催化剂粒径与质量对生物质热解焦油催化裂化反应的影响  

Effects of Catalyst Particle Size and Mass on Catalytic Cracking of Biomass Pyrolysis Tar

作　　者：李永玲[1] 吴占松[2] 

机构地区：[1]北京科技大学机械工程学院,北京100083 [2]清华大学热科学与动力工程教育部重点实验室,北京100084

出　　处：《动力工程学报》2012年第11期859-864,共6页Journal of Chinese Society of Power Engineering

基　　金：中央高校基本科研业务费专项资金资助项目(FRF-MP-11-001B,FRF-AS-10-005B,FRF-TP-12-074A)

摘　　要：针对催化裂化条件对生物质热解焦油处理的影响,以秸秆热解产生的焦油为原料,在固定床焦油催化裂化反应试验台上研究了催化剂作用下焦油催化裂化的过程,并对催化剂粒径和质量等参数对焦油转化效果和催化裂化产物的影响进行了分析.结果表明:减小催化剂的粒径或者增加催化剂质量能促进燃气中高热值大分子气体转化为低热值的小分子轻质气体,从而有效促进焦油裂化,提高燃气产率,降低燃气热值.According to the effects of catalytic cracking conditions on the treatment of biomass pyrolysis tar, the process of tar catalytic cracking under the action of catalyst was studied on the fixed-bed test rig by taking the tar from stalk pyrolysis as the raw material, so as to analyze the influence of catalyst particle size, mass and other parameters on the tar eonversion effect and the catalytic cracking product. Results show that the decrease in catalyst particle size or the increase in catalyst mass can facilitate the conversion of gases from large molecular size with high heating values into small molecular size with low heating values, so that the catalytic craeking of tar is promoted, the gas yield is improved and the gas heating value is reduced.

关 键 词：生物质 热解 焦油 催化裂化 催化剂粒径 催化剂质量 燃气产率 燃气热值 

分 类 号：TK62[动力工程及工程热物理—生物能]