Faculty of Environmental Engineering, University of Seoul, Seoul 130-743, Republic of Korea.
Bioresour Technol. 2010 May;101(10):3672-7. doi: 10.1016/j.biortech.2009.12.078. Epub 2010 Jan 25.
Fast pyrolysis of Miscanthus was investigated in a bench-scale fluidized bed reactor for production of bio-oil. Process conditions were varied for temperature (350-550 degrees C), particle size (0.3-1.3mm), feed rate and gas flow rate. Pyrolysis temperature was the most influential parameter upon the yield and properties of bio-oil. The highest bio-oil yield of 69.2wt.% was observed at a temperature of 450 degrees C which corresponded to the end of the thermal composition of hemicellulose and cellulose. In the bio-oil, the water content was 34.5wt.%, and the main compounds in the organic fraction were phenolics and oxygenates. With increasing temperature, the amount of oxygenates in the bio-oil decreased gradually while that of water and aromatics increased rapidly. The bio-oil yield was not significantly affected by particle sizes or feed rates. The use of product gases as a fluidizing medium aided in increasing bio-oil yield.
采用小型流化床反应器对芒草进行快速热解以生产生物油。研究了不同的工艺条件对生物油产率和性质的影响，包括温度（350-550°C）、颗粒大小（0.3-1.3mm）、进料速率和载气流量。热解温度是对生物油产率和性质影响最大的参数。在 450°C 时，生物油产率最高，为 69.2wt.%，此时半纤维素和纤维素的热解基本结束。生物油中的水分含量为 34.5wt.%，有机组分中的主要化合物为酚类和含氧化合物。随着温度的升高，生物油中含氧化合物的含量逐渐减少，而水分和芳烃的含量迅速增加。颗粒大小和进料速率对生物油产率的影响不显著。使用产物气体作为流化介质有助于提高生物油产率。
