催化剂的合理选用是生物质催化热裂解反应的重点和关键，针对煅烧白云石、煅烧石灰石等类型的催化剂存在机械强度低，容易破碎形成粉尘，从而影响床内流动和催化剂的催化效果等不足，提出多孔陶瓷球负载催化剂并以此作为流化床料的方法，保证催化剂能够在高温生物质热裂解气流中承受较强的冲击和长期反复的振动。项目着重研究在不同多孔陶瓷球粒径、气孔率和流化气速下，多孔陶瓷球与生物质粉在流化床内的混合流动和传热传质特性，并建立与生物质热裂解产物分布规律间的理论模型，研究生物质催化热裂解液化产物的调控机理。最后对多孔陶瓷球负载催化剂的积碳规律和老化特性进行研究，以检验所制得的多孔陶瓷球负载催化剂长时间运行的有效性。项目的完成将为生物质催化热裂解液化产物分布的调控机理提供理论和技术支持，对于掌握生物质催化热裂解规律、优化生物质裂解液化工艺、提高生物油的品质具有重要理论指导意义。

The scientific selection of catalysts is a very important and critical issue for the catalytic pyrolysis of biomass. Commercial catalysts such as calcined limestone and calcined dolomite with low mechanical strength are easily broken and formed into fragments, which will degrade the flow and the catalytic performance of catalysts in the fluidized bed. Therefore, the porous ceramic balls supported catalyst is proposed to solve the aforementioned problems. The porous ceramic balls, which have strong structure, can guarantee the catalysts to bear strong burst and long-term vibration in high temperature environments. In this research, the dynamics of mixed-flow and heat transferring of the porous ceramic balls and the biomass powder are studied, while the influences of particle sizes, the porosity of porous ceramic balls and fluidization velocity are taken into account. The analytical model between the above factors with the distribution of pyrolysis products is then established and utilized to study the regulation and control mechanism of the pyrolysis products during the catalytic pyrolysis of biomass. Finally, the behavior of carbon deposition and aging of the porous ceramic balls supported catalyst are investigated, aiming at verifying the effectiveness of the catalyst under a long-term run. The completion of this research will provide a theoretical and technical support to control the product distribution of the catalytic biomass pyrolysis and lay a good foundation to understand the behavior of the catalytic pyrolysis of biomass, optimize the pyrolysis liquefaction process and improve the quality of bio-oil.