Abstract: Sawdust was pyrolyzed in a bench-scale fluidized bed and the mass balance of pyrolysis reaction was calculated. By installing an electrostatic precipitator (ESP) in the end of the fourth condenser，bio-oil yield increased from 54% to 72%，which not only prevented bio-oil from losing together with the produced gas，but also made the gas cleaner. When the pressure of condensers was maintained at a level of 100 Pa，the yield of bio-oil reached the maximum. Energy consumption of the pyrolysis process of sawdust was measured as about 2.01 MJ/kg. The chemical compositions of bio-oil were analyzed and classified with GC/MS and their physical properties were charactered.

摘要： 以木屑为原料，在流化床反应器内发生快速热解反应。对热解实验进行了物料平衡计算；在冷凝器后增加电捕焦油器（ESP），热解油的收率由原来的54%增加到72%，不仅避免了产品热解油的流失，而且净化了热解燃气；调节冷凝器出口压力，维持在100 Pa左右时冷凝效果最好；用电能表对热解过程的能耗进行了检测，分析得出平均每公斤木屑热解耗能约为2.01 MJ；最后对热解油进行了元素分析和物理特性分析，并且运用GC/MS对热解油中的主要组分进行了分析。研究结果为快速热解实验的放大以及热解油的进一步加工和利用提供了参考依据。