摘要
利用绝热氧化试验和管式炉程序升温试验,探究了煤矸石氧化升温过程中温度、失重及气体产物演变规律的燃烧特性.结果表明:煤矸石的燃烧过程存在5个特征温度点4个燃烧阶段.根据煤矸石氧化升温进程中O_(2),CO,CH_(4)等标志气体的释放规律,得出矸石在不同燃烧阶段的气体产物的特点.根据温度、气体产物的种类和体积分数的变化判断煤矸石燃烧所处阶段,为自燃煤矸石山内部火区预判与圈定提供依据.
The combustion characteristics of temperature,weight loss and gas product evolution law in the process of coal gangue oxidation and temperature rise were explored using adiabatic oxidation test and tube furnace temperature programmed test.The results show that there are five characteristic temperature points and four combustion stages in the combustion process of coal gangue.According to the release rule of O_(2),CO,CH_(4)and other marker gases in the process of oxidation and temperature rise of coal gangue,the characteristics of gas products of gangue in different combustion stages were obtained.The stage of coal gangue combustion was judged according to the change of temperature,gas product type and volume fraction,which provides the basis for predicting and delineating the internal fire area of spontaneous combustion coal gangue mountain.
作者
董红娟
卢悦
张金山
温磊
袁治国
DONG Hongjuan;LU Yue;ZHANG Jinshan;WEN Lei;YUAN Zhiguo(Minging and Coal School,Inner Mongolia University of Science and Technology,Baotou 014010,China;Survey and Mapping Institute,Inner Mongolia Baotou Steel(Group)Co.,Baotou 014010,China;Guoneng Mengxi Coal Chemical Co.,Ltd.,Ordos 016100,China)
出处
《内蒙古科技大学学报》
CAS
2022年第4期341-344,366,共5页
Journal of Inner Mongolia University of Science and Technology
基金
内蒙古自治区自然科学基金资助项目(2022LHMS05007)
内蒙古自治区高等学校科学研究资助项目(NJZY21383)
关键词
煤矸石自燃
氧化升温
特征温度
燃烧阶段
标志气体
coal gangue spontaneous combustion
temperature rise of oxidation
characteristic
