流化床生物质快速裂解制液体燃料

FAST PYROLYSIS OF BIOMASS IN FLUID BED TO PRODUCE LIQUID FUEL

在流化床反应器内进行生物质快速裂解制液体燃料的研究。实验装置包括加热、反应、分离和控制等部分。设计生物质最大处理量为 5kg/h。反应在常压和 4 2 0～ 5 2 5℃的温度范围内进行 ,以木屑为生物质原料 ,以二氧化碳为流化气 ,石英沙为加热介质。在适当的裂解条件下液体产率可达 70 % ,气体和焦的收率均为 15 %左右。研究了反应温度 ,流化气流量。

This paper introduces the fast pyrolysis of biomass to prepare fuel oil. The experimental installation includes a fluid bed reactor and other subsidiary units of heating, separation and control. The designed maximum capacity for this set is 5 kg/h of sawdust as feeding material. The operation was carried out under atmosphere pressure and the temperature range of 420-525°C. Carbon dioxide was used as fluid medium for the quartz sand which acts as heating medium to heat the feeding material. In optimal condition the yield of liquid product reached 70% and gas 15%. In addition, the effects of operation parameters such as reaction temperature, volume flow rate of fluidized gas and feeding rate of solid material on the products yield and gas composition were discussed.