中文摘要：

利用热重红外联用仪对油页岩、碱性木质素二者的单独样和混合样进行常压热解实验,对两者的混合共热解特性以及协同作用进行了分析。结果表明：通过理论值与实验值对比以及RMS指数分析,发现两者仅在高温热解区间存在明显的协同作用。升温速率越小的试样,反应越彻底,质量损失率也最高;反之产生热解滞后现象;两者的混合热解质量损失峰整体都随着升温速率的升高,向高温一侧移动,但整体变化不大。CH4、CO、芳环结构化合物的气体析出浓度与升温速率成正比关系;其他产物均为不规律变化。碱性木质素在热解终温为900℃时的半焦表面存在气相产物扩散未果而形成的鼓泡状小颗粒;而油页岩热解已接近完成,所得半焦未见鼓泡状小颗粒,整体平坦圆滑,存在大量的空隙;随着混合样品中油页岩所占比例的减小,热解所得半焦开始发生破碎现象,孔隙增大,鼓泡状小颗粒分散且形态变小,表面粗糙度降低,半焦表面亮度增加。

英文摘要：

Atmospheric pyrolysis experiments of two individual samples and mixed samples of oil shale and alkaline lignin were performed by thermal gravimetric and infrared spectroscopy. The co-pyrolysis characteristics and the synergistic effect of the two were analyzed. The results show that there is obvious synergistic effect between alkaline lignin and oil shale only in the high temperature pyrolysis interval by comparing the theoretical value with the experimental value and the RMS index. The smaller the heating rate of the sample, the more thorough the reaction, and the mass loss rate was also the highest ; otherwise, the phenomenon of pyrolysis lagged. The mass less peak of mixed pyrolysis of oil shale and alkaline lignin moved to the high temperature side with the heating rate increasing, but little overall changed. The gas release concentration of CH4 , CO and aromatic compound was proportional to the heating rate, and the other products were irregular. Due to the pyrolysis gas phase product of alkaline lignin in the 900 ℃ final temperature diffusion failed, the bubble shaped small particles were formed on the char surface. But the pyrolysis of oil shale was close to completion, there was no bubble shaped small particles on the char surface, the overall smooth, there were a large number of voids in the char. With decrease of the proportion of oil shale in the mixed samples, the breaking phenomenon of semi coke began to occur, porosity increased; the bubble shaped small particles in the surface of semi coke dispersed and its shape became small; the semi coke surface roughness was reduced, the brightness of the surface increased.