Study on the rules and mechanism of index gases generation during the process of spontaneous combustion of coal

摘要：

The macroscopical characters of index gases generation during the process of spontaneous combustion of coal are obtained with the experiment of programmed temperature oxidization.It is found that different index gas appears under different temperatures for a certain coal sample;and a certain index gas appears in different temperature for different coal sample which has different oxidation ability or tendency toward spontaneous combustion;and the concentrations of index gases always rise when temperature rises.From the analyzing of the change rules of coals microstructure,experimental activation energy and the concentration of free radicals,and based on the theories of free radicals reaction and the gradual self-activation reaction of spontaneous combustion of coal,the mechanism which can scientifically explain the characters of index gases generation is advanced.Different active structures need different temperature to activate when coal is oxidized in low-temperature.At the same time,new free radicals broken away from main structure of coal interreact with each other or oxygen and generate all kind of index gases.

关键词： Spontaneous combustion of coal Index gases Activation reaction Change of structure Free-radicals reaction

作者: Lu Wei Hu Qianting Dai Guanglong

作者单位: Chongqing Branch,China coal research Institute,Chongqing 400037 China;Anhui University of Science & Chongqing Branch,China coal research Institute,Chongqing 400037,China Anhui University of Science & Technology,Huainan 232001,China

会议类型: 国际会议

会议名称: The 2007 International Conference on Mine Hazards Prevention and Control(2007矿山灾害预防与控制国际学术会议)

会议地点: 青岛

会议语种:英文

页码: 174-180

在线出版日期: 2007-10-17（万方平台首次上网日期，不代表论文的发表时间）