 or CO2 Rich Atmosphere by Rapid Heating
In this study, experiments on generating of CO gas from heated coal samples have been carried out by controlling the atmospheric condition in low O2 concentration in considering sealed goaf areas at underground coal mines. The laser beam was used to make coal temperature over 60 °C within few minutes in order to minimize coal oxidation in heating process. The O2 concentration in atmosphere is controlled by injecting Air, pure N2, pure CO2 or N2-CO2 mixing gases to simulate a sealed area with an inert gas injected. The results of coal weight reduction ratio and CO gas generation by injecting the mixing gases of 80％ N2 and 20％ CO2, close to flue gas ratio, have showed similar characteristics with that of N2 gas injection. In addition, the generated CO gas concentration was mainly dependent on coal temperature and O2 concentration.
Laser beam Inert gas Goaf area CO gas generation Spontaneous combustion
LI Zhigang ZHANG Xiaoming Kyuro SASAKI Yuichi SUGAI WANG Jiren
Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University, Fukuoka 819-03 College of Resources and Environmental Engineering, Liaoning Technical University, Fuxin 123000, Chi
国际会议
2010 International Conference on Mine Hazards Prevention and Control(第二届矿山灾害预防与控制国际学术会议 ICMHPC)
青岛
英文
678-684
2010-10-15（万方平台首次上网日期，不代表论文的发表时间）