煤与生物质共气化可实现煤及生物质资源的清洁高效利用，但碱金属挥发带来的腐蚀问题和气相焦油冷凝带来的管道堵塞问题严重制约共气化技术的开发和应用。为此，本项目拟将共气化过程中碱金属捕集与焦油原位催化重整结合，以具有高效碱金属吸附性能的氧化铝为载体，制备镍基催化剂，改善其原位催化焦油重整反应性能，同步实现碱金属捕集及焦油催化重整转化。利用可视化固定床-激光诱导击穿光谱联用技术研究过程参数对碱金属释放及焦油产率的影响规律。通过在反应器内加装隔板内构件实现碱金属挥发与原位焦油形成过程的分隔和组合，结合催化剂吸附碱金属的特性、原位催化焦油转化性能及其结构特征分析，阐明碱金属捕集与焦油原位催化重整过程的相互作用机制。通过系统研究共气化过程中催化剂结构组成变化、吸附与催化性能，揭示催化剂同步吸附碱金属及催化焦油转化机制。本项目的研究对高品质合成气生产及煤与生物质共气化发展瓶颈问题的解决有重要指导意义。

Co-gasification of coal and biomass is an important technology to realize the clean and efficiency utilization of coal and biomass. However, the corrosion of pipeline caused by release of alkali and the pipe blockage caused by condensation of tar seriously limit the further development and industrialization of co-gasification technology. Therefore, in this project, we propose a process to combine capture of alkali salts and in-situ catalytic reforming of tar, and improve the catalytic performance of catalyst by enhancing the interaction between supporter and alkali vapor, realizing the efficient adsorption of alkali vapor and conversion of tar together. The effect of process parameters on co-gasification will be investigated using a system combing the visual fixed bed reactor and laser induced breakdown spectroscopy to obtain the basic role of alkali volatilization and tar yield. A baffled reactor will be designed to isolate or combine the release of alkali and formation of in-situ tar, and the interaction effect between the adsorption process of alkali and in-situ catalytic reforming reaction of tar well be revealed by analyzing the alkali adsorption characteristic, catalytic performance and structure properties of catalyst. Finally, the structure properties and adsorption/catalytic performance of the catalyst during catalytic co-gasification of biomass and coal will be studied to reveal the mechanism on synchronous alkali salts removal and in-situ tar catalytic reforming of catalyst.