【摘要】 在热重装置上考察了2.22—12.34K/min间五种升温速率下茂名页岩的热分解过程,结果表明,升温速率的改变对于热解转化率曲线及失重速率曲线有明显的影响。热重数据的动力学处理显示,茂名油页岩的热分解过程系一级反应。与前人多用一个总包一级反应描述页岩的热分解过程不同,本文在三个温度阶段(即大致在385—398℃之前,385—490℃及443—490℃之后)采用三个不同的一级动力学方程予以描述,并确定了各升温速率下相应的动力学参数。升温速率于2.22—12.34K/min范围内的变化对动力学参数无显著影响。更多还原

【Abstract】 The pyrolysis of Maoming oil shale was investigated by using thcrmogravimetric analyzer at five heating rates (2.22-12.34 K/min).It was found that variation in heating rate obviously affects the shape of conversion curves and weight loss curves during pyrolysis. By processing thermogravimetric data it was concluded that pyrolysis of Maoming oil shale is a first order reaction. The Maoming oil shale pyrolysis is described in this paper by three first order kinetic equations in each of three different temperature regions (namely below 385-398℃, 385-490℃ and above 443-490℃) instead of a universal first order rate equation as most investigators did.By means of least square curve fitting of pyrolysis data, the corresponding kinetic parameters at the five heating rates were determined. The variation in heating rate mentioned above has no obvious effect on the kinetic parameters.更多还原