TG实验条件对煤氧化燃烧特性的影响分析  

Effect of TG experimental conditions on the oxidative combustion characteristics of coal

作　　者：秦汝祥[1,2] 庞文华[1] 陶远[1] 

机构地区：[1]安徽理工大学能源与安全学院,安徽淮南232001 [2]安徽理工大学煤矿安全高效开采省部共建教育部重点实验室,安徽淮南232001

出　　处：《中国安全生产科学技术》2014年第5期154-158,共5页Journal of Safety Science and Technology

基　　金：国家自然科学基金资助项目(50974003);安徽高校省级自然科学基金资助项目(KJ20Ba096)

摘　　要：为了探讨TG实验过程不同实验条件对煤氧化燃烧特性的影响,采用控制变量法对不同煤样粒度、不同升温速率、不同试样量条件下煤氧化燃烧过程进行了研究。通过TG/DTG曲线上的特征温度点将煤的氧化燃烧过程划分为五个阶段。结果表明:煤样粒度增加、升温速率增大都会使TG曲线向高温侧移动,对应的各特征温度值也都会升高;随煤样量增加,TG曲线在受热分解段及燃烧阶段向低温侧移动,煤样着火点温度T4降低。In order to investigate the effect of different experimental conditions on the oxidative combustion charac -teristics of coal in the process of TG experiment , control variable technology was used to research the oxidative com-bustion process under different size , different heating rate and different sample quantity .The process was divided into five stages according to the characteristic temperature on the TG/DTG curves.The results showed that： with the increase of coal particle size and heating rate , TG curves move to the high-temperature side , each of the corre-sponding characteristic temperature value also increases;with the increase of coal sample quantity , TG curves move to the low-temperature side in thermal decomposition stage and combustion stage , and the coal ignition temperature T4 decreases.

关 键 词：热重分析 粒度 升温速率 试样量 特征温度点 

分 类 号：X936[环境科学与工程—安全科学]