油砂燃烧过程的TG-DSC分析

采用热重分析仪，对印度尼西亚油砂进行了燃烧特性试验。由热重DTG曲线可知，油砂燃烧过程分为4个阶段：燃烧低温、中温、过渡及高温段。采用“非对称高斯多峰拟合法”对油砂燃烧放热峰进行分离拟合，将实验DSC曲线复杂峰分离成为多个高斯函数峰。并结合Malek法确定了油砂燃烧时其伪组分的最概然机理函数。为油砂的有效开发与经济利用提供了理论依据。

Investigation of oil sand combustion by simultaneous thermal analyzer

Experiments on combustion of Indonesian oil sands was conducted on thermogravimetric analyzer. The obtained DTG curves revealed that combustion reactions occurred at four different stages in all the samples: low-temperature，medium-temperature，transitional and high-temperature section. The experimental DSC peaks were effectively separated into multiple Gaussian peaks. At last，the most probable kinetic mechanism functions of oil sand pseudo-components were determined according to the Malek’s method，which provided theoretical foundation for further effective exploitation and economical application of oil sands.