油页岩低温干馏不同阶段的产物特征

对东北地区典型盆地油页岩样品进行分阶段低温干馏加温实验,分析油页岩的最佳产油区间和最佳加温方式。低温干馏产物(页岩油、半焦、水分、气体损失物)的变化规律表明低品质油页岩在整个低温干馏过程中出油率缓慢递增,因此可以采用传统的低温干馏加温方式。中等、优等品质油页岩在Ⅰ-Ⅱ阶段出油率变化不明显,Ⅲ-Ⅳ阶段出油率增加最快,绝大多数油页岩在Ⅵ阶段出油率几乎不再发生变化,因此中等、优等品质油页岩的低温干馏可以采用Ⅴ阶段加温方式,该加温方式的提出既可获得较高含量的页岩油,又可提高半焦的附加利用值。

Characteristics of grading low temperature carbonization products of oil shale

Based on the grading low temperature carbonization of oil shale from typical basins in Northeast China，the authors aim to obtain the best interval of expelling hydrocarbon and the best heating way． According to changes of low temperature carbonization products (shale oil，semi- coke，water，gas loss)，the results show that oil yielding of oil shale with low quality increases slowly，hence we adopt traditional heating way． Oil yielding of oil shale with medium or high quality has no obvious change during Ⅰ-Ⅱ stages，while it has significant increases during Ⅲ- Ⅳ stages and almost keeps unchanged during Ⅵ stage，thus，the heating way of Ⅴ stage can be adopted，which will obtain high content of shale oil and can improve the semi- coke utilization value．