【摘要】 利用热重分析仪对油页岩半焦热解特性进行了研究.综合考虑制取半焦所获得的页岩油品质、半焦成分、发热量和循环流化床设计,认为干馏温度介于500~600℃为宜;干馏度对半焦热解初析温度和低温段热解过程有影响,但对高温段热解影响不明显,高温干馏所制取的半焦其热解过程包含于低温所制取的半焦热解过程中;随升温速率的提高,相同温度下的半焦热解度降低,当升温速率超过40℃.min-1后,升温速率对半焦热解过程影响不大;最后采用Coasts法计算了油页岩半焦热解动力学参数,计算结果可供数值仿真和工程设计参考.更多还原

【Abstract】 The pyrolysis behavior of oil shale semi-coke was studied with the thermogravimetic analyzer.Retorting temperature of 500—600℃ was recommended after quality of shale oil, content and calorific value of semi-coke and design of circulating fluidized bed were comprehensively considered.Retorting degree influenced the start temperature of mass loss and pyrolysis process at low-temperature stage, but had little effect on pyrolysis at high-temperature stage.Pyrolysis process of fuel semi-coke made at a higher distillation temperature could be seen in that of fuel semi-coke made at a lower distillation temperature. Pyrolysis degree of semi-coke would decrease at the same temperature with heat-up rate increasing.However, pyrolysis process of semi-coke would hardly be affected by heat-up rate after heat-up rate was above 40℃·min -1 .Pyrolysis kinetic parameters of semi-coke were calculated with the Coasts method and the results might be referred to in simulation calculation and engineering design.更多还原