1. College of Electrical and Power Engineering,Taiyuan University of Technology,Taiyuan　 030024,China;2. Department of Thermal Engineering,Tsinghua University,Beijing　 100084,China

利用管式炉对来自桦甸、龙口和依兰的油页岩进行450~600℃干馏处理,并运用热重分析仪(TGA)在30℃/min的升温速率条件下对油页岩半焦进行测试,考察了干馏温度、干馏时间和油页岩产地对油页岩半焦的组成、发热量和燃烧性能的影响,并计算了各样品的燃烧特性指数。结果表明:干馏前后发热量不一定会产生明显降低,依兰半焦的发热量与油页岩相比基本不变。干馏温度越高,半焦挥发分明显降低,停留时间对半焦成分和燃烧特性的影响也越小。随着干馏程度的升高,着火温度Ti增大,燃烧性能变差,燃尽温度基本不变。样品重量一般在350℃左右开始明显减小,在500℃左右质量变化速率逐渐减小,在700℃再次产生明显失重。从页岩油的产率和半焦的燃烧特性角度综合考虑,过长的干馏时间经济性变差。

The aim of this project is to study the combustion characteristics of oil shale semi-coke. The oil shale sam-ples from Huadian, Longkou and Yilan were pyrolyzed in a tube furnace at the temperature between 450 ℃ and 600 ℃ ,then the semi-coke samples were analysed by thermogravimetric analyser at the heating rate of 30 ℃ / min. The influence of pyrolysis temperature and pyrolysis time on composition and calorific value were investigated. The re-sults show that a longer pyrolysis time has no obvious effect on composition and calorific value especially at higher temperature. After pyrolysis,the ash content increases while the volatile content deceases,and the calorific value chan-ges differently according to the origin. Higher temperature makes the ignite point Ti increase and the combustion char-acteristics of semi-coke become worse. The mass loss starts at 350 ℃ ,and decreases at 500 ℃ ,and there is an in-crease at 700 ℃ .

国家基础研究发展计划(973)资助项目(2014CB744305)；

Li Xiaodong,Fan Baoguo,Jin Yan,et al. Experimental study on combustion characteristics of oil shale semi-coke[J]. Journal of China Coal Society,2016,41(10):2471-2476.