摘要
利用显示差热量热法(DSC)研究了桦甸大层子四层油页岩及500℃半焦热量的转移过程,分析了升温速率和颗粒粒度对DSC曲线的影响。研究发现油页岩在燃烧的过程中出现四个峰分别为干燥段(100℃-300℃)和碳酸盐分解(700℃-800℃)的吸热峰、挥发分(300℃-400℃)和焦炭燃烧(500℃-600℃)的放热峰;而500℃半焦仅有难于挥发的有机质和焦炭的放热峰以及碳酸盐的吸热峰。随着升温速率和粒径的增大,燃烧时峰值向高温区温度移动。为油页岩及半焦的燃烧奠定一定的理论基础。
The method of Differential Scanning Calorimetry （DSC） is used to study the heat of combustion process of Huadian oil shale and 500℃ semi-coke and to analyze the influence of heating rate and the size of particles on DSC. It is observed that the combustion process of oil shale has four stages including the endotherpeaks of water drying in the range of 100 - 300 ℃ and decomposition of carbonates at between 700 and 800℃. It also includes two exothermic peak of the combustion of volatiles at 300 - 400 ℃ and char residues at 500 - 600 ℃. But 500℃ semi-coke has exothermic peak of difficult volatilization of organic matter and char residues and endothermic peaks of carbonates decomposition. It shows that the temperature of exothermic peak of the combustion with the heating rate and particle size distribution increasing. These conclusions provide a theoretical foundation for fresher research on oil shale＇s combustion.
出处
《东北电力大学学报》
2008年第6期105-108,共4页
Journal of Northeast Electric Power University
关键词
油页岩
半焦
燃烧
DSC
Oil shale
Semi-coke
Combustion
DSC
